SoftGSM Kit
Model MTSGSM
SoftGSM™ Kit
User Guide
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Contents
Chapter 1 - Introduction and Description
Introduction ....................................................................................................................................................... 6
Preview of this Guide ........................................................................................................................................ 6
Related Documentation ..................................................................................................................................... 7
Technical Specifications .................................................................................................................................... 8
Data Transmission Support ........................................................................................................................ 8
Short Message Service (SMS) Support ...................................................................................................... 8
Commands Supported ................................................................................................................................ 8
GSM Handsets supported .......................................................................................................................... 8
Cables provided .......................................................................................................................................... 8
Operating systems supported ..................................................................................................................... 8
User Interface ............................................................................................................................................. 9
Computers supported ................................................................................................................................. 9
Chapter 2 - Getting Started
Unpacking ....................................................................................................................................................... 12
Requirements .................................................................................................................................................. 12
Setup ............................................................................................................................................................... 13
Connecting the Phone to the Computer.................................................................................................... 13
Chapter 3 - Software Installation
Installing the Software ..................................................................................................................................... 16
Loading your Driver Software .......................................................................................................................... 16
Utility Software ................................................................................................................................................ 19
Phonebook Manager................................................................................................................................. 19
SMS Manager ........................................................................................................................................... 19
Settings ..................................................................................................................................................... 20
Getting Help .............................................................................................................................................. 20
Chapter 4 - SMS and Phonebook Applications
Introduction ..................................................................................................................................................... 22
Short Message Service Utility ......................................................................................................................... 22
Receiving SMS Messages ........................................................................................................................ 22
Sending SMS Messages .......................................................................................................................... 23
Phonebook Utility ............................................................................................................................................ 23
New Phonebook ....................................................................................................................................... 24
New Record .............................................................................................................................................. 24
Delete ....................................................................................................................................................... 24
Read Phonebook ...................................................................................................................................... 25
Write Phonebook ...................................................................................................................................... 25
Settings ........................................................................................................................................................... 26
Chapter 5 - SoftGSM AT Commands, S-Registers and Error Codes
Introduction ..................................................................................................................................................... 30
Standard AT Commands ........................................................................................................................... 30
Fax AT Commands ................................................................................................................................... 34
Extended AT Commands .......................................................................................................................... 35
S-Registers ............................................................................................................................................... 42
Error Codes .............................................................................................................................................. 45
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Chapter 6 - Troubleshooting
Introduction ..................................................................................................................................................... 48
Frequently Asked Questions (FAQs) ............................................................................................................... 48
General FAQs ........................................................................................................................................... 48
Windows 95/98 FAQs ............................................................................................................................... 51
Windows NT FAQs ................................................................................................................................... 51
Troubleshooting Procedures ........................................................................................................................... 52
Chapter 7 - Warranty, Service, and Technical Support
Introduction ..................................................................................................................................................... 54
Software User License Agreement.................................................................................................................. 54
Limited Warranty ............................................................................................................................................. 55
On-line Warranty Registration................................................................................................................... 55
Tech Support ................................................................................................................................................... 55
Recording MultiMobile SoftGSM Information ............................................................................................ 55
Contacting Tech Support via E-mail .......................................................................................................... 56
Service ............................................................................................................................................................ 56
The Multi-Tech BBS ........................................................................................................................................ 56
To log on to the Multi-Tech BBS................................................................................................................ 56
To Download a file..................................................................................................................................... 57
About the Internet............................................................................................................................................ 57
About the Multi-Tech Fax-Back Service .......................................................................................................... 58
Appendices
Appendix A - Understanding GSM................................................................................................................... 60
Introduction ............................................................................................................................................... 60
About GSM Data....................................................................................................................................... 60
For More Information ................................................................................................................................ 65
Glossary
GSM Acronyms......................................................................................................................................... 71
Index
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SoftGSM Kit
Chapter 1 - Introduction and Description
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MultiMobile SoftGSM User Guide
Introduction
Welcome to Multi-Tech’s MultiMobile SoftGSM, model MTSGSM, consisting of a cable and software
(driver and utility applications) which enables digital, cellular, radio communications. The special
Multi-Tech cable provides the connection between a GSM-compatible PC and a GSM-supported
handset. The driver software loads the device drivers providing access to Global System for Mobile
Communications (GSM) services. The utility software provides access to additional services such as
Phonebook Manager and Short Message Service (SMS) Manager.
GSM is a digital cellular radio network used throughout most of the industrial world. It provides
wireless customers with the most advanced digital technology available in the marketplace today.
GSM simplifies data transmission to allow laptop and palmtop computers to be connected to GSM
phones. It provides integrated voice mail, high-speed data, fax, paging and short message services
(SMS) capabilities. With GSM, customers get the advantage of the most secure communications,
unparalleled call privacy, and fraud prevention. In addition, GSM offers the best voice quality of any
digital wireless standard. Independent laboratory and field test reports validate near wireline parity.
Figure 1-1. MultiMobile SoftGSM
MultiMobile SoftGSM is licensed for users of any Multi-Tech mobile product. Multi-Tech’s MultiMobile
SoftGSM kit supports Ericsson, Nokia, and Siemens phones using GSM only (not the Personal
Communications Service that AT&T, Sprint, and others use).
Preview of this Guide
This guide describes the MultiMobile SoftGSM and explains how to install the driver software. The
information contained in each chapter is as follows:
Chapter 1 - Introduction and Description
This chapter describes the MultiMobile SoftGSM, identifies related documentation, and lists the
technical specifications.
Chapter 2 - Getting Started
This chapter provides information on unpacking the contents of your MultiMobile SoftGSM Kit,
defines the computer and software requirements, and describes how to set up (i.e., connect the GSM
phone to your laptop).
Chapter 3 - Software Loading and Configuration
This chapter details the installation of the device drivers.
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Chapter 1 - Introduction and Description
Chapter 4 - SMS and Phonebook Application
This chapter describes the SMS (Short Message Service) and Phonebook applications and how you
can use them to send and receive messages.
Chapter 5 - AT Commands, S-Registers and Error Codes
This chapter describes the commands used to control the operation of your MultiMobile modem.
Chapter 6 - Troubleshooting
This chapter presents a series of FAQs (Frequently Asked Questions) which helps ensure proper
operation of your modem.
Chapter 7 - Service, Warranty and Tech Support
This chapter provides instructions on getting service for your MultiMobile SoftGSM, a statement of
limited warranty, information about our Internet presence, and space for recording information about
your MultiMobile SoftGSM prior to calling Multi-Tech’s Technical Support.
Appendix A - Understanding GSM
Appendix A provides background information on the evolution of GSM.
Glossary
Related Documentation
The complete documentation package for the MultiMobile SoftGSM Kit includes this User Guide and
a printed Quick Start Guide. The Quick Start Guide, shipped with the unit, provides the necessary
information for a qualified person to unpack, cable, and install the software to ensure proper
operation. The following guide is provided on the Manuals diskette that ships with each MultiMobile
SoftGSM Kit, and you can always find the latest version at Multi-Tech’s Web site.
MultiMobile SoftGSM Kit and you will find the following guide listed by title:
•
MultiMobile SoftGSM Kit User Guide
MTSGSM
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MultiMobile SoftGSM User Guide
Technical Specifications
Data Transmission Support
•
•
•
•
•
Non-transparent data mode, uses Radio Link protocol (GSM 04.22)
Transparent data mode (GSM 04.21)
Transmission speed: 300-9600 bps (limited by the GSM Network)
Support for UDI (Unrestricted Digital Information; used for ISDN connections)
Support for V.42bis Data Compression under RLP* (Radio Link Protocol)
Short Message Service (SMS) Support
•
•
•
•
Mobile Terminated (MT)
Mobile Originated (MO)
PDU (Protocol Data Unit) mode
CONCAT (Concatenated) mode - more than 160 characters in a single message
Commands Supported
•
•
AT command set for GSM Mobile Equipment - GSM 07.07
Interface for SMS - GSM 07.05
GSM Handsets supported
•
•
•
Nokia 5110, 5190, 6110, 6150, 6190
Ericsson 318, 388, 628, 688, 768, 788, 788e, 868, 888
Siemens S10
Note: Additional handset support will be added when available.
Cables provided
Multi-Tech provides one of 4 different cables (depending on your handset).
•
•
•
•
MTSGSM-N6100 (for Nokia 5110, 5190, 6110, 6150, and 6190 handsets)
MTSGSM-E388 (for Ericsson 318 and 388 handsets)
MTSGSM-E688 (for Ericsson 628, 688, 768, 788, 788e, 868, and 888 handsets)
MTSGSM-S10 (for Siemens S10 handset)
Operating systems supported
•
•
•
Windows 95
Windows 98
Windows NT
*Not all carriers support V.42bis under RLP. Check with your subscriber service for support
information.
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Chapter 1 - Introduction and Description
User Interface
The MultiMobile SoftGSM Kit disk provides the following software applications (Refer to Chapter 4)
•
•
SMS send/receive application
Phone Book management application
Computers supported
•
•
SoftGSM is "Toshiba Approved" (Toshiba has tested and approved SoftGSM).
All major brands of laptop GSM-compatibles that meet MultiMobile SoftGSM requirements
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MultiMobile SoftGSM User Guide
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SoftGSM Kit
Chapter 2 - Getting Started
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MultiMobile SoftGSM User Guide
Unpacking
The MultiMobile SoftGSM Kit includes two disks (i.e., the software setup disk and the manuals disk
with the MultiMobile SoftGSM Kit User Guide), the appropriate PC-to-phone cable, and a printed
Quick Start Guide.
Four USB V.90 Modems
Quick Start Guide
MADE IN U.S.A
MADE IN U.S.A
Figure 2-1. MultiMobile SoftGSM Kit Contents
Requirements
A host-based GSM node requires the following:
•
•
•
•
PC with minimum 486 processor
At least 8 Mbs RAM
At least 3 Mbs of free hard disk space
Windows 95, Windows 98, or Windows NT
Note: Windows NT users must have Administrator privileges (super user rights) to install
MultiMobile SoftGSM under Windows NT.
IMPORTANT: Cellular phone subscriptions MUST include corresponding services (data, fax and
SMS); otherwise, MultiMobile SoftGSM will not work. Check with your network operator.
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Chapter 2 - Getting Started
Setup
This section describes how to make your MultiMobile SoftGSM operational. For additional
information, refer to the Help files.
Connecting the Phone to the Computer
Making the connection between the phone and the computer is easy with the MultiTech-supplied
cable.
1. Connect the serial cable’s 9-pin connector to the COM port on the laptop.
9-pin Connector
Figure 2-2. Connection to the Computer
2. Plug the serial cable’s phone connector into the phone.
Phone Connector
Figure 2-3. Connection to the Phone
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SoftGSM Kit
Chapter 3 - Software Installation
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MultiMobile SoftGSM User Guide
Installing the Software
MultiMobile SoftGSM software installation consists of installing the applicable device drivers and the
utility software. The procedure which follows does not provide every screen or option.
Loading your Driver Software
1. Ensure that your phone is cabled to the computer (Refer to Chapter 2).
2. Insert the Setup disk into your computer’s disk drive.
3. Click the Windows 95/98 or Windows NT START button.
4. Select the RUN command.
5. In the Run dialog box, click the down arrow and select: A:\SETUP.
Click OK or press ENTER on the keyboard.
6. The Welcome dialog box is displayed.
Click Next >.
7. The SoftGSM License Agreement dialog box is displayed. Read it carefully!
If you don’t agree, click No to stop the installation. Click Yes to continue.
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Chapter 3 - Software Loading and Configuration
8. The User Information dialog box is displayed.
Enter your name and name of company, then click Next >.
9. The Choose Destination Location dialog box is displayed.
Use the default installation destination, or use the browse button to select another destination.
Once you have selected the destination, click Next >.
10. The Select Components dialog box is displayed.
Select the components you want to install and Click Next >.
Note: Users who: (1) do not have messaging services, should not enable the “SMS &
Phonebook Program” option; (2) do not have SMS messaging services can enable the “SMS &
Phonebook Program” to use the “Phonebook” portion only. SMS will not work without the correct
services from your GSM provider.
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MultiMobile SoftGSM User Guide
11. The drivers automatically detect where the phone is installed and display the following screen:
Click Yes.
CAUTION: If the drivers cannot detect where the phone is installed, the install procedure will
display the Select Com Port dialog box at this time. Highlight the appropriate port and click
Next >, and continue with the installation. Once finished, reboot and verify that you can use the
program. If you can’t, refer to the Troubleshooting section (Chapter 6).
12. The Select Program Folder dialog box is displayed.
Select where you want to install the program icons. Click Next >.
13. The Setup Complete dialog box is displayed. Before you can use the program, you must first
reboot the computer.
Remove the disk, check the preferred restart option, and click Finish to complete setup.
receive upcoming information and upgrades.
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Chapter 3 - Software Loading and Configuration
Utility Software
The MultiMobile SoftGSM utility provides SoftGSM Short Message Service (SMS), Phonebook
management, Settings options, and online Help.
Click Start | Programs | SoftGSM | SMS & Phonebook to display the SoftGSM SMS &
Phonebook management dialog box.
Phonebook Manager
The Phonebook tab gives you quick and simple control over all the phone numbers and names in
your personal and cellular phone databases. You can add, change, or move phone numbers and
names more easily using Phonebook Manager than by using the handset controls and LCD display.
In addition, you can build multiple phonebooks.
Note: MultiTech Systems recommends that you always use international phone numbers. That way
you do not have to bother with different country codes when you travel.
Figure 3-1. SoftGSM SMS & Phonebook management (Phonebook)
SMS Manager
The SMS tab allows you to determine the phone number of your local SMS Center and to configure
the application with this number. Remember, before you can send any SMS messages, you need to
know the phone number of your local SMS Center and configure the application with this number. If
you do not have the SMS number, check with your network operator.
This number should be entered as an international number.
Figure 3-2. SoftGSM SMS & Phonebook management (SMS)
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MultiMobile SoftGSM User Guide
Settings
The Settings tab allows you to select your Service Center and identifies the path to your
phonebook.dat file. In addition, it allows you to select the type of outgoing SMS and check whether or
not you want the modem conversation logged.
Figure 3-3. SoftGSM SMS & Phonebook management (Settings)
Getting Help
If you have a problem with the product that is not covered in this guide or the Help files, or if at any
Dealer or Local Distributor.
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SoftGSM Kit
Chapter 4 - SMS and Phonebook Applications
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MultiMobile SoftGSM User Guide
Introduction
With the Short Message Service (SMS) and Phonebook applications you can:
•
•
Send and receive SMS messages up to 160 characters long
Administer the phonebook (i.e., edit, add, delete, and download records) from your own
phone
•
Create and store multiple phonebooks on your PC and download to your phone the one
currently needed.
Short Message Service Utility
The Short Message Service (SMS) utility allows you to send and receive SMS messages. SMS is an
integrated paging service that allows GSM cellular suscribers to receive and send data right on their
cellular phone’s LED display (up to 160 characters). When connected to your laptop, you can receive
urgent e-mail, fax notifications, news and stock quotes, etc, without dialing the phone. You can
receive messages even as you are making a phone call.
Receiving SMS Messages
Receiving an SMS message is very simple. The application detects incoming SMS messages
whenever you are not sending SMS messages or whenever you are reading or writing to the
phonebook.
When an SMS message is received, it is displayed in the New Message dialog box. From there, you
can copy the message and paste it wherever you want. The date and time that the new SMS
message was received is also shown in the dialog box (See Figure 4-1).
Note: SMS uses the European date and time formats. For date, the first two digits represent the year,
the second two digits represent the month, and the last two digits represent the day. For time, the first
two digits represent the hour (military format), the second two digits represent the minutes, and the
last two digits represent the seconds.
Figure 4-1. Receiving an SMS Message
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Chapter 4 - SMS and Phonebook Application
Sending SMS Messages
To send an SMS message, click the SMS tab on the SoftGSM SMS & Phonebook management
dialog box and enter the message, the recipient’s number, and then press the Send SMS button. If
the recipient’s number is an international number, then omit any leading zeros. For example, the
Swedish number 0701234567 should be entered as 46701234567 if it is to be interpreted as an
international number.
Figure 4-2. Sending an SMS Message
On the Settings tab, you can select the type of coding to be used when sending an SMS message.
The 7-bit coding scheme should work for most transmissions.
Phonebook Utility
Phone numbers can be stored in either the memory of the phone or the SIM (Subscriber Information
Module) card in your GSM phone. To simplify the handling of all the numbers, you can use the
phonebook functionality of MultiMobile SoftGSM. You can work with multiple phonebooks, editing,
adding and deleting records and then upload the updated phonebooks to the preferred storage in the
phone (memory or SIM). You can also download your current phonebook from the phone and store
or edit it on your PC.
Each phonebook record contains:
•
•
•
Name: used to store a descriptive text for the record
Phonenumber: contains the phone number
International: used to indicate if the phone number is an international number
(i.e., it contains a country code) or is a national number
To edit the properties of a phonebook or a record, click on its name in the tree presentation, then edit
its properties to the right.
The Phonebook functions include:
•
•
•
•
•
New record
New phonebook
Read phonebook (from phone)
Write phonebook (to phone)
Delete (record or phonebook)
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MultiMobile SoftGSM User Guide
New Phonebook
From the SoftGSM SMS & Phonebook management dialog box, Phonebook tab, click New
phonebook to create a new, empty phonebook. You can set the name of the phonebook in the
‘Name’ field on the upper right (See Figure 4-3).
Figure 4-3. Creating a New Phone Book
New Record
From the SoftGSM SMS & Phonebook management dialog box, Phonebook tab, click New
record to create a new entry in the phonebook. You are automatically positioned at this record so
you can edit its properties. The record is created in the phonebook that currently has the focus. You
set focus to a phonebook by clicking on the phonebook or on a record contained in the phonebook
(See Figure 4-4).
Figure 4-4. Creating a New Record
Delete
From the SoftGSM SMS & Phonebook management dialog box, Phonebook tab, highlight the tree
item you want to delete (either a record or a phonebook), then click Delete. If you are trying to delete
a phonebook, you will be asked to confirm the deletion. The deleted item is only deleted from the
computer and not from the phone. To delete something from the phone, use the ‘Write phonebook’
function to write the updated phonebook (with records deleted) to the phone (See Figure 4-4).
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Chapter 4 - SMS and Phonebook Application
Read Phonebook
From the SoftGSM SMS & Phonebook management dialog box, Phonebook tab, click Read
phonebook to display the Read phonebook dialog box for reading a phonebook from the phone.
Figure 4-5. Read Phonebook Screen
1. Click the down arrow and select the phonebook to be read. The default choice (named ‘New
phonebook’) stores the result as a new phonebook labeled ‘New phonebook’.
2. Select the storage location from which you wish to read. The available choices are the Phone
memory or the SIM-card.
3. If you selected an existing phonebook to store the result, then select how you wish to store it. You
can either choose to Overwrite (which overwrites all records currently in your phonebook) or to
Append the result to the end of your phonebook.
Write Phonebook
From the SoftGSM SMS & Phonebook management dialog box, Phonebook tab, click Write
phonebook to display the dialog box for writing a phonebook to the phone.
Figure 4-6. Write Phonebook Screen
1. Click the down arrow and select which phonebook you want to store in the phone.
2. Select which storage method you would like the phonebook to be stored. The available choices
are Phone memory or SIM-card.
Note: The number of available slots varies from phone model to phone model and from SIM card to
SIM card. If your phonebook contains more records than the number of available slots, then some
records will not be written to the phone.
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MultiMobile SoftGSM User Guide
Settings
The Settings tab on the SoftGSM SMS & Phonebook management dialog box displays your
Service Center, paths to your Phonebook files, type of outgoing SMS, and Log mode conversation
information.
Figure 4-7. SoftGSM Settings Screen
Service Center
From the SoftGSM SMS & Phonebook management dialog box, Settings tab, click the Service
Center button (to the right of the Service Center and International fields) to see a list of GSM
operators with their Service Centers and phone numbers. Select the Service Center that matches
your GSM subscription (See Figure 4-8 for examples).
Figure 4-8. Service Center Screen
If your operator is not listed or the number listed is incorrect, select the existing number and replace it
by typing the number of your Service Center as an international number in the Service Center
window.
Note: The number that you have stored in your GSM phone is not used by the MultiMobile SoftGSM
modem. If you are unsure which number to use, contact your GSM operator.
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Chapter 4 - SMS and Phonebook Application
Phonebook File
The phonebook file on your computer contains all the data for your phonebooks and phone numbers.
From the SoftGSM SMS & Phonebook management dialog box, Settings tab, click the button to
the right of the Phonebook file window to display the Phonebook file dialog box. Select the file you
would like to use.
Figure 4-9. Sample Phonebook File
The default file is called ‘phonebook.dat’ and resides in the same directory as the MultiMobile
SoftGSM application file.
Type of Outgoing SMS
From the SoftGSM SMS & Phonebook management dialog box, Settings tab, select the “Type of
outgoing SMS.” This sets the type of coding scheme to be used for outgoing SMS messages. The 7-
bit standard option should work with most GSM phones.
Com Port Attached to the Phone
From the SoftGSM SMS & Phonebook management dialog box, Settings tab, click the button to
the right of the COM2 field to display the Select COM port dialog box. Click the down arrow to until
you find the appropriate COM port and then click OK.
Figure 4-10. Select COM Port
Note: COM port 1 is the default.
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MultiMobile SoftGSM User Guide
Log Modemconversation
From the SoftGSM SMS & Phonebook management dialog box, Settings tab, if the”Log
Modemconversation” option is enabled, all communication between the application and the
MultiMobile SoftGSM modem will be logged to a file called ‘log.txt.’
The log.txt file contents can be used to help pinpoint any operational problems that may occur.
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SoftGSM Kit
Chapter 5 - SoftGSM AT Commands,
S-Registers and Error Codes
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MultiMobile SoftGSM User Guide
Introduction
This chapter describes all of the AT commands, S-Registers and Result Codes supported by
MultiMobile SoftGSM. This information is also available at the MultiMobile SoftGSM website at http://
International Modem Restrictions
Some dialing and answering defaults and restrictions may vary for international modems. Changing
settings may cause a modem to become non-compliant with national telecom requirements in
specific countries. Also note that some software packages may have features or lack restrictions that
may cause the modem to become non-compliant.
Standard AT Commands
AT
Attention
Syntax
Description
AT
Used to see if modem is responding. Just returns OK.
A
Answer incoming call
ATA
Syntax
Description
The ATA command is used to make the modem answer an incoming call. If there is
no incoming call, the command will return OK and do nothing.
D
Dial number
Syntax
Description
ATDn where n is the number to be dialed.
The ATD command is used to make an outgoing call. The number specified is dialed
and the modem tries to establish a connection. For a GSM-call the area code must
always be included in the number to be dialed.
DTn
Dial number (tone dialing)
Syntax
Description
ATDTn where n is the number to be tone dialed.
The ATDT command is used to make an outgoing call. The number specified is tone
dialed and the modem tries to establish a connection. For a GSM-call, the area code
must always be included in the number to be dialed.
DPn
Dial number (pulse dialing)
Syntax
ATDPn where n is the number to be tone dialed.
Description
The ATDP command is used to make an outgoing call. The number specified is pulse
dialed and the modem tries to establish a connection. For a GSM-call, the area code
must always be included in the number to be dialed.
H
Hang up
Syntax
Description
ATH
The ATH command hangs up an ongoing call.
ATI
Identify Modem
Syntax
Description
ATIn where n is as follows
The ATI command is used to show information about the modem
ATI0
Displays modem Manufacturer, Product name
ATI2
ATI3
Displays coderevision of modem software
Displays coderevision of modem software
ATI9
Displays modem Manufacturer, Product name
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Chapter 5 - AT Commands, S-Registers, and Error Codes
ATS
Access an S-register
Syntax
ATSn=s where n is the S-register to be accessed and s is the value to be set or a ?
to read the register value.
Description
The ATS command is used to read and write the values of the S-registers.
ATSn=sWrite the value s to S-register number n.
ATSn=?Read and display the number stored in S-register number n.
ATZ
Reset modem
ATZ
Syntax
Description
The ATZ command resets the modem. The default settings are restored. The Z
command is equivalent of restarting the modem.
A/
Execute previous command again
A/
Syntax
Description
Execute previous command again. This command reexecutes the last command that
was executed by the modem. This command shall not be followed by a carriage
return.
&F
Load factory settings
AT&F
Syntax
Description
The AT&F command restores the factory (default) settings of the modem. This
includes restoring all the S-registers to their default settings.
&J
Telephone jack selection
AT&J
Syntax
Description
The AT&J command has no meaning and is implemented only for compatibility
reasons.
&K
Select flow control
AT&K
Syntax
Description
The AT&K command has no meaning and is implemented only for compatibility
reasons.
\N
Select error control
Syntax
Description
AT\Nn where n is as follows
The AT\N command is used to select the mode of error control.
AT\N0 Transparent mode, no error correction
AT\N1 Transparent mode, no error correction
AT\N2 Non-transparent mode ie RLP (Radio Link Protocol)
AT\N3 Non-transparent mode ie RLP (Radio Link Protocol)
AT\N4 Non-transparent mode ie RLP (Radio Link Protocol)
AT\N5 Non-transparent mode ie RLP (Radio Link Protocol)
E
Command echo
Syntax
Description
ATEn where n is as follows.
The ATE command enables or disables the echo of characters to the DTE. This
value is stored in S-register 14 bit 1.
ATE0 Disable command echo
ATE1 Enable command echo. This is the default.
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V
Result code format
Syntax
Description
ATVn where n is as follows.
The ATV command selects in which format the result codes from the modem are
displayed. This value is stored in S-register 14 bit 3.
ATV0 Result codes are displayed in short form (numeric).
ATV1 Result codes are displayed in long form (text). This is the default.
Q
Result code responses
Syntax
Description
ATQn where n is as follows.
The ATQ command enables or disables the sending of result codes to the DTE.
This value is stored in S-register 14 bit 2.
ATQ0 Result codes are returned to the DTE. This is the default
ATQ1 Result codes are not returned to the DTE.
W
Error correction and speed reporting
ATWn where n is as follows.
Syntax
Description
The ATW command controls which speed and error correction messages are
returned by the modem CONNECT message. The setting of S95 overrides this
command. This value is stored in S-register 31 bit 2 and 3.
ATW0 The CONNECT message shows the DTE speed.
ATW1 The CONNECT message shows line speed, error correction protocol and
DTE speed in that order.
ATW2 The CONNECT message shows the line speed.
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X
Extended result codes
Syntax
Description
ATXn where n is as follows. Valid values of n is 0,1,2,3 and 4.
The ATX command controls the result codes from the modem. In the table below an *
indicates that the normal response is used and a number indicates what response
will be used instead of the normal response. This value is stored in S-register 22 bit 4
to 6.
Result Code
X0
*
X1
*
X2
*
X3
*
X4
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
0
OK
1
CONNECT
*
*
*
*
2
RING
*
*
*
*
3
NO CARRIER
*
*
*
*
4
ERROR
*
*
*
*
5
CONNECT 1200
NO DIAL TONE
BUSY
1.
3.
3.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
1.
4
*
*
*
6
3.
3.
*
*
3.
*
7
3.
*
8
NO ANSWER
*
9
CONNECT 600
CONNECT 2400
CONNECT 4800
CONNECT 9600
CONNECT 7200
CONNECT 12000
CONNECT 14400
CONNECT 19200
CONNECT 38400
CONNECT 57600
CONNECT 1200TX/75RX
CONNECT 75TX/1200RX
DELAYED
*
*
*
10
11
12
13
14
15
16
17
18
22
23
24
32
33
34
35
40
44
45
46
47
48
49
50
51
52
66
67
69
76
77
80
81
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
4
4
4
4
4
4
BLACKLISTED
FAX
4
+FCERROR
DATA
CARRIER 300
*
CARRIER 1200/75
CARRIER 75/1200
CARRIER 1200
CARRIER 2400
CARRIER 4800
CARRIER 7200
CARRIER 9600
CARRIER 12000
CARRIER 14400
COMPRESSION: CLASS 5
COMPRESSION: V.24bis
COMPRESSION: NONE
PROTOCOL:NONE
PROTOCOL:LAPM
PROTOCOL:ALT
PROTOCOL:ALT-CELLULAR
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
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&R
RTS/CTS options
Syntax
Description
AT&Rn where n is as follows.
The AT&R command controls how the modem will handle CTS in synchronous mode.
This value is stored in S-register 21 bit 2.
AT&R0 CTS follows RTS when the modem is in data mode.
AT&R1 RTS is ignored. CTS is on. This is the default.
&C
Data carrier detect (DCD) options
AT&Cn where n is as follows.
Syntax
Description
The AT&C command specifies carrier detect (DCD) handling. This value is stored in
S-register 21 bit 5.
AT&C0 DCD is always on.
AT&C1 DCD follows the state of carrier (default).
&S
DSR options
Syntax
Description
AT&Sn where n is as follows.
The AT&S command specifies carrier detect (DCD) handling. This value is stored in
S-register 21 bit 6.
AT&S0 DSR is always on. This is the default.
AT&S1 DSR will become active at start of handshaking. DSR will become inactive
when carrier has been lost.
&D
DTR options
Syntax
Description
AT&Dn where n is as follows.
The AT&D command specifies the response to the DTR from the DTE.
AT&D0 Modem ignores DTR.
AT&D2 Modem disconnects and returns OK on loss of DTR (default).
Fax AT Commands
AT+F
Fax commands
MultiMobile SoftGSM supports all Class 1 Fax commands.
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Extended AT Commands
+CBC
Battery charge
Syntax
AT+CBC for battery charge
The response is +CBC: <bcs>,<bcl>
AT+CBC=? for a list of supported values.
The response is +CBC: (list of supported <bcs>),( list of supported <bcl>)
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CBC command returns the battery connection status and the battery charge
level.
Defined values Meaning
<bcs>
0
Phone is powered by the battery
1
Phone has a battery connected, but is not powered by it
Phone does not have battery connected
2
3
Recognized power fault, calls inhibited
<bcl>
0
Battery is exhausted or phone does not have a battery connected
Battery has 1-100 percent of capacity remaining
1.100
+CGMI
Request manufacturer identification
Syntax
AT+CGMI used to get phone manufacturer.
The response is +CGMI: <manufacturer>
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CGMI command returns one ore more lines of information text determined
by the phone manufacturer.
Defined values Meaning
<manufacturer>Information text determined by the phone manufacturer
+CBST
Select bearer service type
Syntax
AT+CBST=[<speed>[,<name>[,<ce>]]] used to set bearer service.
AT+CBST? returns selected bearer service
The response is +CBST: <speed>[,<name>,<ce>]
AT+CBST=? for a list of supported bearer service types.
The response is +CBST: (list of supported <speed>), (list of supported<name>),
(list of supported <ce>)
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CBST command sets the bearer service <name> with data rate <speed>
and the connection element <ce> to be used when data calls are originated.
Defined values Meaning
<speed>
7
9600 bps (V.32)
71
9600 bps (V.110)
<name>
0
Asynchronous modem
<ce>
0
1
Transparent
Non-transparent (RLP)
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+CMGF
Message format
Syntax
AT+CMGF=<mode> used to set the message format.
AT+CMGF? returns selected message format. The response is +CMGF: <mode> .
AT+CMGF=? for a list of supported <mode>. The response is +CMGF: (list of
supported <mode>) .
Description
The AT+CMGF command selects the message format to use.
Defined values Meaning
<mode>
0
PDU mode
+CGMM
Request model identification
Syntax
AT+CGMM used to get phone model info.
The response is +CGMM: <model>
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CGMM command returns one ore more lines of information text determined
by the phone manufacturer intended to identify the specific model of the phone..
Defined values Meaning
<model>
Information text determined by the phone manufacturer
+CMGD
Delete message
Syntax
AT+CMGD=<index> used to set the message format
Error codes is returned as +CMS ERROR: <err>:
Description
The AT+CMGD command deletes message with location <index> from preferred
message storage.
Defined values Meaning
<index>
Location of message to be deleted.
+CMEE
Report mobile equipment error
Syntax
AT+CMEE=<n> used to set use of result codes.
AT+CMEE? Returns <n>. The response is +CMEE: <n> .
Enter AT+CMEE=? for a list of supported modes. The response is +CMEE: (list of
supported <n>)
Description
The AT+CMEE command disables or enables the use of the result code
+CME ERROR: <err> as an indication of an error relating to the functionality of the
phone. When enabled, phone related errors cause the +CME ERROR:<err> final
result code instead of the regular ERROR final result code. ERROR is returned
normally when the error is related to syntax, invalid parameters, or TA functionality.
Test command returns values supported by the TA as a compound value.
Defined values Meaning
<n>
0
1
Disables +CME ERROR: <err> and use ERROR instead
Enables +CME ERROR: <err> and use numeric <err> values as defined in
+CME ERROR <err>
+CGMR
Read message
Syntax
AT+CMGR=<index> used to read a message
The response is +CMGR: <stat>,<length><CR><LF><pdu>
Error codes is returned as +CMS ERROR: <err>:
The AT+CMGR command reads a message with location value <index> from
Description
preferred message storage <mem1> to the TE. Status of the message and the entire
message data unit <pdu> is returned.
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Defined values Meaning
<index>
Location value of message to be read
+CMGL
List messages
Syntax
AT+CMGL[=<stat>| used to list messages
The response is +CMGL: <index>,<stat>,<length>,<CR><LF><pdu>
AT+CMGL=? for a list of supported <stat>.
The response is +CMGL: (list of supported <stat>)
Error codes is returned as +CMS ERROR: <err>:
Description
The AT+CMGL command list messages from the preferred message storage. Entire
data units (PDU) is returned.
Defined values Meaning
<stat>
4
All messages
+CGSN
Request product serial number identification
Syntax
AT+CGSN used to get phone serial number info. The response is +CGSN: <sn> .
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CGSN command returns one ore more lines of information text determined
by the phone manufacturer intended to identify the individual phone..
Defined values Meaning
<sn>
Information text determined by the phone manufacturer.
+CHUP
Hangup call
Syntax
AT+CHUP used hangup GSM call
The AT+CHUP command causes hangup of the current GSM call.
Description
+CMGR
Read message
Syntax
AT+CMGR=<index> used to read a message
The response is +CMGR: <stat>,<length><CR><LF><pdu>
Error codes is returned as +CMS ERROR: <err>:
Description
The AT+CMGR command reads a message with location value <index> from
preferred message storage <mem1> to the TE. Status of the message and the entire
message data unit <pdu> is returned.
Defined values Meaning
<index>
Location value of message to be read
+CMGS
Send message
Syntax
AT+CMGS=<length><CR>PDU is given<ctrl-z>/ESC> used to send messages
Error codes is returned as +CMS ERROR: <err>:
Description
The AT+CMGS command sends a message to the network (SMS-SUBMIT).
Message reference value <mr> is returned to the TE on successful message
delivery. The TA shall send a four character sequence <CR><LF><greater_than>
<space> (in hex 0xd 0xa 0x3e 0x20) after the command line is terminated with
<CR>; after that PDU can be given. <ctrl-z> (in hex 0x1a) must be used to indicate
the ending of PDU
Defined values Meaning
<length> Must indicate the number of octets coded in the TP layer data unit to be given.
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+CNMI
New message indications to modem
Syntax
AT+CNMI=[<mode>[,<mt>[,<bm>[,<ds>[,<bfr>]]]]] set the new message indications.
AT+CNMI? Returns the new message indications settings.
The response is +CNMI: <mode>,<mt>,<bm>,<ds>,<bfr> .
Use AT+CNMI=? for a list of supported settings
The response is +CNMI: (list of supported <mode>), ( list of supported<mt>), ( list of
supported <bm>), ( list of supported <ds>), ( list of supported<bfr>). Error codes are
returned as +CMS ERROR: <err>:
Description
The AT+CNMI command sets how receiving of new messages from the network is
indicated to modem when the modem is active.
Defined values Meaning
<mode>
1
Discard indication and reject new received message unsolicited result codes, when
the TA-TE link is reserved.
2
Buffer unsolicited result codes in the TA when TA-TE link is reserved and flush them
to the TE after reservation, otherwise forward them directly to the TE.
<mt>
0
1
No SMS-DELIVER indications are routed to the TE.
Indication of SMS-DELIVER is routed to the TE using an unsolicited result code:
+CMTI: <mem>,<index> <bm>
0
1
No CBM indications are routed to the TE.
Indication of CBM is routed to the TE using an unsolicited result code: +CBMI:
<mem>,<index>
<ds>
0
No SMS-STATUS-REPORTs are routed to the TE.
<bfr>
0
TA buffer of an unsolicited result codes defined within this command is flushed to the
TE when <mode> 1,2 is entered. TA buffer is not implemented.
+CPAS
hone activity status
Syntax
AT+CPAS for status.
AT+CPAS=? for a list of supported values.
Description
The AT+CPAS command returns the activity status of the phone. It can be used to
check the phone before requesting action from the phone.
Possbile responses
+CPAS: 0
Meaning
Ready (phone allows commands from modem)
+CPAS: 1
Unavailable (phone does not allows commands from modem)
+CPAS: 2
Unknown
Ringing
+CPAS: 3
+CPAS: 4
Call in progress
Asleep
+CPAS: 5
+CPBR
Read phonebook entries
AT+CPBR=<index1>,<index2>
Syntax
The response is +CPBR: <index>,<number>,<type>,<text>
AT+CPBR=? for a list of supported <index>.
The response is +CPBR: (list of supported <index>), <nlength>,<tlength>
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CPBR command reads phonebook entries in location number range
<index1>…<index2> from the current phonebook memory storage selected with
AT+CPBS . If <index2> is left out only one location <index1> is returned.
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Defined values Meaning
<indexn>
<number>
<type>
Index number, location in storage
Phone number of type <type>
Type of address
<text>
String of maximum length <tlength>
Maximum length of <number>
Maximum length of <text>
<nlength>
<tlength>
+CPBW
Write phonebook entry
Syntax
AT+CPBW=<index>,<number>,<type>,<text>
AT+CPBW=? for a list of supported <index>.
The response is +CPBW: (list of supported <index>), <nlength>,(list of supported
<type>), <tlength>
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CPBW command writes a phonebook entry in the current phonebook
memory storage selected with AT+CPBS Entry fields written are phone number
<number> and text <text> associated with the number. If those fields are omitted.
The phonebook entry is deleted.
Defined values Meaning
<index>
<number>
<type>
Index number, location in storage
Phone number of type <type>
Type of address, default 145 when dialing string includes international access code
character ‘+’, otherwise 129.
<text>
String of maximum length <tlength>
Maximum length of <number>
Maximum length of <text>
<nlength>
<tlength>
+CPBS
Phonebook memory storage
Syntax
AT+CPBS=<storage> to set phonebook memory storage. AT+CPBS? returns
selected storage.
The response is +CPBS: <storage>. Enter AT+CPBS=? for a list of supported
<storage>.
The response is +CPBS: (list of supported <storage>)
Error code is returned as +CME ERROR: <err>:
Description
The AT+CPBS command selects or test which storage is used for phonebook
commands.
Defined values Meaning
<storage>
“ME”
Phone memory
“SE”
SIM memory
+CPMS
Preferred message storage
Syntax
AT+CPMS=<mem1> [, <mem2>] . The response is +CPMS: <used1>,<total1>,
<used2>,<total2>
AT+CPMS? returns selected message storage
The response is +CPMS: <mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>
AT+CPMS=? for a list of supported <mem>.
The response is +CPMS: (list of supported <mem1>), ( list of supported <mem2>)
Error code is returned as +CMS ERROR: <err>:
Description
The AT+CPMS command selects the memory storages <mem1> and <mem2> to be
used for reading, writing etc.
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Defined values Meaning
<mem1>
<mem2>
“SM”
SIM message storage
“ME”
Phone message storage
<used1>
<used2>
<total1>
<total2>
Total number of messages currently in <mem1>
Total number of messages currently in <mem2>
Total number of message locations in <mem1>
Total number of message locations in <mem2>
+CSCA
Service centre address
Syntax
AT+CSCA=<sca> [,<tosca>] .
AT+CSCA? returns selected service centre address. The response is +CSCA:
<sca>,<tosca> .
Error codes is returned as +CMS ERROR: <err>:
Description
The AT+CSCA command selects the service centre address through which
messages are transmitted.
Defined values Meaning
<sca>
Service Centre Address in string format
<tosca>
Type of Service Centre Address octet in integer format
+CR
Service reporting control
Syntax
AT+CR=<mode> used to set reporting.
AT+CR? Returns <mode>
The response is +CR: <mode>
AT+CR=? for a list of supported modes
The response is +CR: (list of supported <mode>)
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CR command controls whether or not intermediate result code +CR:<serv>
is returned from the modem to the computer. If enabled, the intermediate result code
is transmitted at the point during the connect negotiation during which the modem
has determined the speed and quality of service to be used, before any error control
or data compression reports are transmitted, and before any final result code (e.g.,
CONNECT) is transmitted.
Defined values Meaning
<mode>
0
1
Disables reporting
Enables reporting
+CRC
Cellular result codes
Syntax
AT+CRC=<mode> used to set cellular result codes.
AT+CRC? Returns <mode>. The response is +CRC: <mode>.
Enter AT+CRC=? for a list of supported modes. The response is +CRC: (list of
supported <mode>).
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CR command controls whether or not the extended format incoming call
indication is used. When enabled, an incoming call is indicated to the TE with the
unsolicited result code +CRING: <type> instead of the normal RING.
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Defined values Meaning
<mode>
0
1
Disables extended format
Enables extended format
Radio link protocol
+CRLP
Syntax
AT+CRLP=[<iws>[,mws>[,<T1>[,<N2>]]]] used to set radio link protocol parameters.
AT+CRLP? returns radio link protocol parameters. The response is +CRLP:
<iws>,<mws>,<T1>,<N2>.
AT+CRLP=? for a list of supported radio link protocol parameters The response is
+CRLP: (list of supported <iws>), (list of supported <mws>), (list of supported <T1>),
(list of supported <N2>)
Error codes is returned as +CME ERROR: <err>:
Description
The AT+CRLP command sets the radio link protocol parameters.
Defined values Meaning
<iws>
61
<mws>
IWF to MS window size
61
MS to IWF window size
Acknowledgment timer
<T1>
1.100
<N2>
0-10
Retransmisson attempts
+CSMS
Select message service
Syntax
AT+CSMS=<service> to select messaging service. The response is +CSMS:
<mt>,<mo>,<bm>
AT+CSMS? returns the selected messaging service. The response is +CSMS:
<service>,<mt>,<mo>,<bm>
AT+CSMS=? for a list of supported <service>. The response is +CSMS: (list of
supported <service>)
Error code is returned as +CMS ERROR: <err>:
The AT+CSMS command selects the messaging service:
AT+CSMS=<mt> for mobile terminated
Description
AT+CSMS=<mo> for mobile originated
AT+CSMS=<bm> for broadcast type messages.
Defined values Meaning
<service>
0
GSM 03.40 and 03.41
1-127
128
Reserved
Manufacturer specific
<mt> <mo> <bm>
0
1
Type not supported
Type supported
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+CSQ
Signal quality
Syntax
AT+CSQ for signal strength
The response is +CSQ: <rssi>,<ber>
AT+CSQ=? for a list of supported values.
The response is +CSQ: (list of supported <rssi>),( list of supported <ber>)
Error codes is returned as +CME ERROR: <err>:
The AT+CSQ command returns the signal strength and bit error rate.
Description
Defined values Meaning
<rssi>
0
-113 dBm or less
1
-111 dBm
2.30
31
-109 to –53 dBm
-51 dBm or greater
Not known or not detectable
99
<ber>
0-7
99
As RXQUAL………….
Not known or not detectable
S-Registers
S0
Auto answer ring count
Description
Defines the number of rings on an incoming call before the modem tries to answer
the call.
Values
0
Meaning
The modem is not answering any incoming calls. This is the default value
The modem is in autoanswer mode and answer the call of the specified number of
1.255
rings.
S1
Ring counter
Description
Returns the current ring count. This register counts the incoming ring signals.
S2
Escape character
Description
Value
Defines what ASCII character is used for the escape sequence (‘+++’).
Meaning
0-255
The ASCII value used for the escape sequence. The default value is 43 which
corresponds to an ASCII ‘+’.
S3
Carriage return character
Description
Value
Defines what ASCII character is used for carriage return (end-of-line).
Meaning
0-255
The ASCII value used for the carriage return character. The default value is 13 which
corresponds to an ASCII <CR>.
S4
Line feed character
Description
Value
Defines what ASCII character is used for linefeed.
Meaning
0-255
The ASCII value used for the linefeed character. The default value is 10 which
corresponds to an ASCII <LF>.
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S5
Backspace character
Description
Value
Defines what ASCII character is used for backspace.
Meaning
0-255
The ASCII value used for the backspace character. The default value is 8 which
corresponds to an ASCII <BS>.
S7
No Carrier timeout
Description
Value
S7 specifies the time to wait for carrier before hanging up and return NO CARRIER.
Meaning
0-255
The time to wait for carrier in seconds. The default value is 60. A value of 0 disables
checking for carrier.
S10
Lost carrier disconnect time
Description
S10 specifies the time in tenths of a second before the modem hangs up in the case
of lost carrier.
Value
0-255
Meaning
The time to wait before a loss of carrier causes the modem to hang ups. The default
value is 10 (1 second).
A value of 0 disables the checking for lost carrier.
S12
Escape sequence guard time
Description
S12 specifies the maximum time in fiftieths of a second that can elapse between the
individual characters in the escape sequence to consider it valid.
Value
0-255
Meaning
Maximum time between escape characters. The default value is 50 (1 second).
A value of 0 disables the guard time detection.
S14
Configuration bitmap
Description
S14 is a bitmapped register that controls a wide range of modem properties:
Bit
0
Default
Meaning
N.A.
1
Not used
1
Command echo.
A value of 0 means that echo disabled and corresponds to ATE0 .
A value of 1 means that echo enabled and corresponds to ATE1 .
2
3
0
1
Quiet mode.
A value of 0 means that the modem sends result codes and corresponds to
ATQ0.
A value of 1 means that the modem do not send result codes and
corresponds to ATQ1 .
Result codes.
A value of 0 means that the modem sends numeric result codes and
corresponds to ATV0 .
A value of 1 means that the modem sends text responses and corresponds
tO ATV1 .
4
5
6
7
N.A.
N.A.
N.A.
0
Not used
Not used
Not used
Answer/Originate.
A value of 0 means answer mode and a value of 1 means originate mode.
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S21
Configuration bitmap
Description
S21 is a bitmapped register and controls a wide range of modem properties.
Bit
0
Default
Meaning
0
Not used, implemented for compatibility reasons. Corresponds to AT&J.
Not used
1
N.A.
1
2
RTS/CTS behavior.
A value of 0 means CTS always on and corresponds to AT&R0.
A value of 1 means that CTS tracks RTS and corresponds to AT&R1 .
Result codes behavior.
3, 4
2
A value of 0 means that the modem ignores DTR and corresponds to
AT&D0.
A value of 2 means that the modem disconnects and returns OK on loss of
DTR and corresponds to AT&D2 .
5
6
1
DCD behavior.
A value of 0 means that DCD is always active and corresponds to AT&C0.
A value of 1 means that DCD reflects true carrier status and corresponds to
AT&C1.
0
DSR behavior.
A value of 0 means that DSR is always active and corresponds to AT&S0 .
A value of 1 means that DSR is active when handshake begins and
corresponds to AT&S1 .
7
N.A.
Not used
S22
Configuration bitmap
Description
S22 is a bitmapped register and controls a wide range of modem properties.
Bit
Default
Meaning
0
N.A.
N.A.
N.A.
N.A.
7
Not used
1
Not used
2
Not used
3
Not used
4.5,6
Limit result codes.
A value of 0 corresponds to ATX0
A value of 4 corresponds to ATX1
A value of 5 corresponds to ATX2
A value of 6 corresponds to ATX3
A value of 7 corresponds to ATX4 (default)
(See ATX description of these settings.)
Not used
7
N.A.
S30
Inactivity timer
Description
S30 specifies the maximum time that a data connection will be maintained if no data
transfer occurs. The value is in tens of seconds.
Value
0
Meaning
The inactivity timeout is disabled. This is the default value.
The maximum time to maintain a connection without any data transfer.
1-255
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Chapter 5 - AT Commands, S-Registers, and Error Codes
S31
Configuration bitmap
Description
S31 is a bitmapped register and controls a wide range of modem properties.
Bit
0
Default
Meaning
N.A.
N.A.
2
Not used
1
Not used
2, 3
Error correction progress messages control.
A value of 0 means that only DTE speed is shown and corresponds to
ATW0 (default).
A value of 1 means full reporting and corresponds to ATW1
A value of 2 means that only DCE speed is shown and corresponds to ATW2
4
5
6
7
N.A.
N.A.
N.A.
N.A.
Not used
Not used
Not used
Not used
S95
Negotiation message options
Description:
S95 is a bitmapped register and enables variants of the CONNECT result code from
the modem. The settings in this S-register override the ATW command.
Bit
0
Default
Meaning
1
Link speed reporting.
ARQ reporting.
1
1
2
1
CARRIER reporting.
PROTOCOL reporting.
Not used
3
1
4
N.A.
1
5
COMPRESSION reporting.
Enable all result codes. Just like ATX4 .
Not used
6
1
7
N.A.
Error Codes
+CME ERROR Mobile equipment error
Description:
This is the error code for +CME ERROR:
Meaning
Error code
0
Phone failure
1
No connection to phone
Phone adaptor link reserved
Operation not allowed
Operation not supported
PH-SIM PIN required
SIM not inserted
SIM PIN required
SIM PUK required
SIM failure
2
3
4
5
10
11
12
13
14
15
16
20
21
22
SIM busy
SIM wrong
Incorrect password
Memory full
Invalid index
Not found
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23
24
25
26
27
30
31
100
Memory failure
Text string too long
Invalid characters in text string
Dial string too long
Invalid characters in dial string
No network service
Network timeout
Unknown
+CMS ERROR Message service error
Description:
Error code
0-127
128-255
300
This is the error codes for +CMS ERROR.
Meaning
GSM 04.11 Annex E-2 values
GSM 03.40 section 9.2.3.22 values
Phone failure
301
SMS service of phone reserved
Operation not allowed
Operation not supported
Invalid PDU mode parameter
Invalid text mode parameter
SIM not inserted
302
303
304
305
310
311
SIM PIN necessary
PH-SIM PIN necessary
SIM failure
312
313
314
SIM busy
315
SIM wrong
320
Memory failure
321
Invalid memory index
Memory full
322
330
SMSC (message service center) address unknown
No network service
331
332
Network timeout
500
Unknown error
512
Manufacturer specific error
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SoftGSM Kit
Chapter 6 - Troubleshooting
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MultiMobile SoftGSM User Guide
Introduction
This chapter provides both general and specific tools for helping you solve operational problems with
your MultiMobile SoftGSM. The Frequently Asked Questions (FAQs) are provided as a general
problem solving tool; some more specific troubleshooting suggestions are then provided. The FAQs
are categorized below as:
•
•
•
General FAQs
Windows 95 FAQs
Windows NT FAQs
Frequently Asked Questions (FAQs)
General FAQs
Q1. What is GSM ?
A1. GSM (Global System for Mobile communications) is the leading wireless digital technology in the
world, with networks operating in more than 120 countries and serving more than 155 million
subscribers. As a member of this global system, GSM carriers in North America are dedicated to
offering their subscribers the best wireless roaming system in the world.
Q2. What advantages does GSM offer over other digital technologies ?
A2. With GSM, wireless customers get the richest, proven, advanced digital technology available in
the marketplace today. GSM offers a wider range of features and functionality than other emerging
technologies. GSM simplifies data transmission to allow laptop and palmtop computers to be
connected to GSM phones. GSM provides integrated voice mail, high-speed data, fax, paging and
short message services (SMS) capabilities. With GSM, customers get the advantage of the most
secure communications. GSM offers unparalleled call privacy and fraud prevention. As well as the
advantage of national and international roaming. In addition, GSM offers the best voice quality of any
digital wireless standard. Independent laboratory and field test reports validate near wireline parity.
Q3. How does GSM compare with existing analog cellular service ?
A3. GSM is far more advanced than traditional analog cellular technology still being used today by
many companies. A GSM user has access to services such as integrated voice, high speed data,
paging, fax and short message service, all from one network. And all through one handset. Only
GSM handsets incorporate a “smart” or “SIM card” which contains the subscriber’s personal
identification and service profile information such as billing, predefined speed dial numbers and
calling services.
Q4. Why did PCS providers in North America choose GSM ?
A4. They chose GSM because it is a proven technology that offers great flexibility in its features and
functions. In addition, subscribers eventually will be able to roam throughout the entire United States
and Canada with their phones, as well as roam through most of the world using the phone’s “smart”
card.
Q5. What is a “smart” card ?
A5. The SIM (Subscriber Information Module) card - a.k.a. “smart card” – holds all of a subscriber’s
personal information and phone settings. In essence, it is the subscriber’s authorization to use the
network. It also holds the phone number, personal security key and other data necessary for the
handset to function. The card can be switched from phone to phone, making the new phone receive
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Chapter 6 - Troubleshooting
all calls to the subscriber’s number. The SIM card is one of the security devices on the GSM
network, making it difficult to steal numbers or otherwise make fraudulent phone calls. The card also
allows for roaming with other GSM operators around the world. In addition, the card stores personal
phone numbers, missed calls, voice mail notifications, text messages, service center information, etc.
Furthermore, the card could be used for other purposes, such as a debit card, credit card, bus pass,
or other uses. The possibilities of SIM card technology are practically endless.
Q6. How do smart cards work ?
A6. The SIM (smart card) is inside each handset, and functions as its digital brain. It’s the SIM that
prevents your number from being stolen and your calls from being eavesdropped. The SIM’s digital
memory, which stores information like your rate plan and service features, also allows you to easily
personalize your service. The GSM standard provides the “brain” (smart card) of a PCS Mobile
Phone. It contains user ID and billing information that can be switched between different phones - so
calls can be made or received even when you’re not using your own phone.
Q7. Do smart cards come in more than one format ?
A7. Smart cards come in two formats. One version resembles a small chip and is semi-permanently
placed inside the phone. The second version is similar to a credit card and can be used in phones
equipped with a slot for the smart card.
Q8. How does the smart card help prevent fraud and “eavesdropping” ?
A8. In GSM networks, an encryption algorithm scrambles the digitized voice transmission between
the handset and the GSM transmission site. The information that is required to decode the encryption
is hidden within the smart card This feature provides the industry’s most effective prevention of radio-
based eavesdropping and cloning fraud.
Q9. When did the first GSM network start providing commercial service ?
A9. The first GSM systems began commercial operation in 1991 in Europe. Since then, more than
250 wireless service providers around the world have selected GSM-based systems for their
advanced digital wireless communications networks. GSM is the most widely used digital standard in
the world today and now represents nearly 40 percent of the world’s total market for wireless
services.
Q10. How popular is GSM in the U.S. and Canada ?
A10. In North America, 24 PCS companies have selected GSM as their digital technology. One of
the biggest reasons was the belief that GSM would give them an advantage in time to market. The
first U.S. commercial broadband PCS service went on-line in the Washington and Baltimore markets
in late 1995 (it was a GSM company). And since day one, GSM had led the market in terms of
coverage and customers. Today, 15 GSM companies across the U.S. & Canada now provide
commercial service to about two million customers in more than 1,500 cities in 41 U.S. states, the
District of Columbia and four Canadian provinces. But GSM’s popularity isn’t limited to just North
America. Two million new customers around the world are added every month. That’s one new
subscriber every second!
Q11 What benefits does GSM provide PCS customers ?
A11. With GSM, customers get the richest, proven, advanced digital technology available in the
marketplace today. GSM provides integrated voice mail, high-speed data, fax, paging and short
message services capabilities. With GSM, customers get the advantage of secure communications.
GSM offers unparalleled call privacy and fraud prevention. As well as the advantage of national and
international roaming. In addition, GSM offers the best voice quality of any digital wireless standard.
Independent laboratory & field test reports validate near wireline parity.
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Q12. What advantages does GSM provide to PCS operators ?
A12. For many operators, “time to market” is a critical issue. GSM is a proven, established
technology with a track record of success in enabling operators to launch their service first in a
market. Manufacturing efficiencies and economies of scale also make this technology a robust, cost
effective investment for PCS operators that . One North American GSM operator estimates a 30
percent savings of more than $200 million in building out its PCS network.
Q13. How does GSM’s total system specification benefit operators and consumers ?
A13. Every aspect of the technology has been defined in the standard. As a result, GSM service
providers are the only PCS licensees which have the ability to interchange mobile infrastructure
equipment from a variety of manufacturers. Because it’s a proven network technology with multiple
suppliers, GSM generates economies of scale and development momentum. This translates into
speed to market — in a cost effective manner. The GSM family of standards is supported by regional
and international service providers and manufacturers which work diligently to ensure the evolution of
the technology.
Q14. What about roaming capabilities ?
A14. GSM architecture supports full-featured, seamless roaming between GSM systems in North
America. This inherent roaming capability allows operators to easily exchange common services,
billing records and location information. Today, there are 62 international roaming agreements signed
with other GSM operators around the world.
Q15. How does GSM provide more advanced services and functionality than other digital
technologies ?
A15. One of the objectives for the GSM-based platform was to offer advanced services and
functionality from a single network. To meet this goal, the designers made it part of the standard and
based the architecture on the Integrated Services Digital Network (ISDN) call model. GSM operators
have the flexibility of offering integrated voice, high speed data, fax and short message services
capabilities from one network. GSM also has the Intelligent Network (IN) functionality required to offer
advanced subscriber features needed for private virtual networks such as call forwarding,
abbreviated dialing, restriction on incoming or outgoing calls and call handling procedures based on
location or time of day. The versatility and advanced feature functionality of GSM allows operators to
be extremely creative and diverse with their marketing strategies and service offerings. As a result,
GSM customers have more minutes of use than do the traditional cellular phone user.
Q16. What about voice quality of GSM ?
A16. Excellent voice quality is one of the primary requirements for PCS subscribers. That is why the
GSM community worked to develop the 13 kbps Enhanced Full Rate (EFR) vocoder which provides
voice quality that is competitive with wireline service. The selection of the vocoder was a cooperative
effort between GSM service providers and equipment manufacturers. The goal was to select one
vocoder and to establish an open standard so that any manufacturer could produce the handsets.
This teamwork approach demonstrates the common commitment that the entire GSM community has
to the standardization and continuing evolution of this technology.
Q17. What is the GSM MoU Association ?
A17. GSM operators are also part of a bigger wireless network family of worldwide companies. On
an international level, the GSM MoU Association, is composed of the world¹s GSM network
operators, regulators and administrators. The GSM MoU Association exists to drive the promotion,
development and deployment of the GSM standard as the world¹s leading digital platform for global
mobile communications. As such, it addresses issues which collectively face members around the
globe.
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Q18. What is GSM North America, the North American Interest Group ?
A18. On a regional basis, the MoU Association forms special interest groups, like GSM North
America, the Association’s North American Interest Group. This group’s purpose is to
•
•
•
•
•
Promote the technology
Identify/resolve compatibility, standards issues
Cooperative efforts, common solutions
Economies of scale, and
Educate and inform
Q19. What is the GSM Alliance ?
A19. The North American GSM Alliance, L.L.C. Alliance is the first and only, all-digital wireless PCS
network of U.S. and Canadian carriers. The GSM Alliance was established in August 1997 to create a
North American network and develop seamless wireless communications for customers, whether at
home, away or abroad. The GSM Alliance’s collaborative efforts focus on serving the wireless
customer most efficiently by concentrating on such areas as roaming, customer care, national
distribution and data communications. While identifying themselves as GSM Alliance members,
individual companies continue to operate their own businesses and market under their own names.
Q20. What does MultiMobile SoftGSM require from your GSM network subscription?
A20. To use SMS and phonebook management nothing special is required. To use fax and/or data
this must be enabled in your subscription. Some operators separates incoming calls from outgoing
calls. This means that you might be able to send fax but not receive.
Q21. Does one MultiMobile SoftGSM license support only one GSM phone ?
A21. MultiMobile SoftGSM is installed for one specific handset on one specific port. This means that
MultiMobile SoftGSM can only handle one phone on one port at a time.
Windows 95/98 FAQs
Q22. When is MultiMobile SoftGSM for Windows 95 available ?
A22. The Windows 95 version is available today.
Q23. How do I use MultiMobile SoftGSM with Dial-Up Networking under Windows 95 ?
A23. To use MultiMobile SoftGSM for dialup networking (RAS) on Windows 95 you must install
support for this on your computer. Refer to your Windows documentation or online at Microsoft at:
15.asp?PR=ALL&T1=1d&FR=0&A=T&T=T&S=F&
Windows NT FAQs
Q24. When is MultiMobile SoftGSM for Windows NT 4.0 available?
A24. The Windows NT 4.0 version is available today.
Q25. How do I use my MultiMobile card and MultiMobile SoftGSM with Dial-Up Networking
under Windows NT?
A25. To use MultiMobile SoftGSM for dialup networking (RAS) on Windows NT 4.0 you must install
support for this on your computer. How this is done can be found in your Windows documentation or
online at Microsoft at:
Note to Windows NT users: You must have Administrator privileges to install MultiMobile SoftGSM.
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MultiMobile SoftGSM User Guide
Troubleshooting Procedures
The following symptoms are typical of problems you might encounter:
Modem does not respond to commands
Follow the suggestions on the Support Screen in the MultiMobile SoftGSM utility (Refer to Chapter 2).
Check the Log modemconversation checkbox in the MultiMobile SoftGSM utility; all conversations
between the application and the MultiMobile SoftGSM modem is logged to a file named log.txt. The
contents of the log.txt file can help you pinpoint operational problems.
Software does not detect the phone on the Com port during installation
1. Some newer laptops may have the Com ports disabled in the system BIOS. Refer to the vendor
documentation for instructions on enabling the Com ports.
2. It could be a cabling problem. The cable may be incorrectly installed or it may be the incorrect
cable for the particular phone. To verify, open Window’s Program | HyperTerminal | Session |
Using MultiMobile SoftGSM. Try issuing AT commands to see if you can talk to the device. If you
cannot, reinstall the drivers.
Data connection to the GSM network through Dial-up networking or other communications
program fails
1. Ensure that your phone service has data services activated.
2. Ensure that you are using MultiMobile SoftGSM as your modem in the Dial-up networking
session.
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SoftGSM Kit
Chapter 7 - Warranty, Service, and Technical Support
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MultiMobile SoftGSM User Guide
Introduction
This chapter will provide you the resources for receiving service or support for your MultiMobile
SoftGSM. The chapter includes Multi-Tech’s license agreement, a description of the warranty, and
provides instructions for contacting the Service Department, Technical Support group, and various
Multi-Tech internet resources.
Software User License Agreement
SoftGSM software is licensed by Multi-Tech Systems, Inc. to the original end-user purchaser of the
product, hereafter referred to as “Licensee.” The License includes thhe distribution diskette, other
accompanying programs, and the documentation. The SoftGSM software, hereafter referred to as
“Software,” consists of the computer program files included on the original distribution diskette.
Licensee agrees that by purchase and/or use of the Software, he hereby accepts and agrees to the
terms of this License Agreement. In consideration of mutual covenants contained herein, and other
good and valuable considerations, the receipt and sufficiency of which is acknowledged, Multi-Tech
Systems, Inc. does hereby grant to the Licensee a non-transferable and non-exclusive license to use
the Software and accompanying documentation on the following conditions and terms:
The software is furnished to the Licensee for execution and use on a single computer system only
and may be copied (with the inclusion of the Multi-Tech Systems, Inc. copyright notice) only for use
on that computer system. The Licensee hereby agrees not to provide or otherwise make available
any portion of this software in any form to any third party without the prior express written approval of
Multi-Tech Systems, Inc.
Licensee is hereby informed that this Software contains confidential proprietary and valuable trade
secrets developed by or licensed to Multi-Tech Systems, Inc. and agrees that sole ownership shall
remain with Multi-Tech Systems, Inc.
The Software is copyrighted. Except as provided herein, the Software and documentation supplied
under this agreement may not be copied, reproduced, published, licensed, sublicensed, distributed,
transferred, or made available in any form, in whole or in part, to others, without expressed written
permission of Multi-Tech Systems, Inc. Copies of the Software may be made to replace worn or
deteriorated copies for archival or backup procedures.
Licensee agrees to implement sufficient security measures to protect Multi-Tech Systems, Inc.
proprietary interests and not to allow the use, copying or transfer by any means, other than in
accordance with this agreement. Licensee agrees that any breach of this agreement will be damaging
to Multi-Tech Systems, Inc.
Licensee agrees that all warranties, implied or otherwise, with regard to this Software, including all
warranties of merchantability and fitness for any particular purpose are expressly waived, and no
liability shall extend to any damages, including consequential damages, whether known to Multi-Tech
Systems, Inc. It is hereby expressly agreed that Licensee’s remedy is limited to replacement or refund
of the license fee, at the option of Multi-Tech Systems, Inc., for defective distribution media. There is
no warranty for misused materials.
This package contains 3.5-inch disks and/or CD-ROM discs. Neither this software nor the
accompanying documentation may be modified or translated without the written permission of Multi-
Tech Systems, Inc.
This agreement shall be governed by the laws of the State of Minnesota. The terms and conditions of
this agreement shall prevail regardless of the terms of any other submitted by the Licensee. This
agreement supersedes any proposal or prior agreement. Licensee further agrees that this License
Agreement is the complete and exclusive statement of Agreement, oral, written, or any other
communications between Multi-Tech Systems, Inc. and Licensee relating to the subject matter of this
agreement. This agreement is not assignable without written permission of an authorized agent of
Multi-Tech Systems, Inc.
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Chapter 7 - Warranty, Service, and Technical Support
Limited Warranty
Multi-Tech Systems, Inc. (“MTS”) warrants that its products will be free from defects in material or
workmanship for a period of two years from the date of purchase, or if proof of purchase is not
provided, two years from date of shipment. MTS MAKES NO OTHER WARRANTY, EXPRESSED
OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. This warranty does not apply to any
products which have been damaged by lightning storms, water, or power surges or which have been
neglected, altered, abused, used for a purpose other than the one for which they were manufactured,
repaired by the customer or any party without MTS’s written authorization, or used in any manner
inconsistent with MTS’s instructions.
MTS’s entire obligation under this warranty shall be limited (at MTS’s option) to repair or replacement
of any products which prove to be defective within the warranty period, or, at MTS’s option, issuance
of a refund of the purchase price. Defective products must be returned by Customer to MTS’s factory
transportation prepaid.
MTS WILL NOT BE LIABLE FOR CONSEQUENTIAL DAMAGES AND UNDER NO CIRCUMSTANCES WILL
ITS LIABILITY EXCEED THE PURCHASE PRICE FOR DEFECTIVE PRODUCTS.
On-line Warranty Registration
If you would like to register your MultiMobile SoftGSM electronically, you can do so at the following
address:
Tech Support
Multi-Tech has an excellent staff of technical support personnel available to help you get the most out
of your Multi-Tech product. If you have any questions about the operation of this unit, call 1-800-972-
2439. Please fill out the MultiMobile SoftGSM information (below), and have it available when you
call. If your MultiMobile SoftGSM requires service, the tech support specialist will guide you on how
to send in your equipment (refer to the next section).
Recording MultiMobile SoftGSM Information
Please fill in the following information on your MultiMobile SoftGSM. This will help tech support in
answering your questions. (The same information is requested on the Warranty Registration Card.)
Model No.: _________________________
Software Version: ____________________
The model number is on the bottom of your MultiMobile SoftGSM.
Please note the type of external link device that is connected to your MultiMobile SoftGSM before
calling tech support. Also, note the status of your MultiMobile SoftGSM including LED indicators,
screen messages, diagnostic test results, problems with a specific application, etc. Use the space
below to note the status:
________________________________________________________________________________________________________
________________________________________________________________________________________________________
________________________________________________________________________________________________________
________________________________________________________________________________________________________
______________________________________________________________________________________________________________
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Contacting Tech Support via E-mail
If you prefer to receive service on-line, via the Internet, you can contact Tech Support via e-mail at
the following address:
Service
If your tech support specialist decides that service is required, your MultiMobile SoftGSM can be sent
(freight prepaid) to our factory. Return shipping charges will be paid by Multi-Tech Systems.
Include the following with your MultiMobile SoftGSM:
•
•
•
•
a description of the problem.
return billing and return shipping addresses.
contact name and phone number.
check or purchase order number for payment if the MultiMobile SoftGSM is out of warranty.
(Check with your technical support specialist for the standard repair charge for your
MultiMobile SoftGSM).
•
if possible, note the name of the technical support specialist with whom you spoke.
Send your MultiMobile SoftGSM to this address:
MULTI-TECH SYSTEMS, INC.
2205 WOODALE DRIVE
MOUNDS VIEW, MINNESOTA 55112
ATTN: SERVICE OR REPAIRS
You should also check with the supplier of your MultiMobile SoftGSM on the availability of local
service and/or loaner units in your area.
The Multi-Tech BBS
For customers who do not have Internet access, Multi-Tech maintains a bulletin board system (BBS)
that mirrors its FTP site. Information available from the BBS includes new product information,
product upgrade files, and problem-solving tips. The phone number for the Multi-Tech BBS is (800)
392-2432 (USA and Canada) or (612) 785-3702 (international and local).
The BBS can be accessed by any asynchronous modem operating at 1200 bps to 33,600 bps at a
setting of 8 bits, no parity, and 1 stop bit (8-N-1).
To log on to the Multi-Tech BBS
1. Set your communications program to 8-N-1.
2. Dial our BBS at (800) 392-2432 (USA and Canada) or (612) 785-3702 (international and local).
3. At the prompts, type your first name, last name, and password; then press ENTER. If you are a
first time caller, the BBS asks if your name is spelled correctly. If you answer yes, a questionnaire
is displayed. You must complete the questionnaire to use the BBS on your first call.
4. Press ENTER until the Main Menu is displayed. From the Main Menu you have access to two
areas: the Files Menu and News. For help on menu commands, type ?.
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Chapter 7 - Warranty, Service, and Technical Support
To Download a file
If you know the file name
1. From the Main Menu, type F to access the Files Menu, then type D.
2. Enter the name of the file you wish to download from the BBS.
3. If a password is required, enter the password.
4. Answer Y or N to the automatic logoff question.
5. Select a file transfer protocol by typing the indicated letter, such as Z for Zmodem (the
recommended protocol).
6. If you select Zmodem, the transfer will begin automatically. If you select another protocol, you
may have to initiate the transfer yourself. (In most datacomm programs, the PAGE DOWN key
initiates the download.)
7. When the download is complete, press ENTER to return to the File Menu.
8. To exit the BBS, type G and press ENTER.
If you don’t know the file name
1. From the Main Menu, type F to access the Files Menu. For a list of file areas, type L, press
ENTER, then type L and press ENTER again. (If you do not type the second L, you will list all of
the files on the BBS.)
2. Mark each file area you would like to examine by typing its list number and pressing ENTER.
3. Enter L to list all the files in the selected file areas. Enter C to go forward in the file list and P to
go back.
4. To mark one or more files for download, type M, press ENTER, type the list numbers of the files,
and press ENTER again.
5. Enter D. You will see a list of the files you have marked. Enter E if you would like to edit the list;
otherwise enter D again to start the download process.
6. Select a file transfer protocol by typing the indicated letter, such as Z for Zmodem (the
recommended protocol).
7. If you select Zmodem, the file will transfer automatically. If you select another protocol, you may
have to initiate the transfer yourself. (In most data communications programs, the PAGE DOWN
key initiates the download.)
8. When the download is complete, press ENTER to return to the File Menu.
9. To exit the BBS, type G and press ENTER.
About the Internet
Multi-Tech is a commercial user on the Internet, and we retrieve messages from our customers on a
periodic basis. Multi-Tech’s presence includes a Web site at:
and an ftp site at:
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About the Multi-Tech Fax-Back Service
Multi-Tech’s fax-back system provides 24-hour access to sales, marketing, and technical literature.
Dial 612-717-5888, follow the voice prompts, and request document number 10 for a catalog of
available documents. For convenience, have your fax number handy:
_________________________. From the catalog of available documents, you can order newsletters,
white papers, press releases, etc. from the sales and marketing index (pages 1-4), or order basic
modem operation and troubleshooting guides from the technical support and engineering index. Just
enter the applicable FB Doc. # from the left column of the catalog.
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Appendix A - Understanding GSM
Introduction
This appendix provides background information on GSM standards, data and applications. GSM is a
global standard for digital wireless communications, with extensive roaming capabilities for both voice
and data services. It has been commercially available since 1992.
GSM networks are currently operating in more than 120 countries worldwide which now (December,
1998) includes in excess of 155 million GSM subscribers worldwide.
GSM offers advanced mobile data capabilities, previously unavailable on analog cellular networks. It
offers mobile workers use anytime, anywhere which is unmatched by fixed telephone networks.
Wireless GSM data can be used for a wide range of applications including Email, Facsimile, Internet
access and Remote LAN Access.
GSM is uniquely-positioned to meet the mobile data needs of handheld computer users. Cooperation
between the GSM handset manufacturer and data solutions providers is key to developing reliable,
robust products. GSM data solutions work with all GSM networks (GSM 900, DCS 1800 and PCS
1900). The cost of using GSM data is dropping.
There are currently more than 200 licensed networks in over 120 countries around the world. This
allows for the provision of a wide range of services for both business and consumer user alike. GSM
offers higher quality speech (owing to its digital nature) and integrated data services for a wide range
of applications which can be used both domestically and internationally.
About GSM Data
GSM data provides the ability to send data or fax information over the GSM network. Data over GSM
offers new opportunities for both GSM network operators and mobile workers alike. By using GSM to
send and receive data or faxes, mobile workers have access to a level of geographic mobility
previously unobtainable. Currently, you can send data over the GSM network at speeds of up to 9.6
Kbps per second. Although this is notably slower than today’s land line modems, ETSI 7 is continuing
to develop the GSM standard.
When you make a data call, simply dial the number to which you wish to send information. The GSM
network connects the user’s call to its Interworking Function (IWF), which then completes the call to
the remote terminal. In effect you are dialing the IWF, and then the IWF is dialing the remote terminal.
The IWF acts as a gateway, translating between the GSM set of protocols and the protocols used by
different types of networks. This allows a GSM network to connect to a range of different network
types, such as a POTS, ISDN or X.25 network. (See Figure below.)
Figure B-1. Making a GSM Data Call
Data can be transmitted once a connection between the mobile user and the remote terminal has
been established. Data can be sent over the GSM network in one of two modes: transparent mode or
non-transparent mode.
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Transparent Mode
In transparent mode, a non error-corrected connection is established between the user and the
remote terminal. Data is then sent asynchronously. Because no error correction is taking place, there
is little delay (latency) in transmitting data over the link.
Non-transparent Mode
In non-transparent mode, a secure error-corrected link is established between the mobile terminal
and the remote modem. The connection between the mobile terminal and the GSM network uses the
Radio Link Protocol (RLP) for error correction. The IWF then establishes a connection to the remote
modem. Apart from having an error corrected link, there are two other main benefits to using non-
transparent mode, these are:
•
•
An increase in data throughput of approximately 20 percent
Better call handling by the GSM network
Faxing
Sending a fax is similar to sending data. To send a fax, an initial call is made to the network. The call
is then routed through the network to the IWF. The IWF then establishes a connection to the remote
fax machine. The fax protocols are then passed end-to-end between the mobile terminal and the
remote fax machine. Fax data is transmitted synchronously and is not tolerant of any latency;
therefore Transparent mode must be used for Faxing.
GSM Data Benefits
For many years cellular communications have only been associated with voice communications, so
for many, using GSM network for data is a new concept. Many of the benefits derived from using
GSM data are similar to the benefits of using mobile phones. Some of the key benefits are outlined
below:
•
Use anytime, anywhere. One major benefit of using GSM data is that you can use it from
any location at any time. There is no need to rely on being able to gain access to a POTS
(Plain Old Telephone Service) line, or wasting time trying to find one. Using GSM provides for
a faster response time for mobile employees. This is becoming an increasingly important
factor in countries where the POTS network is underdeveloped. When used this way, GSM
can provide a real competitive advantage to an organization. For example, sales people out
in the field can send information to relevant parties immediately. This can allow a company to
differentiate itself from its competitors, by its ability to respond to their customers needs in a
time frame that meets (or exceeds) their customers’ requirements.
•
Ease of use for international travelers. Using the POTS in a foreign country can often prove
to be a daunting and complex operation. For example, the user needs to select the correct
telephone connector, ensure that the modem is approved for connection to the POTS within
that country, and deal with potential line quality and integrity issues for use over long
distances. All this can be side-stepped by using GSM, where the user is able to use their
equipment in the way they normally would. Using GSM in a foreign country can also prove to
be a more cost-effective solution for mobile data than a fixed network. Typically when staying
in hotels, calls are charged at a premium rate making data communications excessively
expensive. By using GSM users can actually achieve a cost advantage through bypassing
the premium charged by the hotel.
•
Secure communications. A company’s information is sensitive and hence it is important that
the integrity of the information is not compromised. Sending data over the POTS network in
its analogue form is not secure. Only a very small number of modems are capable of
encrypting data, and these carry a significant price premium. Because GSM is a digital
technology, it is inherently more secure. As part of the GSM standard, both data and voice
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transmissions are encrypted for transmission across the network. This has been a key
strength for GSM providing peace of mind for users, without the need for additional
expenditure on expensive hardware and software.
•
Quick call set-up. GSM was developed to interwork with the Integrated Services Digital
Network (ISDN). ISDN uses a technique known as rate adaptation to convert the slower
GSM data up to 64 Kbps ISDN data 12. As a result when a data call is made from a GSM
handset to an ISDN terminal adapter, the quick call set-up capability of ISDN can be utilized.
Typically, the call set-up time dialing into an ISDN TA is 3-4 seconds, as compared with
dialing into a V.34 modem which will average 35-40 seconds.
GSM Data Applications
With today’s relatively low data rate for GSM, the range of applications has been limited. However as
GSM’s data capabilities are enhanced, the range of applications for which it can be used will
increase. At present Email, fax and mobile Internet access are among the more popular applications.
To receive fax and data services to a handset, you will need to obtain a separate fax and data
number from your network operator.
•
Mobile Internet access. The Internet is becoming increasingly important in the commercial
world. Having the ability to access the Internet from any location will become a vital tool for
mobile workers. Many GSM network operators are now developing dedicated Internet access
services, allowing users to dial into a virtual point of presence. Connection to the Internet is
typically over an ISDN link, which provides for quicker call set-up and clear-down. Although
Internet access over GSM may be slower than traditional landline Internet access, many web
pages now offer text only versions. Alternatively, users can normally configure their web
browser not to receive graphical images, thus decreasing the amount of time required for
downloading web pages.
•
Remote database access. Remote database access is becoming an increasingly popular
application in the mobile data environment. Often sales people out in the field need up to the
minute information, such as pricing, stock details or financial information etc. By enabling
remote access to databases over GSM, information can be accessed almost immediately by
people away from the office. Many companies are now moving to provide access to
databases via the Internet, to take advantage of its local call rates.
•
•
E-mail. The ability for mobile workers to send and retrieve electronic mail while away from
the office is now a necessity. GSM data users are able to send and receive E-mail in the
same way as they would, using a standard modem.
Short Message Service (SMS). SMS is the method by which short text messages can be
sent or received by a GSM handset (in effect users can send GSM’s own version of E-mail to
each other). To use SMS, the user types the message by pressing the number pad of the
phone to correspond with a given letter (i.e. to type the letter b, you would press the number
2 twice). There are 2 main types of SMS services, point-to-point and cell broadcast. Point-to-
point is for sending a short message of up to 160 characters to an individual subscriber. Cell
broadcast messages are up to 93 characters long, and are typically broadcasts from the
network operator to a number of subscribers. Instead of typing the message on the handset
itself, many users find it easier to use software that allows them to type the SMS message
using the PC keyboard. As with the general data services, ETSI has made a number of
revisions to the original SMS specification allowing a range of new services to be offered to
users. These include concatenated short messages, which provides for the sending of
multiple short messages to a user who can then reassemble the messages to create a large
message.
•
File transfer and remote LAN access. Mobile users can use GSM to remotely connect to
their corporate LAN. With GSM digital technology, it can be more secure to use GSM as
opposed to traditional analog modems, especially if logging to the corporate LAN from a
different country. By default, all voice and data traffic sent across the GSM network is
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Appendices
encrypted. GSM uses special encryption keys, which are synchronized between the
Subscriber Identification Module (SIM) card and the GSM network. Most network operators
will provide corporate customers with dedicated connection into the corporate LAN, thus
bypassing the POTS network, and interconnection charges. If this connection is ISDN, then
the benefits of quick call set-up and tear-down can be utilized.
•
Group 3 Fax. Using fax software, mobile users can send and receive faxes as if they are
actually in their office.
GSM Data Support
For any organization, supporting its information technology users is a key issue. This is especially
true for mobile workers who do not have full-time access to hands on help. Many of the support
issues for GSM data users will be the same as those for PC Card modem users. However, because
GSM data involves a number of different technologies working together, there are a number of
different companies to turn to for support when problems occur. Including the:
•
•
•
•
•
•
GSM network operator
Airtime service provider
GSM handset manufacturer
PC Card manufacturer
Notebook manufacturer
Software vendor
There are three key areas where problems are likely to be encountered for first time GSM data users:
•
Installing the PC Card. As with any PC Card product, problems can be experience when first
installing the PC Card.
•
Supporting the PC application. It is important to ensure that the software you wish to use
with GSM data is capable of working with GSM. Today the most popular software
applications will work with GSM data.
•
Enable data for the handset. GSM data users require a separate data and fax number from
their voice number to let them receive data and fax calls. It is important to verify with your
airtime service provider or network operator that data has been enabled for the handset.
One of the key benefits of GSM data is the ability to ‘roam’ internationally. This can, however, present
new support issues for users. It is important to ensure that roaming agreements are in place for both
voice and data (some network providers have agreements that are for voice-only roaming). When
selecting a GSM data solution to be used for roaming, ensure that the vendor can provide a level of
worldwide support. This helps reduce the amount of time it takes to resolve any problems that occur
when roaming.
GSM uses a technique called Time Division Multiple Access (TDMA) to divide the radio channel into
8 different time slots, 7 for voice or data calls, and 1 channel for call progress and control information.
Under normal operation a voice or data call would use one of these time slots.
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GSM Statistics (Updated February, 99)
North American customers:
2 Million
Worldwide customers
155 Million
U.S. Companies with more than 100,000 customers
Worldwide networks with 100,000+ customers
7
68
N.A. Companies with active commercial GSM service 15
Countries with active commercial GSM service
GSM MoU Assn. Members
120
256
24
N.A. Companies Planning to Use GSM
Cities with Commercial Service (20,000+ POPS)
Cities with Commercial Service (50,000+ POPS)
Cities with Commercial Service (75,000+ POPS)
Cities with Commercial Service (100,000+ POPS)
U.S. States, D.C. and Canadian Provinces with
commercial service
674
252
151
114
38
Active Cell Sites
7,441
Employees
7,623
Total U.S. POPS
260 Million
136 Million
427
Covered POPS in active markets to Date
US PCS licenses to have GSM Service
Additional Facts
•
GSM customer numbers area growing at a rate of 80 percent; One million signed up in 8
months
•
GSM’s North American network is the 12th GSM system to exceed one million customers.
•
GSM companies in North America are signing up customers at a rate of 137 an hour, two a
minute.
•
Seven GSM companies in the U.S. have more than 100,000 customers. It took the entire
U.S. cellular industry more than 4 years to reach as many customers as GSM has added in
the past 12 months.
•
•
More than 600 GSM cities activated in 12 months. The equivalent of nearly two new cities a
day.
GSM carriers have built nearly 7,500 cell sites in two years (Entire U.S. cellular industry took
7 years)
•
GSM carriers have created more than 7,500 new jobs in U.S. & Canada.
•
Two million new GSM customers around the world are added every month - that’s one new
subscriber every second!
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For More Information
The GSM MoU is the office association for GSM network operators. The GSM MoU website provides
a wide range of information on the geographic coverage of GSM around the world. Information is also
provided on the services and tariffs of each GSM operator worldwide.
This web site provides a look at Global System for Mobile Communications (GSM), the premier
wireless digital technology in the world. This site is brought to you by the GSM Alliance, GSM North
America: the North American Interest Group of the GSM MoU Association, and the manufacturers of
GSM equipment in North America: Ericsson, Motorola, Nokia, Nortel, and Siemens.
The mobile data initiative (MDI) was formed to provide GSM hardware manufacturers with a forum for
discussion on how to promote the concept of GSM data, as well as hosting regular “Plug Fest” events
for testing GSM data products to ensure interoperability. The MDI web site provides information on
using and selecting GSM hardware, as well as case studies for companies already using GSM data.
The GSM Data web site provides a wide range of information on issues relating to GSM. It provides
links to journal articles (current and archived), using GSM data, supported and emerging utilities,
coming events, the future of GSM, etc.
Ericsson is a leading developer of GSM products, and has a strong position in many different
geographic markets. Ericsson’s website has information on current GSM developments, and you can
subscribe to the Ericsson news service which automatically E-mails you the latest Ericsson press
releases for mobile communications.
Nokia is one of the world’s leading GSM handset and infrastructure manufacturers. Nokia’s website
provides information on GSM and current developments within the GSM industry. Nokia also
publishes white papers and conference speeches on GSM.
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A
Analog: A method of signalling used to represent an infinite range of numbers. The most analog
devices are POTS telephones, and modems.
AT Command set: A set of instructions used to control modems and ISDN terminal adapters,
normally beginning with AT.
AT Command: An instruction sent to a modem, beginning with AT.
B
bps (Bits Per Second): A measurement of transmission speed.
C
CONCAT: Concatenated short messages provide for the sending of multiple short messages to a
user who can then reassemble the messages to create a large message
D
Data over GSM: The ability to transmit digital data over a GSM network.
Digital: A method of signalling that can only represent integers. For computers these are 0 and 1.
Dual-band Phone: A GSM phone that operates on two different bands (e.g., 900/1800 or 900/1900).
E
Error Correction: A method for identifying errors during data transmission and requesting re-
transmission of any corrupted data.
ETSI (European Telecommunications Standards Institute): The European standards body
responsible for defining and maintaining the GSM standard.
G
GPRS (General Packet Radio Services): A proposed packet data standard for GSM, capable of
providing data speeds up to 170 Kbps.
Group 3 Fax: An ITU standard for controlling facsimile communication.
GSM (Global System for Mobile Communication): An ETSI standard for digital wireless voice and
data communications.
GSM Data Interface: The interface on a GSM phone for connecting a serial cable to a PC or PC
Card.
GSM MoU (Memorandum of Understanding) Association: The GSM organization that oversees the
implementation of GSM networks around the world.
I
International Roaming: Outside North America, GSM users can roam seamlessly throughout
Europe, and in more than 60 other countries around the world. This provides a level of mobility
unmatched by any other cellular technology. GSM networks operate at different frequencies outside
North America, and as a result users roaming internationally may need to change the phone that they
are using. All a user needs to do is simply hire or buy the appropriate phone, and insert their existing
SIM card in to the phone (for an explanation of a SIM card see the following section), this is refered
to as “SIM Card Roaming”. Users will then be able to make and receive calls, as they would using
their normal phone. Many network operators now operate hiring schemes for their subscribers who
wish to roam internationally. Advances in phone technology will soon see the availability of phones
that can work on different frequencies. This will eliminate the need to change phones when travelling
outside North America.
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Glossary
ISDN (Integrated Services Digital Network): A replacement for the POTS system, providing digital
voice and data services. ISDN can provide simultaneous voice and data calls to different locations.
ISDN TA: ISDN Terminal Adapter, also referred to as an ISDN Modem. A digital device used to
connect to, and transmit data over, an ISDN digital telephone line.
ITU (International Telecommunications Union): Governing body for the many worldwide
telecommunications standards, including those for modems and ISDN.
IWF (Inter-working function): An essential part of any GSM network which handles interconnection
between the GSM network and fixed networks such as POTS or ISDN.
M
Modem (MOdulator/DEModulator): A device allowing computers to communicate over POTS lines.
N
National Roaming: Following the establishment of the GSM Alliance, affiliated network operators
can offer their subscribers nationwide roaming services through the United States and Canada. The
alliance provides for seamless roaming of both voice and data services. Apart from the 7 founder
members of the GSM Alliance, other GSM network operators in North America have shown support
for the Alliance, and will be invited to join the Alliance during 1998. Another benefit of the Alliance, is
the implementation of “611” as a customer support number. This allows users can gain support
regardless of the network they are using, or their location.
Non-transparent data: A method of transmitting data over a network where the network can identify
the data being sent, and can control the data session. In a GSM network the RLP protocol for error
correction is implemented for a non-transparent data session.
P
Packet Mode: A method of transferring data between two devices without the need to establish a
direct connection.
PC Card (previously PCMCIA): A device for connecting peripheral devices to a mobile computer.
Also the standard for such devices.
PCS (Personal Communications Services): A range of standards for digital wireless
communications operating in the 1850-1990 MHz frequency range. Services included high quality
digital voice, data, fax and two-way messaging services.
PDU (Protocol Data Unit): A coded and packetized unit of the SMS containing the message, receiver
address, and all parameters needed by the GSM network. The coding and packetizing can be done
in different ways as specified in GSM 03.38 and GSM 03.40. The MultiMobile SoftGSM user
application for sending SMS can packetize these PDUs in either 7-bit or 8-bit format (GSM 03.38).
POTS: The “Plain old Telephone System.”
R
Roaming: the ability for a subscriber to make and receive calls outside their home network. This is
one of the key differences between the first generation analog cellular networks and second
generation digital cellular networks such as GSM. To enable roaming, the network operator must
establish and implement a roaming agreement. Today some GSM network operators have in excess
of 60 international roaming agreements, spanning GSM 900, 1800 and 1900 networks. This allows
network operators to provide their customers with A worldwide service 5 unmatched by any other
cellular technology. When users are roaming either nationally or internationally, all their call and
service charges are billed to their home network. (Note: always check with your service provider to
ensure that they have the relevant roaming agreements. Many network operators will charge a
premium for roaming services. Also, consult your network operator for advice on roaming call
charges.)
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RLP (Radio Link Protocol): An error-correction protocol used by GSM.
Roaming: The ability to make and receive calls outside a user’s home cellular network.
S
SIM (Subscriber Information Module) card: also referred to as “Smart Card”. Stores information
about the subscriber, such as their telephone number. The SIM card fits inside a GSM phone, and
contains an individual subscriber’s personal information. The information contained on the SIM card
is used for identification and authentication of a subscriber by the GSM network, and hence acts as a
security key. The SIM card provides a high level of security, making it extremely difficult to make
fraudulent calls using GSM. To date, there have been no known cases of fraudulent use. The SIM
card also provides personal mobility for an individual, allowing them to access all of their personal
services (such as voice mail, call forwarding etc.) regardless of the phone that they are using. The
SIM card also provide a limited amount of local storage, which can contain names and telephone
numbers, missed call, SMS text messages, service center location, and notification information from
their network operator. Since a SIM card can be moved from phone to phone, you can easily change
or upgrade your phone, while retaining all of your personal information and phone number.
SMS (Short Message System): A text-based, 160-character, two way messaging system for GSM.
T
Transparent data: A method of transmitting data over a network, where the network does not
recognize the data being sent, and is not able to control the data session. For GSM, this method is
best for suited to situations where the data being sent cannot tolerate any latency, such as facsimile
applications.
V
V.42bis: An ITU standard for data compression.
V.110: An ITU standard for rate adaptation. Allow slow speed terminals (up to 19.2 Kbps) to connect
to an ISDN Terminal Adapter.
W
World Phone (Tri-band phone): A GSM term that represents a phone that can operate at 900, 1800
and 1900 MHz.
X
X.25: A standard for packet switched data networks.
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Glossary
GSM Acronyms
The acronyms below are used in the GSM MoU (Memorandum of Understanding):
A
AAB
AAC
ABD
ABR
ACB
ACC
ACTE
ANSI
AoC
APC
Automatic Alternative Billing
Authentication and Access Control
ABbreviated Dialing
Available Bit Rate
Automatic Call Back
Account Card Calling
Approvals Committee for Terminal Equipment
American National Standard Institute
Advice-of-Charge
American Personal Communications
B
B-ISDN
BA
Broadband ISDN
Basic Access
BAIC
Barring of All Incoming Calls
Barring of All Outgoing Calls
Bit Error Ratio
BAOC
BER
BIC-Roam
BOIC
Barring of Incoming Calls when roaming outside the Home PLMN Country
Barring of Outgoing International Calls
C
CBR
CCF
Constant Bit Rate
1. Call Control Function
2. Connection (call) Control Function
CCH
CCIR
CCITT
CD
Control CHannel
Consultative Committee for International Radio (now ITU-R)
International Telegraph and Telephone Consultative Committee
Call Distribution
CDMA
CERT
CF
Code Division Multiple Access
Service Provider / Terminal Manager certificate
Call Forwarding
CFB
Call Forwarding on Mobile Subscriber Busy
Call Forwarding Unconditional
CFU
CH
Call Hold
CHA
Call Hold with Announcement
CHALL
CIC
A random number (see also RNDu, RNDT)
Confidentiality and Integrity Control
Common Management Information Protocol
Customer Management System
CMIP
CMS
CNIP
CNIR
CNMA
CON
CONP
CONR
CPE
Calling Number Identification Presentation
Calling Number Identification Restriction
Customer Network Management Access
CONference Calling
Connected Number Identification Presentation
Connected Number Identification Restriction
Customer Premises Equipment
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CPIP
CPM
CPN
CPT
CPU
CRD
CRG
CS
Calling Party Identification Presentation
Customer Profile Management
Customer Premises Network
Control Point Transfer
Central Processing Unit
Call Rerouting Distribution
Customised Ringing
Capability Set
CT
1. Call Transfer
2. Cipher text for MT
3. Cordless Telephone
Cordless Terminal Mobility
Closed User Group
CTM
CUG
CW
Call Waiting
D
DCPN
DCR
Domestic Customer Premises Network
Destination Call Routing
DECT
DPE
Digital Enhanced (European) Cordless Telecommunication
Distributed Processing Environment
Dynamic Random Access Memory
Direct Sequence
DRAM
DS
DTMF
Dual Tone Multiple Frequency
E
EFS
EHIMA
EIA
Error Free Seconds
European Hearing Instruments Manufactures
Electronic Industry Association
European Interest Group
EIG
EII
European Information Infrastructure
Equipment Identity Register
EIR
EMC
ERM
ERP
ETR
ETS
ETSI
Electro-Magnetic Compatibility
EMC and Radio Matters
Equivalent Radiated Power
ETSI Technical Report
European Telecommunication Standard
European Telecommunications Standard Institute
F
FDD
FDMA
FE
Frequency Division Duplex
Frequency Division Multiple Access
Functional Entity
FEC
FH
Forward Error Correction
Frequency Hop
FMA
FMD
FPH
FSS
Frames Multiple Access
Follow-Me Diversion
Freephone
Fixed Satellite Service
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Glossary
G
GAP
GII
Call GAPping
Global Information Infrastructure
Global Mobile Multimedia
GMM
GSMC
GoS
Gateway Mobile services Switching Center
Grade of Service
GPRS
GPS
GRAN
GSM
GSO
GUI
General Packet Radio System
Global Positioning System
Generic Radio Access Network
Global System for Mobile (Tele)communication
Geostationary Satellite Orbit
Graphical User Interface
H
H
Hash function
HC
Handover Criteria
HDML
HEC
Handheld Device Mark up Language
Header Error Control
HEO
Highly-inclined Elliptical Orbit
High Performance Radio Local Area Network
Home Location Register
HIPERLAN
HLR
HOC
Handover Control
HRS
Home Location Register Subsystem
High Speed Circuit Switch Data
Home Public Land Mobile Network
Handover User Profile
HSCSD
HPLMN
HUP
I
IBCN
ICO
ICSI
ID
Integrated Broadband Communications Network
Intermediate Circular Orbit
International Charged Subscriber Identifier
Handover Initiation and Decision
International Gateway Point
IGP
IM
lncall Modification
IMSI
IMTI
IMUI
IMUN
IN
International Mobile Subscriber Identity
International Mobile Terminal Identifier
International Mobile User Identity
International Mobile User Number
Intelligent Network
IP
Intelligent Peripheral
IRID
IS
Intended Recipient IDentification Presentation
Interim Standard
ISC
ISDN
ISL
International Switching Center
Integrated Service Digital Network
lnter-Satellite Links
ISO
ISSCC
I-STP
IT
International Standards Organisation
International Solid State Circuit Conference
International Signalling Transfer Point
Information Technology
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ITU
International Telecommunication Union
ITU-R
ITU-T
IUN
ITU Telecommunication Radio Sector
ITU Telecommunication Standardization Sector
International UMTS Number
Interworking Function
IWF
IWU
Interworking Unit
J
JDC
Japan Digital Cellular
K
KAT
KAU
KC
Terminal session key
User session key
Ciphering key
Kph
Kpm
KPN
KPSP
KPT
KPU
Kpv
Ksh
Ksm
KSN
KSSP
KST
KSU
Ksv
Public home service provider key (public key schemes)
Public network key (public key schemes)
Public network encryption key (public key schemes)
Public service provider authentication key (certified public key schemes)
Public terminal authentication key (public key schemes)
Public user authentication key (public key schemes)
Public visited service provider key (public key schemes)
Secret home service provider key (public key schemes)
Secret network key (public key schemes)
Secret network encryption key (public key schemes)
Secret service provider authentication key (certified public key schemes)
Secret terminal authentication key (public key schemes)
Secret user authentication key (Public key schemes)
Secret visited service provider key (public key schemes)
Terminal authentication key (secret key schemes)
User authentication key (secret key schemes)
Intermediate ciphering key (public key schemes)
KT
KU
KX
L
LA
Location Area; i.e. Location Area identity
Location Area Identifier
Location Area Identifier
Local Exchange
LAI
LAJ
LE
LEI
Local Exchange Identifier
Low Earth-Orbit (Satellite)
Land Earth Station
LEO
LES
LIM
LOCM
LOG
LOS
Call LIMiter (Service feature)
LOCation Management
Call LOGging (Service feature)
Line-Of-Sight (path)
M
M&PC
MAC
MAG
MAP
MAS
Mobile & Personal Communications
Medium Access Control layer
Market Aspect Group
Mobile Application Part
MASs calling
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Glossary
MBCF
MCCF
MCF
MCI
Mobile Bearer Control Function
Mobile Call Control Function
Mobile Control Function
Malicious Call Identification
Mobile DPE Bridge
MDRA
MEF
MEO
MESf
MF
MEasurement Function
Medium-attitude Earth Orbit
Mobile Earth Station (fixed)
Mediation Function
MIPS
MMC
MMI
Millions of Instructions per Second
Meet-Me Conference
Man Machine Interface
MN
Message sent from Network
Memorandum of Understanding
Mobile Radio Bearer Control
Mobile Radio Link Control
Mobile Radio Resource Allocation
Mobile Radio Resource Control
Mobile Radio Transmission and Reception
Mobile Station
MoU
MRBC
MRLC
MRRA
MRRC
MRTR
MS
MSC
MSCP
MSf
Mobile-services Switching Centre
Mobility and Service Control Point
Mobile Station (fixed)
MSF
MSS
MT
Mobile Storage Function
Mobile Satellite System
1. Message sent from Terminal
2. Mobile Termination
MTRN
MUI
Mobile Terminal Roaming Number
Multimedia User Interface
Mufti-Way Calling
MWC
N
N
Network
NAIG
NEF
NP
North American Interest Group
Network Element Function
Network Performance
National Signalling Transfer Point
Network layer
N-STP
NTWK
O
OCS
OFA
ONC
ONE
OS
Originating Call Screening
OFf net Access
Off Net Calling
ONE number
Operations System
OSF
OSI
Operations System Functions
Open Systems Interconnection
Operations Support System
OSS
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P
P
Processing
PABX
PAI
Private Automatic Branch Exchange
Paging Area Identifier
PC
Personal Computer
PCH
PCN
PCS
PDA
PDN
Paging CHannel
Personal Communications Network
Personal Communications Service
Personal Digital Assistant
1. Public Data Network
2. Packet Data Network
PES
PHS
PHY
PIN
Personal Earth Station
Personal Handy Phone System
PHYsical layer
Personal Identification Number
Public Land Mobile Network
Physical Medium (sublayer)
Private Mobile Radio
PLMN
PM
PMR
PMSN
PN
Public Mobile Satellite Network
Personal Numbering
PNP
POTS
PRA
PRI
Private Numbering Plan
Plain Old Telephone Service, residential type service
Primary Rate Access, via PRI for ISDN
Primary Rate Interface
PRM
PRMC
PS
Premium Rate Services
Premium Rate charging
Personal Station
PSN
PSPDN
PSTN
PTN
PTT
Packet Switched Network
Packet Switched Public Data Network
Public Switched Telephone Network
Private Telecommunications Network
Post Telegraphy and Telecommunications
Personal Wireless Telecommunication
PWT
Q
QAF
Q Adapter Function
Quality of Service
Call QUEuing
QoS, QOS
QUE
R
RA
Radio Aspects
RACE
RACE
RACH
RAS
Research and Development in Advanced Communications for Europe
Research in Advanced Communications in Europe
Random Access CHannel
Radio Access System
RBC
RCA
REVC
RF
Radio Bearer Control
Research & Development Centre for Radio Systems
REVerse Charging
Radio Frequency
RFTR
Radio Frequency Transmission and Reception
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Glossary
RIC
Radio Interface performance Group
Radio Local Area Network
RLAN
RLC
Radio Link Control
RMTI
RMUI
RNDu,
RNDT
ROA
RRA
Random Mobile Terminal Identity
Random Mobile User Identity
Random Number (See also RNDT and CHALL)
Random Number (See also RNDu and CHALL)
Recognised Operating Agency (previously RPOA)
Radio Resource Allocation
RRC
RSS
Radio Resource Control
Radio Subsystem
S
S-PCN
SAP
Satellite - PCN
Service Access Point
SAR
Segmentation And Reassembly (sublayer)
Service Control Access Function
Service Creation Environment Function
SCAF
SCEF
SCF
1) Service Control Function
2) Selective Call Forwarding
SCF(M)
SCF-BY/DA
SDCCH
SDF(M)
SEC
Service Control Function (Mobile)
Selective CF on Busy/Don’t Answer
Stand alone Dedicated Control CHannel
Service Data Function (Mobile)
Security screening
SECMOP
SERG
SFMK
SG
SECurity Mechanisms and Operating Procedures
Service Experts Rapporteur Group
Satellite Framework
Security Group
SIM
Subscriber Identity Module
Service Management Function
Special Mobile Group
SMF
SMG
SN
Multiple Subscriber Number
Signalling Network Layer
SNL
SP
Satellite Pager
SPID
FPLMTS Service Provider IDentity
SPM
1) Service Profile Modification
2) Service Profile Management
SPV
SRF
SSC
SSF
SSP
STM
Service Profile Verification
Specialised Resource Function
Satellite Interest Group
Service Switching Function
Service Switching Point
1. Synchronous Transfer Mode
2. Synchronous Transport Module
T
TA
Type Approval
TAA
TADIG
Type Approval Authority
Transfer Accounting Data Interchange Group
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TC
1. Traffic Control
2. Transmission Convergence (sublayer)
Target Cells and Connections
Traffic CHannel
TCC
TCH
TCRTR
TCS
Technical Committee Reference Technical Report
Terminating Call Screening
TDD
TDMA
TDR
TE
Time Division Duplex
Time Division Multiple Access
Time Dependent Routing
1. Terminal Equipment
2. Transit Exchange
TFTS
TIA
Terrestrial Flight Telecommunications System
Telecommunication Industry Association
Telecommunication Information Network Architecture
TRAC Mobile Group
TINA
TMG
TMN
TMTI
TO
Telecommunications Management Network
Temporary Mobile Terminal Identifier
Telecommunication Operator
Technical Regulatory Advisory Committee
Technical Sub-Committee
TRAC
TSC
TT
Traffic Telematics
TWG
Terminal Working Group
U
UAN
UDP
UDR
UIM
Universal Access Number
User Datagramm Protocol
User-Defined Routing
User Identity Module
UMTS
UNI
Universal Mobile Telecommunication System
User Network Interface
UPT
Universal Personal Telecommunications
Universal Personal Telecommunication Number
Universal Subscriber Identity Number
UMTS terrestrial Radio Access
UMTS User Identity
UPTN
USIM
UTRA
UUI
UUM
UUS
UMTS User Mobility
User-to-User Signalling
V
VBR
VC
Variable Bit Rate
Virtual Channel
VHE
VLR
VLSI
VMSC
VOT
VP
Virtual Home Environment
Visitor Location Register
Very Large Scale Integration
Visited Mobile services Switching Center
TeleVOting
Virtual Path
VPI
Virtual Path Identifier
VPLMN
VPN
Visited Public Land Mobile Network
Virtual Private Network
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Glossary
W
WARC
WLL
World Administrative Radio Conference
Wireless Local Loop
WSF
Work Station Function
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Index
A
Non-transparent mode ....................................... 61
Support .............................................................. 63
Transparent mode ............................................. 61
GSM handsets supported ....................................... 8
GSM networks....................................................... 60
GSM statistics ....................................................... 64
GSM web sites ...................................................... 65
About the Internet.................................................. 57
About the Multi-Tech Fax-Back Service ................ 58
Applications supported .......................................... 62
AT commands ....................................................... 30
B
BBS ....................................................................... 56
Bulletin Board System (BBS) ................................ 56
I
C
Internet .................................................................. 57
IWF (Interworking Function) .................................. 60
Cables provided by MultiTech ................................. 8
Cellular phone subscriptions ................................. 12
COM port, selecting .............................................. 27
Commands supported ............................................. 8
Computers supported.............................................. 9
Contacting Tech Support via E-mail ...................... 56
Create a new phonebook ...................................... 24
Create a new phonebook entry ............................. 24
L
License agreement................................................ 16
Limited Warranty ................................................... 55
On-line Warranty Registration ........................... 55
Loading the software
Driver software .................................................. 16
Utility software ................................................... 19
Logging on to Multi-Tech's BBS ............................ 56
D
Data transmission support ...................................... 8
Delete a phonebook .............................................. 24
Delete a record...................................................... 24
M
Multi-Tech BBS...................................................... 56
Multi-Tech fax-back service ................................... 58
Multi-Tech's web site ............................................. 57
MultiMobile SoftGSM
E
Ericsson handsets supported .................................. 8
Error codes
+CME error ........................................................ 45
+CMS error ........................................................ 46
Extended AT commands ....................................... 35
Installing the software ........................................ 16
Introduction .......................................................... 6
Kit contents ........................................................ 12
Registration ....................................................... 18
Related documentation ........................................ 7
Requirements .................................................... 12
Service............................................................... 56
Setup ................................................................. 13
Technical specifications ....................................... 8
Unpacking.......................................................... 12
F
Fax AT commands................................................. 34
Fax-Back Service .................................................. 58
Faxing ................................................................... 61
Frequently asked questions
General .............................................................. 48
Windows 95/98 .................................................. 51
Windows NT ...................................................... 51
N
Nokia handsets supported....................................... 8
Non-transparent mode .......................................... 61
G
O
GSM, background ................................................. 60
GSM data .............................................................. 60
Applications ....................................................... 62
Benefits.............................................................. 61
Faxing ................................................................ 61
On-line Warranty Registration ............................... 55
Operating systems supported ................................. 8
Outgoing SMS messages, coding ......................... 27
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Index
P
W
Phone-to-PC connection ....................................... 13
Phonebook file ...................................................... 27
Phonebook record ................................................. 23
Phonebook Utility
Web site, Multi-Tech .............................................. 57
Write phonebook ................................................... 25
Delete ................................................................ 24
New phonebook ................................................. 24
New record ........................................................ 24
Read phonebook ............................................... 25
Write phonebook................................................ 25
R
Radio Link Protocol (RLP)..................................... 61
Read phonebook ................................................... 25
Recording MultiMobile SoftGSM Information ........ 55
Registering your MultiMobile SoftGSM ................. 18
Result codes ......................................................... 33
S
S-Registers ........................................................... 42
Service .................................................................. 56
Service center ....................................................... 26
Servicing the MultiMobile SoftGSM ....................... 56
Settings information
COM port attached ............................................ 27
Log modemconversation ................................... 28
Phonebook file ................................................... 27
Service center.................................................... 26
Type of outgoing SMS ....................................... 27
Settings, SMS & phonebook ................................. 26
Short Message Service (SMS) .............................. 22
Short message service support............................... 8
Siemens handsets supported .................................. 8
SIM card, defined .................................................. 70
Smart card (SIM card) ........................................... 48
SMS Utility
Receiving SMS messages................................. 22
Sending SMS messages ................................... 23
Standard AT commands ........................................ 30
Storing phone numbers ......................................... 23
T
TDMA (Time Division Multiple Access).................. 63
Tech Support ......................................................... 55
Contacting Tech Support via E-mail................... 56
Recording MultiFRAD Information ..................... 55
Technical specifications........................................... 8
Technical support .................................................. 55
Transparent mode ................................................. 61
Troubleshooting procedures.................................. 52
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