Western Telematic Switch APS 16M User Manual

WTI Part No. 13511  
Rev. B  
APS-8M / APS-16M  
Asynchronous Port Switches  
with Internal Modem  
Firmware Version 4.x  
Models Covered:  
APS-8M  
APS-8M-DC  
APS-16M  
APS-16M-DC  
User’s Guide  
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Warnings and Cautions:  
INSTALLATION INSTRUCTIONS  
Secure Racking  
If Secure Racked units are installed in a closed or multi-unit rack assembly,  
they may require further evaluation by Certification Agencies. The following  
items must be considered.  
1. The ambient within the rack may be greater than room ambient.  
Installation should be such that the amount of air flow required for  
safe operation is not compromised. The maximum temperature for the  
equipment in this environment is 45°C. Consideration should be given to  
the maximum rated ambient.  
2. Installation should be such that a hazardous stability condition is not  
achieved due to uneven loading.  
Input Supply  
1. Check nameplate ratings to assure there is no overloading of supply  
circuits that could have an effect on overcurrent protection and supply  
wiring.  
2. When installing 48 VDC rated equipment, it must be installed only per  
the following conditions:  
A. Connect the equipment to a 48 VDC supply source that is electrically  
isolated from the alternating current source. The 48 VDC source is  
to be connected to a 48 VDC SELV source.  
B. Input wiring to terminal block must be routed and secured in such  
a manner that it is protected from damage and stress. Do not route  
wiring past sharp edges or moving parts.  
C. A readily accessible disconnect device, with a 3 mm minimum  
contact gap, shall be incorporated in the fixed wiring.  
Grounding  
Reliable earthing of this equipment must be maintained. Particular attention  
should be given to supply connections when connecting to power strips, rather  
than direct connections to the branch circuit.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
No Serviceable Parts Inside;  
Authorized Service Personnel Only  
Do not attempt to repair or service this device yourself. Internal components  
must be serviced by authorized personnel only.  
• Shock Hazard - Do Not Enter  
Disconnect Power  
If any of the following events are noted, immediately disconnect the unit from  
the outlet and contact qualified service personnel:  
1. If the power cord becomes frayed or damaged.  
2. If liquid has been spilled into the device or if the device has been exposed  
to rain or water.  
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Table of Contents  
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
2. Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.1. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.2. Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
3. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.1. Hardware Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.2. Connect your Equipment to the Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
3.3. Communicating with the APS-8/16M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
4. Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1. Connecting Power to the APS Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1.1. AC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1.2. DC Powered Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.2. Connect a Telco Line to the Modem Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
4.3. Connecting Devices to the APS Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
5. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.1. Access to the APS-8/16M Command Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.2. System SetUp Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
5.3. Password Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
5.4. The System Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3  
5.4.1. The Password Directory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5  
5.4.2. The Dial Back Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8  
5.5. Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10  
5.5.1. Configuration Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10  
5.5.2. Port Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11  
5.5.3. RS232 Port Configuration Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12  
5.5.4. The Invalid Access Lockout Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17  
5.6. Copying Parameters to All Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18  
5.7. Save User Selected Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19  
6. The Internal Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
6.1. Communicating with the Internal Modem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
6.2. Common AT Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2  
7. The Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.1. The Port Status Screen (/S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.2. The Port Diagnostics Screen (/SD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2  
7.3. The Port Parameters Screens (/W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4  
7.4. The Password Directory Screen (/V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4  
8. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1  
8.1. Any-to-Any Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1  
8.1.1. Port Connection and Disconnection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1  
8.1.2. Defining Hunt Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4  
8.2. Passive Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6  
8.3. Buffer Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6  
8.3.1. Reading Data from Buffer Mode Ports . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7  
8.3.2. Port Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8  
8.4. Modem Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
9. Saving and Restoring Configuration Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1  
9.1. Sending Parameters to a File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1  
9.2. Restoring Saved Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2  
10. Upgrading APS-8/16M Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1  
11. Command Reference Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1  
11.1. Command Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1  
11.2. Command Response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2  
11.3. Command Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3  
11.4. Command Set. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4  
Appendices  
A. RS232 Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1  
B. Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-2  
C. Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-3  
D. Trademark and Copyright Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-4  
E. Regulatory Statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-5  
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Index-1  
List of Figures  
2.1.. . Instrument Front Panel (Model APS-8M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.2.. . Instrument Front Panel (Model APS-16M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.3.. . Instrument Back Panel (Model APS-8M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
2.4.. . Instrument Back Panel (Model APS-16M). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
3.1.. . The Port Status Screen (Model APS-8M Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3  
4.1.. . Terminal Block Assembly (DC Units Only). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
5.1.. . The System Parameters Menu (/F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4  
5.2.. . The Edit Password Directory Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5  
5.3.. . The Add Name/Password Menu (Defaults Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6  
5.4.. . The Edit/Delete Name/Password Menu (Sample Values Shown) . . . . . . . . . . . . . . . . . 5-7  
5.5.. . Port Configuration Menu (Port 1 Shown). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12  
5.6.. . Port Parameters Menu; Modem Mode (Port 3 Shown). . . . . . . . . . . . . . . . . . . . . . . . . 5-14  
5.7.. . The Copy Port Parameters Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18  
7.1.. . The Port Status Screen (Model APS-8M Shown). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1  
7.2.. . The Port Diagnostics Screen (Model APS-8M; Defaults Shown) . . . . . . . . . . . . . . . . . 7-3  
7.3.. . The Port Parameters Screen (Port 1 Shown). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4  
7.4.. . The Password Directory Screen (Sample Values Shown) . . . . . . . . . . . . . . . . . . . . . . . 7-5  
A.1. . RS232 Port Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Apx-1  
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1. Introduction  
WTI’s APS-8M and APS-16M Asynchronous Port Switches allow reliable,  
high-speed connections between PCs, modems, and other devices using  
dissimilar baud rates, parity, and flow control. The APS-8M and APS-16M  
support communication at speeds up to 115.2 Kbps, and feature full RTS/CTS  
hardware handshaking and a 33.6K V.34 internal modem. Lightening-swift  
data throughput and full flow control make the APS-8M and APS-16M the  
perfect data switches for today’s high speed communications applications.  
Versatile Connectivity  
Up to fifteen different devices can be connected to the APS-16M without the  
need to select a common baud rate or parity; up to seven different devices  
can be connected to the APS-8M. Each port can be individually configured  
for specific baud rates, parity, handshaking, and various other parameters and  
options.  
Easy Set-Up and Operation  
Configuration of the APS-8M and APS-16M is simple. A menu system is used  
to select communications parameters, and enable or disable options. The  
APS-8M and APS-16M can easily adapt to the requirements of almost any data  
communications application.  
Password Protected Connection and Command Access  
The APS-8M and APS-16M provide two levels of user security; the Supervisor  
level and the Non-Supervisor level. The Supervisor level, which is intended  
for use by system managers and other administrators, provides complete  
access to all port connection / disconnection functions, operating features and  
configuration menus, and also allows access to any port on the switch. The  
Non-Supervisor level is ideal for collocation applications, since users are only  
permitted to view status and connect to the ports allowed by their password.  
Internal Modem  
The APS-8M and APS-16M feature 33.6K v.34 Internal modems; allowing  
easy, convenient out-of-band access to configuration and control functions.  
Non-Volatile Memory  
If power to the unit is lost or interrupted, the units' non-volatile memory will  
retain user-defined parameters and port connections.  
1-1  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
Modem Communication  
The APS-8M and APS-16M can both be controlled by a local PC that  
communicates with the unit via cable, or controlled remotely via external  
modem. Hyperterminal (or another communications program) is used to send  
commands to connect ports or display status.  
Configuration Backup  
Once you have configured the APS-8M or APS-16M to fit your application,  
parameters and options can be saved to an ASCII text file on your PC. This  
allows you to quickly restore user-selected parameters if the unit configuration  
is accidentally altered or deleted. Saved parameters can also be uploaded to  
other APS-8M or APS-16M units. This allows rapid set-up when several units  
will be configured with identical or similar parameters.  
APS-8M and APS-16M Units  
This User's Guide discusses both the APS-8M and APS-16M. Throughout  
this User's Guide, both units are referred to as "APS-8/16M." The APS-8M  
includes seven RS232 ports and an internal modem, and the APS-16M includes  
sixteen RS232 ports and an internal modem. All other features function  
identically.  
Typographic Conventions  
Throughout this manual, typefaces and characters have been used to denote the  
following:  
^(e.g. ^X)  
Indicates a control character. For example, the text  
"^X" (Control X) indicates the [Ctrl] key and the  
[X] key must be pressed simultaneously.  
COURIER FONT Indicates characters typed on the keyboard.  
For example, /Eor /P 02.  
[Bold Font]  
Text set in bold face and enclosed in square brackets,  
indicates a specific key. For example, [Enter] or [Esc].  
< >  
Indicates required keyboard entries.  
For Example: /P <n>.  
[ ]  
Indicates optional keyboard entries.  
For Example: /W [n].  
1-2  
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2. Unit Description  
2.1. Front Panel  
Figure 2.1: Instrument Front Panel (Model APS-8M)  
Figure 2.2: Instrument Front Panel (Model APS-16M)  
CLEAR: Restarts the APS-8/16M operating program without changing  
user-selected parameter settings or breaking port connections.  
ON: Lights when AC Power is applied.  
SET: Used to Initialize the APS-8/16M to factory defaults. To initialize,  
press and hold both the SET and CLEAR buttons, release only the  
CLEAR button, and then release the SET button.  
Notes:  
• During initialization, all port LEDs will flash ON for approximately  
one half second.  
• During initialization, all command-selected parameters will be  
cleared, and the APS will revert to default parameters.  
RDY: Flashes when unit is ready to receive commands.  
DCD: (APS-16M Only) Lights when Data Carrier Detect signal is  
present.  
ACTIVITY LEDs: Light when corresponding port is receiving data.  
Note that the APS-8M includes eight Activity LEDs and the APS-16M  
includes sixteen Activity LEDs.  
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2.2. Back Panel  
Figure 2.3: Instrument Back Panel (Model APS-8M)  
Figure 2.4: Instrument Back Panel (Model APS-16M)  
Power Cable Receptacle: AC powered units only. DC units include a  
terminal block assembly as described in Section 4.1.2.  
Power Switch  
Modem Port (Line Port): For connection to your phone line. For  
information regarding modem configuration, please refer to Section 6.  
RS232 PORTS: For connection to RS232 console ports on user devices.  
The APS-8M includes seven RS232 Ports, and the APS-16M includes  
sixteen RS232 Ports. For more information, please refer to Section  
4.3 (connection instructions), Appendix A (interface description), and  
Section 5.2 (Setup Ports).  
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3. Getting Started  
This Quick Start Guide describes a simplified installation procedure for the  
APS-8M and APS-16M hardware, which will allow you to communicate with  
the unit in order to demonstrate basic features and check for proper operation.  
Note that this Quick Start Guide does not provide a detailed description of  
unit configuration, or discuss advanced operating features in detail. In order  
to take full advantage of the complete range of features provided by this unit,  
it is strongly recommended that you review the Installation and Configuration  
sections of this User's Guide after completing this Quick Start procedure.  
3.1. Hardware Installation  
3.1.1.  
Apply Power to the APS-8/16M  
Refer to the power rating nameplate on the APS-8/16M back panel, and then  
connect the unit to an appropriate power source. Set the Master Power Switch  
on the APS-8/16M back panel to the ON position.  
3.1.2.  
Connect your Telco Line to the APS-8/16M  
Connect your phone line to the Line Port (Modem Port), located on the  
APS-8/16M back panel. It is recommended to use a direct, dedicated POTS  
line for connection to the Modem Port. Note that the APS-8M sees the Modem  
Port as Port 8, and the APS-16M sees the Modem Port as Port 17.  
3.1.3.  
Connect a PC to the APS-8/16M  
Use a standard null modem cable (provided with the unit) to connect your PC  
COM port to the Port 1 connector on the APS-8/16M back panel.  
3.2. Connect your Equipment to the Serial Ports  
Use an appropriate DB9 cable to connect the RS232 Serial Port on your  
equipment to the desired Serial Port on the APS-8/16M  
PCs and other DTE Devices: Use a standard null modem cable.  
External Modems and other DCE devices: Use a standard serial  
modem cable.  
3-1  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
3.3. Communicating with the APS-8/16M  
The APS-8/16M command mode allows you to check unit status, change  
configuration parameters and connect and disconnect ports (including the  
Modem Port.)  
1. Access Command Mode:  
a) Via Local PC: Start your communications program and then  
press [Enter]. The "APS>" command prompt should appear.  
c) Via Modem: Use your communications program to dial the number  
for the phone line which is connected to the internal modem. A  
Password Prompt will be displayed. If you have not previously  
defined the Supervisor Password, just press [Enter], without typing a  
password. The "APS>" command prompt should be displayed.  
Notes:  
• If a password that permits access to Supervisor Mode has been  
previously defined, a prompt will be displayed. Key in a Supervisor  
Level password, and press [Enter]. If a Supervisor Level password  
has not yet been defined, the prompt will not be displayed.  
• When the APS-8/16M is shipped from the factory, communications  
parameters are set as follows: 9600 bps, RTS/CTS Handshaking,  
8 Data Bits, One Stop Bit, No Parity. Although these parameters  
can be easily redefined, for this Quick Start procedure, it is  
recommended to configure your communications program to accept  
the default parameters.  
2. Review the Help Menu: At the "APS>" Command Prompt, type /Hand  
press [Enter] to display the Help Menu, which provides a basic listing of  
all APS-8/16M commands.  
3. Port Status Screen: Type /Sand press [Enter] to display the Port Status  
Screen (Figure 3.1), which summarizes conditions at all APS-8/16M  
ports.  
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Getting Started  
PORT STATUS: APS-M, Version 3.0, Site ID: (undefined)  
PORT |  
NAME  
| CMD ACCESS | STATUS | MODE | BUFFER COUNT  
-----+------------------+------------+--------+--------+--------------  
01 | (undefined)  
02 | (undefined)  
03 | (undefined)  
04 | (undefined)  
05 | (undefined)  
06 | (undefined)  
07 | (undefined)  
08 | Internal_Modem  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
|
|
|
|
|
|
|
0
0
0
0
0
0
0
| Unlocked | Free | Modem |  
0
Enter /H for command menu.  
APS>  
Figure 3.1: The Port Status Screen (Model APS-8M Shown)  
4. Creating Connections Between Ports: The APS-8/16M can perform  
two different types of port connections; Resident Connections and Third  
Party Connections.  
a) Resident Connection: Your resident port (e.g. Port 1) issues a /C  
command to connect to a second port.  
i. To connect Port 1 to Port 2, type /C 2 [Enter]. While Port 1  
is connected, the APS-8/16M will not recognize commands  
issued at Port 1. However, the unit will recognize a Resident  
Disconnect Sequence issued at Port 1 or Port 2.  
ii. Issue the Resident Disconnect Sequence (Logoff Sequence);  
type ^X(press [Ctrl] and [X] at the same time).  
b) Third Party Connection: Your resident port (e.g. Port 1) issues a  
/C command to create a connection between two other ports.  
i. To connect Port 2 to Port 3, type /C 2 3 [Enter].  
ii. While Ports 2 and 3 are connected, Port 1 will still recognize  
APS commands. Type /S [Enter] to display the Port Status  
Screen. The "STATUS" column should now list Ports 2 and 3  
as connected, and Port 1 as "Free".  
iii. Issue a Third Party Disconnect command to disconnect Ports 2  
and 3; type /D 2 [Enter]. The unit will display the "Are you  
Sure (y/n)?" prompt. Type yand press [Enter] to disconnect.  
iv. Type /S [Enter] to display the Port Status Screen. The  
"STATUS" column should now list Ports 2 and 3 as "Free".  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
5. Exit Command Mode: At the "APS>" command prompt, type /Xand  
press [Enter]. The APS-8/16M will exit command mode.  
This completes the Quick Start Guide for the APS-8/16M. Prior to placing the  
unit into operation, please proceed to Sections 4 and 5 for complete installation  
and configuration procedures.  
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4. Hardware Installation  
4.1. Connecting Power to the APS Unit  
The APS-8/16M is available in both AC and DC powered versions. When  
connecting power, proceed as follows:  
CAUTION:  
• Before attempting to install this unit, please review the warnings  
and cautions listed at the front of the user's guide.  
• This device should only be operated with the type of power  
source indicated on the instrument nameplate. If you are not  
sure of the type of power service available, please contact your  
local power company.  
4.1.1.  
AC Powered Units  
Plug the power cable (supplied with the unit) into the receptacle on the back  
panel, and then connect the power cable to an appropriate, grounded outlet.  
The APS features a self adjusting power supply that automatically adapts to  
power supplies between 100 and 240 VAC. Press the Power Switch ON. The  
ON LED should light and the RDY LED should begin to flash.  
4.1.2.  
DC Powered Units  
The DC terminal block features two bus inputs as shown in Figure 4.1. This  
allows the user to connect only one DC power source, or connect two DC  
power sources where the second source serves as a backup. When connecting  
the APS-8/16M to your DC power source, first remove the protective cover  
from the terminal block, attach the wires from the -48V DC power source to  
the screw terminals, connect your ground line to the labeled ground screw, and  
then replace the protective cover.  
Figure 4.1: Terminal Block Assembly (DC Units Only)  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
4.2. Connect a Telco Line to the Modem Port  
Use a standard RJ-11 cable to connect your Telco outlet to the Modem (Line)  
Port, located on the APS-8/16M back panel. Note that the APS-8M sees  
the internal modem as Port 8, and the APS-16M sees the internal modem as  
Port 17.  
4.3. Connecting Devices to the APS Serial Ports  
The serial RS232 Ports are standard DB9 connectors, configured as DTE Ports,  
and are similar to a standard serial port on a PC. The APS-8M includes seven  
serial RS232 ports, and the APS-16M includes sixteen serial RS232 ports. For  
a detailed description of the RS232 Port interface, please refer to Appendix A.  
1. Access the APS-8/16M command mode.  
2. Determine which RS232 port will be used for connection to the new  
device (e.g. Port 3).  
3. Use an appropriate DB9 cable to connect the RS232 serial port on the  
device to the selected DB9 port on the APS-8/16M.  
a) External Modems and other DCE Devices: Use a standard serial  
modem cable.  
b) PCs and other DTE Devices: Use a standard null modem cable.  
5. Select communication parameters for the port as described in Section 5.  
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5. Configuration  
5.1. Access to the APS-8/16M Command Mode  
When the APS-8/16M command mode is active, commands can be invoked to  
select parameters, and connect or disconnect ports.  
Note:  
• Command mode cannot be accessed from a Buffer Mode Port,  
Passive Mode Port, or any port that is currently connected to another  
APS-8/16M port.  
• Configuration commands are not available at any port where the  
Supervisor Mode has been disabled.  
• Supervisor Mode commands can only be invoked by users who have  
logged in using a password that permits access to Supervisor Mode.  
1. Start your communications program (e.g. HyperTerminal, TeraTerm, etc.).  
Make certain that the communications program is set to match the default  
APS-8/16M parameters: 9600 bps, 8-Data Bits, 1-Stop Bit, No Parity,  
RTS/CTS (hardware) handshaking.  
2. Access command mode.  
a) Local Access: To access command mode from a local PC that is  
connected to the APS-8/16M via cable, press [Enter].  
i. There must be no other characters preceding [Enter]. If you  
have already hit other keys, press [Enter] twice.  
ii. If a password that permits Supervisor Mode has been previously  
defined, the password prompt will be displayed. Key in a  
password that permits Supervisor Mode and press [Enter].  
b) Modem Access: To access the command mode via modem, proceed  
as follows:  
i. Dial the number for the APS-8/16M’s internal modem, or (if  
present) an external modem connected to one of the  
APS-8/16M’s RS232 ports.  
ii. If a password that permits Supervisor Mode has been previously  
defined, the password prompt will be displayed. Key in a  
password that permits Supervisor Mode and press [Enter].  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
5.2. System SetUp Ports  
Ports 1 and 2 are designated as System SetUp Ports, and will therefore, always  
permit password protected access to Supervisor Mode.  
In order to ensure that access to command functions is always available, Ports  
1 and 2 cannot be configured as Buffer Mode or Passive Mode Ports (Buffer  
Mode Ports and Passive Mode Ports are not able to access command mode.) In  
addition, Ports 1 and 2 always permit password protected access to Supervisor  
Mode; the Supervisor Mode cannot be disabled at either of these two ports.  
5.3. Password Functions  
The APS-8/16M’s password directory allows you to define up to 32 different  
passwords. These passwords are not only used to protect access to the  
APS-8/16M unit, but are also used to determine the type of commands that  
each user will be allowed to invoke, and the ports that each user will be  
allowed to connect. This is accomplished by either granting or denying each  
password’s access to Supervisor Mode and specifying permitted ports via the  
Password Directory.  
Passwords that have been granted access to Supervisor Mode are allowed to  
change configuration parameters and may connect to any APS-8/16M port. On  
the other hand, passwords which are denied access to Supervisor Mode are  
not allowed to change configuration parameters, and are restricted to the ports  
specifically allowed by that password. Therefore, the password entered during  
login determines whether or not you will be able to invoke Supervisor Mode  
commands, and also determines which ports you will be allowed to connect  
to. Note that the password directory feature is described in greater detail in  
Section 5.4.1.  
Note that once you have defined at least one password that permits access to  
Supervisor Mode, the APS-8/16M will display a password prompt whenever  
you attempt to access command mode. If a valid password, which allows  
access to Supervisor Mode is entered, the APS-8/16M will then start up  
in Supervisor Mode. Supervisor Level commands are summarized in  
Section 11.3 of this User’s Guide.  
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Configuration  
Notes:  
• If you do not define at least one password that permits access  
to Supervisor Mode, then Supervisor Level commands will be  
available to all ports, and port access and configuration functions  
will not be password protected.  
• If you wish to restrict users from changing APS-8/16M  
configuration parameters or connecting to restricted ports, you must  
define at least one password that permits access to Supervisor Mode  
as described in Section 5.4.1.  
• If the unit is reset to default parameters, all passwords will be  
erased, and Supervisor Level commands will be available at all  
ports, without password protection.  
Normally, passwords that permit access to Supervisor Mode can be entered at  
any port in order to gain access to Supervisor command functions. Note that  
if you wish to completely deny a port’s access to Supervisor Mode (even with  
a Supervisor Password), the Port Parameters menus (/P) can be used to disable  
the Supervisor Mode at any RS232 Port except for ports 1 and 2 (the System  
SetUp Ports.) The Supervisor Mode cannot be disabled at System SetUp  
Ports 1 and 2.  
5.4. The System Parameters Menu  
Before configuring individual ports, the System Parameters should be defined.  
The System Parameters Menu (/F) allows you to set the Site ID Message,  
enable/disable the Password on Dial Back Function, set the number of Dial  
Back Attempts, set the Dial Back Delay Value, and access the menus which are  
used to define passwords and access rights. All parameters that are defined via  
the System Parameters Menu are global, and will be applied to all  
APS-8/16M ports.  
Notes:  
• The Site ID message cannot include double quotes.  
• Both the Site ID and Password Directory will be cleared if the  
APS-8/16M is initialized to default settings.  
• The System Parameters Menu is only available in Supervisor Mode.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
SYSTEM PARAMETERS:  
1. Site-ID:  
(undefined)  
2. Password on Dial Back:  
3. Dial Back Attempts:  
4. Dial Back Delay:  
5. Edit Password Directory  
Off  
3
30 Secs  
Enter: #<CR> to change,  
<ESC> exit ...  
Figure 5.1: The System Parameters Menu (/F)  
To define System Parameters, you must first access command mode, and then  
type /F [Enter] to display the System Parameters Menu (Figure 5.1.) The  
System Parameters Menu allows you to define the following:  
1. Site ID: Type 1and press [Enter], a prompt will appear. Key in the  
desired text and press [Enter]. The Site ID will be listed on the status and  
diagnostic screens. (Up to 32 chars.; Default = undefined.)  
2. Password on Dial Back: Enables/Disables the "Password on Dial Back"  
feature as described in Section 5.4.2. (Default = Off.)  
3. Dial Back Attempts: Sets the number of times that the APS-8/16M  
will attempt to call the dial back number when the Dial Back feature is  
properly configured and enabled. For more information on the Dial Back  
feature, please refer to Section 5.4.2. (Default = 3.)  
4. Dial Back Delay: Sets the amount of time that will elapse between Dial  
Back Attempts. For more information on the Dial Back Feature, please  
refer to Section 5.4.2. (Default = 30 Seconds.)  
5. Edit Password Directory: Provides access to a series of menus that are  
used to create, edit, and delete APS-8/16M passwords as described in  
Section 5.4.1.  
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Configuration  
EDIT PASSWORD DIRECTORY:  
1. Add Name/Password  
2. Edit/Delete from List  
3. Edit/Delete from Search  
4. Delete Entire Directory  
Enter: #<CR> to select,  
<ESC> for previous menu ...  
Figure 5.2: The Edit Password Directory Menu  
5.4.1.  
The Password Directory  
APS-8/16M passwords are defined using the "Edit Password Directory"  
menu, which is accessed via the System Parameters menu (/F). In addition  
to assigning command level privileges to each password, the Edit Password  
Directory function also allows you to determine which ports each password  
will be allowed to access, and includes prompts that are used to configure  
several Dial Back parameters. The Password Directory allows for the  
definition of up to 32 separate passwords.  
Note:  
• The Edit Password Directory menu is only available to users who  
have logged into command mode using a password that permits  
access to Supervisor Mode.  
• The /V command can also be issued to view the Password Directory.  
To activate the Edit Password Directory menu, you must first access the  
command mode, and then type /Fand press [Enter] to display the System  
Parameters Menu. At the System Parameters Menu, type 5and press [Enter]  
to display the Edit Password Directory menu (Figure 5.2.) The Edit Password  
Directory Menu offers the following options:  
1. Add Name/Password: Creates new passwords and assigns Supervisor  
Mode access and port access rights as described in Section 5.4.1.1.  
2. Edit/Delete from List: Edits/Deletes passwords. The desired password  
is selected by scrolling through a list of all passwords as described in  
Section 5.4.1.2.  
3. Edit/Delete from Search: Edits/Deletes passwords. The desired  
password is selected using a search function as described in  
Section 5.4.1.2.  
4. Delete Entire Directory: Clears the password directory, and deletes all  
existing passwords as described in Section 5.4.1.3.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
ADD NAME/PASSWORD:  
1. Name:  
2. Password:  
3. Dial Back #:  
(undefined)  
(undefined)  
(undefined)  
4. Dial Back Mode: Off  
5. Supervisor Mode: Off  
6. Port Access:  
7. Save Entry  
None  
Enter: #<CR> to select,  
<ESC> for previous menu ...  
Figure 5.3: The Add Name/Password Menu (Defaults Shown)  
5.4.1.1. Adding Passwords  
The "Add Name/Password" menu is used to create new user accounts  
and add passwords to the password directory. To access the Add Name/  
Passwords menu, activate the Edit Password Directory Menu as described in  
Section 5.4.2, then type 1and press [Enter]. The Add Name/Password menu  
will be displayed as shown in Figure 5.3. The Add Name/Password Menu  
allows you to assign the following parameters:  
1. Name: Assigns a username to the password. Note that usernames are not  
required when logging into command mode, and are used for descriptive  
purposes only.  
2. Password: After keying in the password, the unit will prompt you to  
verify the password by re-keying it.  
3. Dial Back #: Defines the number that the APS-8/16M will dial when the  
Dial Back feature is enabled and the unit is contacted via modem. For  
more information on the Dial Back Mode, please refer to Section 5.4.2.  
4. Dial Back Mode: Enables/Disables the Dial Back Mode for this  
password. For more information on the Dial Back Mode, please refer to  
Section 5.4.2.  
5. Supervisor Mode: Enables/Disables Supervisor Mode for this password.  
When Supervisor Mode is enabled, the password will provide access  
to all configuration menus, and allow connections to all ports. When  
Supervisor Mode is disabled, the password will not permit access to  
configuration menus, and will only allow access to ports specifically  
permitted by the password definition.  
Note: In order to access Supervisor Mode from any given port,  
the port at which the password is issued must also permit Supervisor  
Commands.  
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Configuration  
EDIT/DELETE NAME/PASSWORD:  
1. Name:  
test  
2. Password:  
3. Dial Back #:  
(defined)  
5556789  
4. Dial Back Mode: On  
5. Supervisor Mode: On  
6. Port Access:  
7. Save Entry  
1, 2, 3, 4, 5, 6, 7, 8  
8. Delete Entry  
Type: “<”<Enter> previous entry, “>”<Enter> next entry,  
<number><Enter> to selection,  
<ESC> to abort ...  
Figure 5.4: The Edit/Delete Name/Password Menu (Sample Values Shown)  
6. Port Access: The ports that this password will be allowed to create  
connections with. Note that several passwords can provide access to  
the same port. To select ports, type 6, press [Enter] and follow the  
instructions in the resulting submenu.  
7. Save Entry: Note that if you exit from the menu without first saving, the  
password will not be saved.  
5.4.1.2. Editing and Deleting Passwords:  
The Edit Password Directory Menu (Figure 5.2) provides two different  
methods for selecting the password you wish to edit or delete; passwords  
can either be selected by scrolling through the password list, or by using a  
search routine. To edit or delete existing passwords, access the Edit Password  
Directory menu and proceed as follows:  
1. Select the account that you wish to edit or delete:  
a) From List: To find the desired password from a list of all  
passwords, type 2, press [Enter], then follow the instructions in the  
resulting submenu.  
b) From Search: To search for a specific password, type 3, press  
[Enter], then follow the instructions in the resulting submenu.  
2. Edit Password: After finding the desired password, the "Edit/Delete  
Name/Password" Menu (Figure 5.4) will be displayed. Items 1 through 6  
are used to select and change parameters, and function identically to the  
corresponding items in the Add Name/Password menu. Item 7 is used to  
save the edited password and parameters. Note that if you exit from the  
menu without first saving, newly selected parameters will be discarded.  
3. Delete Password: After finding the desired password, the "Edit/Delete  
Name/Password" Menu will be displayed. To delete the password, type 8  
and press [Enter].  
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5.4.1.3. Deleting the Entire Password Directory  
The Edit Password Directory menu (Figure 5.2) also allows you to delete the  
entire password directory, rather than accessing each individual password  
and deleting them one at a time. To delete the Password Directory and clear  
all passwords, activate the "Edit Password Directory" Menu as describe in  
Section 5.4.1, type 4and press [Enter]. The unit will then display a "Sure?"  
prompt and wait for confirmation before proceeding.  
Notes:  
• Deleted passwords cannot be recovered.  
• If the Password Directory is deleted, the password prompt will no  
longer be displayed, and users will be able to access Supervisor  
Mode without a password. In order to restrict access to Supervisor  
commands, you must define at least one password that permits  
access to Supervisor Mode.  
5.4.2.  
The Dial Back Function  
The Dial Back Function provides an additional layer of security when callers  
attempt to access command mode via modem. When this function is properly  
configured, callers will not be granted immediate access to command mode  
upon entering a valid password; instead, the unit will disconnect, and dial a  
user-defined number before allowing access via that number. If desired, users  
may also be required to re-enter the password after the APS-8/16M dials back.  
Note that a separate Dial Back Number can be defined for each password, and  
the feature may also be independently enabled for each password. To enable  
this function, proceed as follows:  
1. Access command mode using a port and password that permit Supervisor  
Mode. At the command prompt, type /Fand press [Enter] to display the  
System Parameters menu.  
2. System Parameters Menu: Note that dial back parameters selected  
via this menu are global, and will apply to all passwords. Define the  
following parameters:  
Item 2, Password on Dial Back: (Optional) Determines whether or  
not the Dial Back Mode will require the answering party to re-enter  
their password after a Dial Back is performed.  
Item 3, Dial Back Attempts: The number of times the APS-8/16M  
will attempt to call the dial back number.  
Item 4, Dial Back Delay: The amount of time the APS-8/16M will  
wait between Dial Back attempts.  
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Configuration  
3. Edit Password Directory: From the System Parameters Menu, type  
5and press [Enter] to display the Edit Password Directory Menu. At  
this point, you may either define new passwords that use the Dial Back  
Function, or alter existing passwords to include the Dial Back Function.  
The following parameters should be defined in the Add Name/Password  
Menu or Edit/Delete Password/Name Menu:  
Item 3, Dial Back #: The number that will be called when a Dial Back  
is performed. This is the number for the password owner’s modem.  
• Item 4, Dial Back Mode: Enables/Disables the Dial Back function for  
this password. When enabled, this password will require a dial back to  
be performed whenever this password user attempts to access the unit  
via modem.  
Note: In order for new parameters to be applied, you must save each  
password before leaving the menu.  
Dial Back Example:  
Assume that the unit is configured as follows:  
System Parameters Menu:  
• Item 2, Password on Dial Back: On  
• Item 3, Dial Back Attempts: 3  
• Item 4, Dial Back Delay: 30 Seconds  
Add Name/Password Menu:  
• Item 1, Name: Test  
• Item 2, Password: test  
• Item 3, Dial Back #: 5551234  
• Item 4, Dial Back Mode: On  
Given this configuration, the unit would behave as follows :  
1. Password "test" Entered at Modem Port: Unit confirms that password  
is valid, then disconnects.  
2. Dial Back: Unit dials "555-1234" (the Dial Back Number for "test") and  
waits for the user’s remote modem to answer.  
3. Password on Dialback: When the modem at the Dial Back Number  
answers, the APS-8/16M will prompt the user to enter the password  
before allowing access to command mode.  
4. Dial Back Attempts and Delays: If the modem does not answer, the unit  
will then attempt to redial the number three times (Dial Back Attempts),  
and will pause for approximately 30 seconds (Dial Back Delay) between  
each redial.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
5.5. Port Configuration  
5.5.1.  
Configuration Conventions  
When responding to prompts, invoking commands, and selecting items from  
port configuration menus, note the following:  
• To select an item from a Port Configuration menu, key in the number for  
the item and press [Enter].  
• To clear an item in a Port Configuration menu, enter the number for the  
desired item and press [Enter]. When the prompt appears, press [Space]  
and then press [Enter].  
• When defining the Port Name, do not use the forward slash character (/),  
double quotes ("), the asterisk character (*), or blank spaces.  
• Port Names cannot begin with a number.  
• Refer to the instructions in each screen for additional functions available  
under that screen.  
• To exit a menu or prompt without changing its current value, press [Esc].  
• Passwords are case sensitive. When defining passwords, note the exact  
text, including the case of each character.  
• If you are configuring the APS-8/16M unit via modem, communication  
parameters will not be changed until after you exit from command mode  
and disconnect from the APS-8/16M unit.  
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Configuration  
5.5.2.  
Port Modes  
The APS-8/16M offers four different port operation modes; Any-to-Any Mode,  
Passive Mode, Buffer Mode, and Modem Mode. The Port Modes function as  
follows:  
Any-to-Any Mode: Allows communication between connected ports.  
Any-to-Any Mode Ports can be connected to other Any-to-Any, Passive,  
Buffer, or Modem Mode Ports by accessing command mode and invoking  
the /C command (see Section 8.1.1). The Any-to-Any Mode is available  
to all APS-8/16M ports, except the Internal Modem Port (The Internal  
Modem Port is Port 8 on the APS-8M, and Port 17 on the APS-16M.)  
Passive Mode: Allows communication between connected ports, but  
does not allow access to command mode. Passive Mode Ports can be  
connected by accessing command mode from a free Any-to-Any or  
Modem Mode port and invoking the /C command (see Section 8.1.1).  
The Passive Mode is not available to Ports 1 and 2, or the Internal Modem  
Port (The Internal Modem Port is Port 8 on the APS-8M, and Port 17 on  
the APS-16M.)  
Buffer Mode: Allows collection and storage of data received from  
connected devices. Collected data can be retrieved by accessing  
command mode from a free Any-to-Any or Modem Mode Port, and  
issuing the Connect Command (/C.) Note that the Buffer Mode also  
allows pass-through communication with the connected device. The  
Buffer Mode is not available to Ports 1 and 2, or the Internal Modem Port  
(The Internal Modem Port is Port 8 on the APS-8M, and Port 17 on the  
APS-16M.)  
Modem Mode: A Modem Mode port can perform all functions normally  
available in Any-to-Any Mode, but the Modem Mode also allows  
definition of a Hang-Up String, Reset String, and Initialization String.  
Any APS-8/16M RS232 port can be configured for Modem Mode, and the  
Internal Modem port is always configured for Modem Mode.  
For more information on Port Modes, please refer to Section 8.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
PORT PARAMETERS #01:  
1. Port Name:  
(undefined)  
2. Baud Rate:  
9600  
3. Bits/Parity:  
8-None  
4. Stop Bits:  
1
5. Handshake Mode:  
6. Port Mode:  
RTS/CTS  
Any-to-Any  
64. DTR Output:  
Pulse  
7. Supervisor Mode:  
8. Logoff Character:  
9. Sequence Disconnect:  
10. Timeout Disconnect:  
11. Response Type:  
12. Command Echo:  
13. Accept Break:  
Permit  
^X  
One Character Only  
Off  
Verbose  
On  
Yes  
14. Invalid Access Lockout: Off  
Enter: “<” previous port,  
“>” next port,  
<ESC> exit ...  
Figure 5.5: Port Configuration Menu (Port 1 Shown)  
5.5.3.  
RS232 Port Configuration Menus  
The Port Configuration Menus are used to select options for each of the  
APS-8/16M’s RS232 ports. Parameters selected via these menus will stay in  
effect until the unit is initialized or the /P command is used to reconfigure the  
port. After initialization, parameters will revert to the defaults specified by the  
SetUp Switches.  
To select port parameters, proceed as follows:  
1. Access command mode. If the password prompt is displayed, key in a  
password that permits Supervisor Mode.  
2. Type /P, followed by the number of the port to be configured, and press  
[Enter]. For example, to configure Port 1, type /P 1 [Enter]. The Port  
Configuration menu will appear as shown in Figure 5.5.  
a) If the /P Command is entered without the port number  
(e.g. /P [Enter]), the configuration menu for your resident port  
will be displayed.  
b) The /P command is only available to passwords that permit access to  
Supervisor Mode.  
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Configuration  
The Port Configuration menu offers the following options:  
1. Port Name: (Up to 16 characters) Assigns a name to the port.  
• (APS-8M Defaults: Ports 1 through 7 = undefined;  
Port 8 = "Internal_Modem").  
• (APS-16M Defaults: Ports 1 through 16 = undefined;  
Port 17 = "Internal_Modem").  
2. Baud Rate: Selects the baud rate for the port. Can be set to any standard  
rate from 300 bps to 115.2K bps. (Default = 9600 bps)  
3. Bits/Parity: (Default = 8-None).  
4. Stop Bits: (Default = 1).  
5. Handshake Mode: Selects the handshake format for this port; XON/  
XOFF, RTS/CTS (hardware), Both, or None. (Default = RTS/CTS).  
6. Port Mode: Defines the operation mode for this port. (Default: Ports 1  
through 7 = Any-to-Any Mode; Port 8 = Modem Mode).  
Notes:  
• Ports 1 and 2 cannot be configured as Passive Mode or Buffer Mode  
ports.  
• The Internal Modem Port is always configured for Modem Mode,  
and cannot be set to Any-to-Any, Buffer, or Passive Mode.  
When Any-to-Any, Passive, or Buffer Mode is selected, the unit will  
display the DTR Output prompt (item 64) as shown in Figure 5.5. The  
DTR Output prompt is not displayed when Modem Mode is selected.  
64. DTR Output: Determines how DTR will react when this port  
disconnects. DTR can be held low, held high, or pulsed for 0.5  
seconds and then held high. In the default state, DTR will pulse  
for 0.5 seconds and then remain high. For more information on  
hardware lines, please refer to Appendix A. (Default = Pulse).  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
PORT PARAMETERS #03:  
1. Port Name:  
(undefined)  
2. Baud Rate:  
9600  
3. Bits/Parity:  
8-None  
4. Stop Bits:  
1
5. Handshake Mode:  
6. Port Mode:  
RTS/CTS  
Modem  
61. Reset String:  
62. Init String:  
63. Hang-Up String:  
7. Supervisor Mode:  
8. Logoff Character:  
9. Sequence Disconnect:  
10. Timeout Disconnect:  
11. Response Type:  
12. Command Echo:  
13. Accept Break:  
ATZ  
AT&C1&D2S0=1  
(undefined)  
Permit  
^X  
One Character Only  
15 Min  
Verbose  
On  
Yes  
14. Invalid Access Lockout: Off  
Enter: “<” previous port,  
“>” next port,  
<ESC> exit ...  
Figure 5.6: Port Parameters Menu; Modem Mode (Port 3 Shown)  
When the Port Mode is set to Modem Mode, the menu will include  
additional prompts (see Figure 5.6), which are used to define the  
following:  
61. Reset String: If necessary, this prompt can re-define the modem  
reset string, which is sent prior to the Initialization string. (Up to 48  
Chars., Default = ATZ).  
62. Initialization String: Defines a command string that can be sent to  
initialize a modem to settings required by your application. (Up to  
48 Characters, Defaults: Port 1 through 7 = AT&C1$D2S0=1;  
Port 8 =ATM0&C1$D2S0=1).  
63. Hang-Up String: Although the APS-8/16M will pulse the DTR line  
to hang-up an attached modem, the Hang-Up string is often useful  
for controlling modems that do not use the DTR line. (Up to 48  
Characters, Default = undefined).  
Notes:  
• When communicating with the APS-8/16M via modem,  
communication parameters will not be changed until you exit from  
command mode and discontinue the modem connection to the unit.  
• For a list of basic AT commands for the Internal Modem, please  
refer to Section 6. For a complete listing of all available AT  
commands and S-Registers, please refer to the "MT5634 Modem AT  
Command Set" document in our User’s Guide Archive at the WTI  
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Configuration  
7. Supervisor Mode: Permits or denies access to Supervisor Mode at this  
port. When enabled (Permit), and a password that permits Supervisor  
Mode is entered, the port will allow access to Supervisor Mode  
commands. When disabled (Deny), the port will not enter Supervisor  
Mode, even when a password that normally permits access to Supervisor  
Mode is entered. (Default = Permit).  
Note: The Supervisor Mode cannot be disabled at Ports 1 or 2.  
8. Logoff Character: Defines the Logoff Character for this port. The  
Logoff Character determines the command(s) or character(s) that must  
be issued at this port in order to disconnect from a second port (Resident  
Disconnect). (Default = ^X([Ctrl] plus [X])).  
Note: When redefining the Logoff Character, make certain to select a  
character that does not normally occur in your data.  
9. Sequence Disconnect: Enables/Disables and configures the Resident  
Disconnect command. This prompt offers the option to either disable the  
Sequence Disconnect, or select a one character format or a three character  
format. (Default = One Character). Note the following:  
• When a Resident Connection is initiated, the APS-8/16M will send a  
message which lists the connected ports, and displays the one character  
or three character command that will be required in order to disconnect.  
• The One Character Disconnect sequence is intended for situations  
where the destination port will not receive the disconnect command.  
When the Three Character format is selected, the disconnect sequence  
will pass through to the destination port prior to breaking the  
connection.  
• When the One Character format is selected, resident connections are  
terminated by entering the selected Logoff Character only. There is no  
need to press [Enter] before and after the Logoff Character when the  
One Character format is selected.  
• When the Three Character format is selected, the Resident Disconnect  
Sequence will use the format "[Enter]LLL[Enter]", where Lis the  
selected Logoff Character.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
10. Timeout Disconnect: Enables and selects the Timeout Period for this  
port. If enabled, and the port does not receive or transmit data for the  
specified Timeout Period, the port will disconnect. In Any-to-Any Mode,  
Passive Mode, or Buffer Mode, the default setting for this item is "OFF".  
When the port is set for Modem Mode, the default setting for this item is  
15 minutes.  
Notes:  
• The Timeout Disconnect is also applied to non-connected ports that  
are left in command mode. If no additional data activity is detected,  
an unconnected port will exit from command mode when the  
Timeout Disconnect value expires.  
• When connected ports time out and are disconnected, both ports will  
also exit from command mode.  
11. Response Type: Selects the type of messages that this port will send in  
response to commands. The user can select Verbose (English Text), Terse  
(Numeric / Abbreviation), or Quiet Mode (No Response).  
(Default = Verbose).  
12. Command Echo: Enables or Disables the command echo for this port.  
(Default = On).  
13. Accept Break: Determines whether the port will accept breaks received  
from the attached device, and pass them along to a connected port. When  
enabled, breaks received at this port will be passed to any port that this  
port is connected to, and sent along to the device connected to the other  
port. When disabled, breaks will be refused at this port, and hence, not  
sent to the other port. (Default = Yes)  
14. Invalid Access Lockout: Enables/Disables the Invalid Access Lockout  
feature as described in Section 5.5.4. Briefly, the Invalid Access Lockout  
feature can be used to automatically disable a port when a user-defined  
number of invalid access attempts are detected. (Default = Off.)  
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Configuration  
5.5.4.  
The Invalid Access Lockout Feature  
When properly configured and enabled, the Invalid Access Lockout feature  
will watch all login attempts made at a given port. If the port exceeds the  
selected number of invalid attempts, then that port will be automatically  
disabled for a user-defined length of time.  
Note that when an Invalid Access Lockout occurs, you can either wait for the  
Lockout Duration period to elapse, or issue the /UL command to instantly  
unlock all ports.  
Note: The Invalid Access Lockout feature can be individually  
enabled/disabled at each port.  
The Invalid Access Lockout Feature is configured and enabled using the  
Port Parameters Menu for the desired port. When "Invalid Access Lockout"  
is selected, the APS-8/16M will display a submenu which allows you to  
configure the following parameters:  
1. Lockout Access: Enables/Disables Invalid Access Lockout at this port.  
2. Lockout Attempts: The number of invalid access attempts required to  
trigger the Invalid Access Lockout feature.  
3. Lockout Duration: The length of time that ports will remained locked  
when an Invalid Access Lockout occurs. Note that if the duration is set to  
"0", the port will remained locked until the /UL command is issued.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
COPY PORT PARAMETERS:  
1. Port Name:  
2. Baud Rate:  
3. Bits/Parity:  
4. Stop Bits:  
5. Handshake Mode:  
6. Port Mode:  
64. DTR Output:  
7. Supervisor Mode:  
8. Logoff Character:  
9. Sequence Disconnect:  
10. Timeout Disconnect:  
11. Response Type:  
12. Command Echo:  
13. Accept Break:  
14. Invalid Access Lockout:  
(Note: ports 1 & 2 will NOT have restricted values changed.)  
Enter: parameter # <CR> to define parameter value to copy to all ports,  
-<CR> to remove all values set,  
X<CR> to exit WITHOUT copy,  
<ESC> to copy to ports and exit ...  
Figure 5.7: The Copy Port Parameters Menu  
5.6. Copying Parameters to All Ports  
The /CP command (Copy Port Parameters) provides a convenient means for  
selecting similar parameters for all APS-8/16M RS232 ports.  
When the /CP command is invoked, the unit will display a menu which allows  
you to select port communication parameters, then copy them to all  
APS-8/16M RS232 ports. The Copy Port Parameters menu can be used to set  
all parameters for all RS-232 Ports, or define only a select group of parameters  
and then copy them to all ports.  
Notes:  
• The /CP command is only available in Supervisor Mode.  
• The /CP command cannot be used to set Ports 1 and 2 to Passive  
Mode or Buffer Mode (Port Mode, Item 6.)  
• The /CP command cannot be used to disable the Supervisor Mode at  
Ports 1 and 2 (Supervisor Mode, Item 7.)  
• The /CP command cannot be used to change the Port Mode for  
the Internal Modem Port. The Internal Modem Port is always  
configured for Modem Mode.  
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Configuration  
To select common parameters for all APS-8/16M RS-232 ports, proceed as  
follows:  
1. Access command mode. If the password prompt is displayed, key in a  
password that permits Supervisor Mode.  
2. At the command prompt, type /CPand press [Enter], the menu shown in  
Figure 5.7 will be displayed.  
3. Selecting Parameters: To select parameters to be copied, key in  
the number for the desired parameter, press [Enter], then follow the  
instructions in the submenu. Note that it is not necessary to define all port  
parameters, for example, the /CP command could be used to select only  
the Baud Rate for all ports.  
4. Clear Menu: After defining several parameters, if you wish to clear the  
/CP menu and start again, type -(dash) and press [Enter], the menu will  
be reset.  
5. Exit Without Copy: To exit from the Copy Parameters menu without  
copying selected parameters to all RS232 ports, type Xand then press  
[Enter]. The APS-8/16M will exit from the Copy Parameters menu and  
return to the command prompt.  
6. Copy Parameters: When you have finished selecting parameters, press  
[Esc] to copy the selected parameters to all APS-8/16M RS-232 Ports and  
exit from the Copy Port Parameters menu. Note that the APS-8/16M will  
display a "Sure" prompt before copying parameters to other ports.  
5.7. Save User Selected Parameters  
Although this step is optional, it is strongly recommended to save all user-  
defined parameters to an ASCII file. This will allow quick recovery in the  
event of accidental deletion or reconfiguration of port parameters. Section 9  
describes the procedure for saving configuration parameters to an ASCII file.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
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6. The Internal Modem  
This section lists commonly used AT commands for the APS-8/16M’s internal  
modem, and briefly describes the procedure for communicating with the  
internal modem. Please note that although APS-8/16M includes an internal  
modem, any APS-8/16M RS232 port can also be configured for connection to  
an external modem.  
6.1. Communicating with the Internal Modem  
To communicate with the APS-8/16M’s internal modem, proceed as follows:  
1. Access the APS-8/16M command mode as described in Section 5.1.  
Notes:  
• If you log on to the APS-8/16M using a password that does not  
permit Supervisor Mode, then you will only be able to connect to  
the Internal Modem Port if your password allows access to that port.  
Passwords that permit Supervisor Mode will always allow access to  
all ports.  
• To access the internal modem’s command mode from a remote  
location, you must first dial into an external modem installed at one  
of the other RS232 ports, and then proceed as described below. The  
internal modem’s command mode cannot be accessed via a remote  
connection to the internal modem.  
2. When the APS> command prompt appears, type /C 8and press [Enter]  
to connect to the Internal Modem Port (Port 8 on the APS-8M, or Port 17  
on the APS-16M).  
3. When the connection is established, the APS-8/16M will respond with a  
connect message that lists the port number or name and currently selected  
disconnect command.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
6.2. Common AT Commands  
This section lists some of the most commonly used AT commands for the  
APS-8/16M’s internal modem. For a complete listing of all available  
AT Commands and S-Registers, please refer to the "MT5634 Modem AT  
Notes:  
• Type commands in either upper or lower case. Do not use a  
combination of upper and lower case characters.  
• Use the Backspace key to delete errors.  
• All commands begin with the AT prefix, and are invoked by  
pressing [Enter]. The only exceptions are A/(Repeat Previous  
Command) and +++(Exit to on-line command mode).  
• The maximum command length is 40 characters. This does not  
include the AT Prefix, Carriage Returns, or spaces.  
• Default settings are marked with an asterisk (*).  
Command  
Function/Options  
Zn  
Reset Modem. Resets modem parameters to default values.  
Z0  
Reset modem to profile saved by the last  
&W command.  
Z1  
Same as Z0  
Ds  
Dials telephone number s. Where s may be up to 40 characters  
long and may include the numbers 0-9, *, #, B, C, and D  
characters and the L, P, T, V, W, S, comma (,), semicolon (;), !,  
@, ^ and $ dial string modifiers.  
Dial String Modifiers:  
L
Redial last number. (Must be placed immediately  
after ATD.)  
P
T
W
Pulse-dial following numbers in command line.  
Tone Dial following numbers in command line.  
Wait for a new dial tone before continuing to dial  
(X2, X4, X5, X6 or X7 must be selected.)  
(Comma) Pause during dialing for time set in  
Register S8.  
,
;
Return to command mode after dialing.  
(Place at end of dial string.)  
!
Hook Flash. Causes modem to go on-hook for  
one half second, then off hook again.  
@
Wait for quiet answer. Causes modem to wait for a  
ringback, then 5 seconds of silence, before processing  
the next part of the command. If silence is not detected,  
the modem returns a NO ANSWER code.  
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The Internal Modem  
Command  
Function/Options  
&Dn  
Data Terminal Ready (DTR) Control.  
&D0 Modem ignores true status of DTR signal and responds  
as if it is always on.  
&D1 If DTR drops while in online data mode, the modem  
enters command mode, issues an OK, and  
remains connected.  
*
&D2 If DTR drops while in online data mode, the modem  
hangs up. If the signal is not present, the modem will  
not answer or dial.  
&D3 If DTR drops, the modem hangs up and resets as if an  
ATZ command had been issued.  
En  
Set Modem Command Mode Echo.  
E0  
E1  
Disable echoing of command mode characters.  
Enable echoing of command mode characters.  
*
&Wn  
Store Current Modem Configuration.  
&W0 Stores current modem settings in non-volatile memory  
and causes them to be loaded instead of the factory  
defaults at power-on or when the ATZ command  
is invoked.  
*
&W1 Clears user default settings from non-volatile memory  
and causes the factory defaults to be loaded at power-on  
or following the ATZ command.  
+++AT In-band Escape Sequence. Puts the modem in command mode  
(and optionally issues a command) while remaining online. Type  
+++ATand up to six optional command characters; then press  
[Enter]. Used mostly to issue the hangup command:  
+++ATT<CR>.  
&Qn  
Asynchronous Communications Mode.  
&Q0 Asynchronous with data buffering. Same as /N0.  
*
&Q5 Error control with data buffering. Same as /N3.  
&Q6 Asynchronous with data buffering. Same as /N0.  
&Q8 MNP error control mode. If MNP error control is not  
established, the modem falls back according to the  
setting in Register S36.  
&Q9 V.42 or MNP error control mode. If neither error  
control method is established, the modem falls back  
according to the setting in Register S36.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
Command  
Function/Options  
In  
Information Request  
I0  
I1  
I2  
Display default speed and controller firmware version.  
Calculate and display ROM checksum (e.g., 12AB.)  
Check ROM and verify the checksum, displaying  
OK or ERROR  
I3  
I4  
I5  
Display default speed and controller firmware version.  
Display firmware version for data pump (e.g., 94.)  
Display the board ID: software version, hardware  
version, and country ID.  
I9  
Display the country code.  
I11  
Display diagnostic information for the last modem  
connection, such as link type, line speed, type of error  
correction / data compression, number of  
past retrains, etc.  
&En  
XON/XOFF Pacing Control.  
*
&E12 Disables XON/XOFF pacing.  
&E13 Enables XON/XOFF pacing.  
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7. The Status Screens  
The APS-8/16M Status Screens display the connection status and  
communication parameters for the RS-232 ports. Basically, There are four  
different status screens; The Port Status screen (/S), the Port Diagnostics screen  
(/SD), the Port Parameters screens (/W), and the View Password Directory  
screen.  
7.1. The Port Status Screen (/S)  
The Port Status Screen lists the general status of the RS-232 ports. To display  
the Port Status Screen, access the command mode and type /S [Enter], the  
screen will appear as shown in Figure 7.1.  
Although the Port Status Screen can be displayed by passwords that permit  
Supervisor Mode and passwords that do not permit Supervisor Mode, note  
that the resulting screen will appear slightly different, depending upon the  
Supervisor Mode access rights of the port and password that invoked the /S  
command. When the /S command is invoked by a user who does not have  
access to Supervisor Mode, the Port Status Screen will only display the status  
of those ports that are specifically allowed for the password entered at log in.  
PORT STATUS: APS-M, Version 3.0, Site ID: (undefined)  
PORT |  
NAME  
| CMD ACCESS | STATUS | MODE | BUFFER COUNT  
-----+------------------+------------+--------+--------+--------------  
01 | (undefined)  
02 | (undefined)  
03 | (undefined)  
04 | (undefined)  
05 | (undefined)  
06 | (undefined)  
07 | (undefined)  
08 | Internal_Modem  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
| Unlocked | Free | Any  
|
|
|
|
|
|
|
0
0
0
0
0
0
0
0
| Unlocked | Free | Modem |  
Enter /H for command menu.  
APS>  
Figure 7.1: The Port Status Screen (Model APS-8M Shown)  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
As shown in Figure 7.1, The Port Status Screen lists the following:  
Name: The user-defined name for each port.  
Command Access: Indicates if the corresponding port has been disabled  
by the Invalid Access Lockout feature. If this column reads "Locked",  
then the defined number of invalid access attempts for this port has been  
exceeded, and the port has been locked in order to prevent further access  
attempts. To unlock a port, you must either issue the /UL command to  
unlock all ports, or wait for the port’s user-defined Lockout Duration  
period to elapse.  
Status: The connect status of each port. When the port is connected, this  
column will list the number of the other APS-8/16M port connected to  
this port.  
Mode: The user-selected Port Mode. This column will read Any (Any-  
to-Any), Modem, Passive, or Buffer, depending on the configuration  
selected for the port.  
Buffer Count: Lists the amount of data (in bytes) stored in the buffer for  
this port.  
7.2. The Port Diagnostics Screen (/SD)  
The Port Diagnostics Screen provides more detailed information about  
each port, including most communication parameters. To display the Port  
Diagnostics Screen, access the command mode and type /SD [Enter], the  
screen will appear as shown in Figure 7.2.  
Like the Port Status Screen, the Port Diagnostics Screen is also available in  
both Supervisor Mode and non-Supervisor Mode. Note however, that if the  
Port Diagnostics Screen command (/SD) is invoked by a password or port that  
does not permit Supervisor Mode, then the resulting screen will only display  
status of the ports that are specifically allowed by the password entered  
at log in.  
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The Status Screens  
PORT DIAGNOSTICS: APS-M, Version 3.0, Site ID: (undefined)  
PORT |  
NAME  
| STATUS | BAUD | COM | HS | MODE | BUF | CTS  
-----+------------------+--------+--------+-----+------+--------+-------+----  
01 | (undefined)  
02 | (undefined)  
03 | (undefined)  
04 | (undefined)  
05 | (undefined)  
06 | (undefined)  
07 | (undefined)  
08 | Internal_Modem  
| *Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
| Free | 9600 | 8N1 | RTS | Any  
|
|
|
|
|
|
|
0 | H  
0 | H  
0 | L  
0 | L  
0 | L  
0 | L  
0 | L  
0 | H  
| Free | 9600 | 8N1 | RTS | Modem |  
Enter /H for command menu.  
APS>  
Figure 7.2: The Port Diagnostics Screen (Model APS-8M; Defaults Shown)  
As shown in Figure 7.2, the Port Diagnostics Screen lists the following:  
Port: The Port Number.  
Name: The user-defined name for each port.  
Status: The connect status for each port. When the port is connected,  
this column will list the number of the other port that is connected to this  
port. Note that if this column contains an asterisk, this indicates that the  
port has accessed command mode.  
Baud: The baud rate selected for each port.  
COM: The Data Bits, Parity, and Stop Bits selected for each port. For  
example, "8N1" indicates Eight data bits, No parity, and One stop bit.  
HS: The handshaking (flow control) mode for each port.  
Mode: The user-selected Port Mode. This column will read Any (Any-  
to-Any), Modem, Passive, or Buffer, depending on the configuration  
selected for each port.  
BUF: Lists the amount of data (in bytes) currently stored in the buffer for  
this port.  
CTS: The High/Low status of the CTS line at the RS232 interface.  
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PORT PARAMETERS #01:  
1. Port Name:  
(undefined)  
2. Baud Rate:  
9600  
3. Bits/Parity:  
8-None  
4. Stop Bits:  
1
5. Handshake Mode:  
6. Port Mode:  
RTS/CTS  
Any-to-Any  
64. DTR Output:  
Pulse  
7. Supervisor Mode:  
8. Logoff Character:  
9. Sequence Disconnect:  
10. Timeout Disconnect:  
11. Response Type:  
12. Command Echo:  
13. Accept Break:  
Permit  
^X  
One Character Only  
Off  
Verbose  
On  
Yes  
14. Invalid Access Lockout: Off  
APS>  
Figure 7.3: The Port Parameters Screen (Port 1 Shown)  
7.3. The Port Parameters Screens (/W)  
The /W command displays more detailed information about an individual  
APS-8/16M port. Rather than listing connection information for all ports like  
the Port Status Screens, the Port Parameters screen lists all defined parameters  
for a specific port as shown in Figure 7.3.  
The /W command is available to both Supervisor Mode and Non-Supervisor  
Mode ports and passwords. Note however, that if the /W command is invoked  
by a port or password that does not permit access to Supervisor Mode, then the  
APS-8/16M will only display information for your resident port.  
7.4. The Password Directory Screen (/V)  
The Password Directory Screen (Figure 7.4) lists currently defined parameters  
for each of the APS-8/16M passwords. Note that the Password Directory  
screen will not display actual passwords, and instead, will only indicate  
whether or not a password has been defined for each username.  
The Password Directory Screen is only available when the Supervisor Mode  
is active, and cannot be displayed by ports or passwords that do not permit  
Supervisor Access. The APS-8/16M allows for the definition of up to 32  
separate passwords.  
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The Status Screens  
Name  
Password  
Dial Back #  
DB SA  
-------------------------------------------------------------------------------  
admin  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
(defined)  
5556789  
On On  
Off Off  
Off On  
On Off  
Off Off  
Off Off  
On Off  
On Off  
Off Off  
On On  
drafting  
engineering  
finance  
(undefined)  
(undefined)  
5559900  
(undefined)  
(undefined)  
5551234  
5559876  
5554321  
5556789  
hr  
manufacturing  
marketing  
sales  
service  
test  
Reached End of Directory.  
APS>  
Figure 7.4: The Password Directory Screen (Sample Values Shown)  
As shown in Figure 7.4, the Password Directory Screen lists the following:  
Name: The username for each password. Note that the username is not  
entered during login, and is used for descriptive purposes only.  
Password: If a password has been defined for the corresponding  
username, this column will read "defined"  
Dial Back Number: The number that will be called if the Dial Back  
Function is enabled for this password, and the user attempts to access  
the APS-8/16M via modem. For more information on the Dial Back  
Function, please refer to Section 5.4.2.  
DB (Dial Back): Indicates whether or not the Dial Back Function is  
enabled. This column will read "On" if the Dial Back function has been  
enabled for the corresponding password.  
SA (Supervisor Access): Indicates whether or not the password will  
provide access to the Supervisor Mode. This column will read "On" if the  
corresponding password has been granted permission to access Supervisor  
Mode.  
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8. Operation  
8.1. Any-to-Any Mode  
Any-to-Any Mode Ports can be connected to other Any-to-Any, Passive,  
Buffer, or Modem Mode Ports by accessing command mode and issuing the /C  
Command. All ports can be configured for the Any-to-Any Mode.  
8.1.1.  
Port Connection and Disconnection  
The APS-8/16M provides communication between devices without the  
requirement that both devices use the same communication parameters. This  
allows you to connect devices that use dissimilar baud rates, parity, handshake,  
and etc. The APS-8/16M converts data rates and other parameters, eliminating  
the need to select common parameters for all connected devices.  
8.1.1.1. Connecting Ports  
Two different types of connections can be made between APS-8/16M ports;  
Resident Connections and Third Party Connections.  
Resident Connections: Your resident port issues a /C command to  
connect to a second port. For example, Port 4 issues the /C command to  
connect to Port 5.  
Third Party Connections: (Supervisor Mode Only) Your resident port  
issues a /C command to create a connection between two other ports. For  
example, Port 1 is your resident port, and Port 1 issues a command to  
connect Port 2 to Port 3.  
Notes:  
• Third Party Connections can only be initiated by ports and  
passwords that permit access to Supervisor Mode.  
• If a port has accessed command mode using a password that does  
not permit Supervisor Mode, then that port will only be able to  
connect to the ports that are specifically allowed by the password  
definition.  
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To connect ports, proceed as follows:  
1. Access command mode as described in Section 5.1. If the Password  
Prompt is displayed, enter a password that permits Supervisor Mode.  
2. Invoke the /C command to connect the desired ports.  
a) Resident Connect: To connect your resident port to another port,  
type /C xx [Enter]. Where xxis the number or name of the port  
you want to connect. The APS-8/16M will display the numbers of  
the connected ports, along with the command sequence that will be  
required in order to disconnect the two ports.  
Example: To connect your resident port to Port 8, type  
/C 8 [Enter].  
b) Third Party Connect: (Supervisor Mode Only) To connect any  
two ports (other than your resident port), type /C xx XX [Enter].  
Where xxand XXare two port names or numbers. The APS-8/16M  
will display the numbers of the two connected ports.  
Example: To connect Port 5 to Port 6, access command mode using  
a password and port that permit Supervisor Mode, and then invoke  
the following command: /C 5 6 [Enter].  
When the /C command specifies the port name, it is only necessary to enter  
enough letters to differentiate the desired port from other ports. Type an  
asterisk (*) to represent the remaining characters in the port name. For  
example, to connect your resident port to a port named "SALES", the connect  
command can be invoked as /C S*, providing no other port names begin with  
the letter "S".  
8.1.1.2. Disconnecting Ports  
There are three different methods for disconnecting ports, the Resident  
Disconnect, the Third Party Disconnect, and the No Activity Timeout.  
Providing the Timeout feature is enabled, a No Activity Timeout will  
disconnect resident ports or third party ports.  
Note: When Any-to-Any Mode, Buffer Mode, or Passive Mode are  
selected, Option 64 in the Port Parameters Menu determines how the  
DTR signal will react when the port disconnects. The DTR signal can  
either be held low, held high, or pulsed and then held high.  
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Operation  
To disconnect ports, proceed as follows:  
1. Resident Disconnect: Disconnects your resident port from another  
port. For example, if you are communicating via Port 3, and Port 3 is  
connected to Port 4, a Resident Disconnect would be used to disassociate  
the two ports. The APS-8/16M offers two different Resident Disconnect  
command formats; the One Character Format and the Three Character  
Format (for more information, please refer to Section 5.5.3.):  
a) One Character (Default): When the One Character Disconnect  
Sequence is selected, simply enter the selected Logoff Character  
once (Default = ^X([Ctrl] plus [X])). Note that it is not necessary  
to enter a carriage return before or after the Logoff Character.  
b) Three Characters: Uses the format [Enter]LLL[Enter], where  
Lis the Logoff Character. For example, if the Logoff Character  
is "+", then the three character disconnect sequence would be  
[Enter]+++[Enter].  
c) If the default Resident Disconnect Sequence is not compatible with  
your application, both the command format and Logoff Character  
can be redefined via the Port Configuration menus, as described in  
Section 5.5.3.  
2. Third Party Disconnect: (Supervisor Mode Only) The /D command is  
issued from your resident port to disconnect two third party ports. For  
example, if your Resident Port is Port 1, a Third Party Disconnect could  
disconnect Port 3 from Port 4.  
a) The /D command uses the format: /D xx XX [Enter], where xx  
and XXare the numbers of the ports that you wish to disconnect.  
b) The /D (Disconnect) command can only be invoked by a port that  
permits Supervisor Mode.  
c) The /D command can specify both connected ports, or either of the  
two ports. For example, if Port 1 is your resident port, any of the  
following commands can be used to disconnect Port 3 from Port 4:  
/D 3 4 [Enter]  
or  
/D 3 [Enter]  
or  
/D 4 [Enter]  
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3. No Activity Timeout: Providing the Timeout Disconnect feature is  
enabled at either connected port, a No Activity Timeout can disconnect  
Resident Ports, or Third Party Ports.  
a) RS232 Ports: To configure the Timeout Disconnect Feature  
for the RS232 Ports, invoke the /P command to display the  
Port Configuration Menu for the desired port as described in  
Section 5.5.3. Option 10 enables and defines the Timeout  
Disconnect Feature.  
b) When the Timeout Disconnect Feature is enabled, the port will  
automatically disconnect if no data is received for the defined  
Timeout Period.  
Notes:  
• When connected ports time out, both ports will exit command mode  
after disconnecting.  
• When an unconnected port is left in command mode and no  
additional data activity is detected, the port will automatically exit  
command mode when its defined timeout value elapses.  
8.1.2.  
Defining Hunt Groups  
A Hunt Group creates a situation where the APS-8/16M will scan a group of  
ports and connect to the first available port in the group. Hunt Groups are  
created by assigning identical or similar names to two or more ports. Hunt  
Groups can be defined using Any-to-Any, Passive, Buffer, or Modem Mode  
Ports.  
1. Access command mode. If the password prompt is displayed, key in a  
password that permits Supervisor Mode.  
2. Invoke the /P command to access the Port Configuration Menu for the  
desired Port(s). For example, to configure Port 4, type /P 4 [Enter].  
3. From the Port Configuration Menu, select item 1 to define the Port Name.  
4. Repeat steps 2 and 3 above to assign identical names to the other ports  
in the Hunt Group. For example, a series of ports in a group could all be  
named "SERVER".  
5. To connect to the next available port in the hunt group, invoke the /C  
command using the port name to specify the desired group. For example,  
/C SERVER [Enter].  
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Operation  
6. Your port will be connected to the first available port in the group. If  
all ports are presently connected, the APS-8/16M will respond with a  
"BUSY" message.  
7. It is only necessary to enter enough letters of the port name to  
differentiate Hunt Group ports from other ports. Type an asterisk (*) to  
represent the remaining characters in the port name. For example, to  
connect your resident port to the first available port in a group of ports  
named "SALES1", "SALES2", and "SALES3", the connect command can  
be invoked as /C S* [Enter], providing no other port names begin with  
the letter "S".  
Hunt Group port names must be unique. Otherwise, ports with similar names  
will also be included in the Hunt Group.  
Hunt Group Example 1:  
1. Ports 1 and 2 are configured as Modem Mode ports, and external modems  
are installed at both ports. Port 1 is named "MODEM1" and Port 2 is  
named "MODEM2".  
2. Your resident port is Port 4. To connect to the first available external  
Modem, access command mode and type /C MODEM* [Enter].  
Hunt Group Example 2:  
1. Ports 3, 4, and 5 are Any-to-Any Mode ports. All three ports are named  
"SERVER".  
2. Your resident port is Port 1, and you want to connect Port 2 to the first  
available server, access command mode and type  
/C 2 SERVER [Enter].  
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8.2. Passive Mode  
Passive Mode Ports function the same as Any-to-Any Mode Ports, but do not  
allow access to command mode. A Passive Mode Port can communicate with  
other ports, but cannot enter command mode, and therefore cannot invoke  
commands to redefine port parameters, display status, and etc.  
Passive Mode Ports can be connected by accessing command mode from a  
free Any-to-Any Mode or Modem Mode Port, and invoking the Third Party  
Connect or Resident Connect Command as described in Section 8.1.1. Passive  
Mode ports will not buffer data, except during baud rate conversion.  
Notes:  
• A Passive Mode Port is not allowed to access command mode.  
• In order to ensure supervisor access to important command  
functions, the Passive Mode is not available to Ports 1 and 2  
(SetUp Ports).  
• The Internal Modem Port cannot be configured as a Passive Mode  
Port. On the APS-8M, Port 8 is the Internal Modem Port, and on the  
APS-16M, Port 17 is the Internal Modem Port.  
8.3. Buffer Mode  
Ports configured as Buffer Mode ports will collect data from the connected  
device and store it in the APS’s statically allocated memory. Each port features  
a fixed length, fixed position data buffer.  
The Buffer Mode allows collection of data from various devices without the  
requirement that all devices use the same communication parameters (e.g. baud  
rate, parity, etc.).  
Notes:  
• Buffer Mode Ports cannot access command mode.  
• In order to ensure supervisor access to important command  
functions, the Buffer Mode is not available to Ports 1 and 2  
(SetUp Ports).  
• The Internal Modem Port cannot be configured as a Buffer Mode  
Port. On the APS-8M, Port 8 is the Internal Modem Port, and on the  
APS-16M, Port 17 is the Internal Modem Port.  
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Operation  
8.3.1.  
Reading Data from Buffer Mode Ports  
To retrieve data from Buffer Mode Ports, you must first determine which port  
buffers contain data. To check port buffers for stored data, access command  
mode and type /S [Enter] to display the Port Status Screen.  
To retrieve data from buffer memory, go to a free Any-to-Any or Modem Mode  
Port, access command mode (Supervisor Mode), and issue the /C command  
using the following format:  
/C xx [Enter]  
Where xxis the number or name of the port buffer to be read.  
If the port’s buffer is empty, the APS-8/16M will send a message which reads  
"Connected xx, Buffer Empty"; where "xx" is the port number. If the buffer  
contains data, the APS-8/16M will display a prompt that offers four options:  
Next Screen: To scroll through data one screen at a time, press the [Space] bar.  
Each time the space bar is pressed, the next full screen of data will be sent.  
Scroll All: To send all data without pausing, press [1].  
Skip/Connect: To connect to the buffer port without sending stored data,  
press [2].  
Erase/Connect: To connect to the buffer port and erase stored data,  
press [3]. Note that buffered data will be erased immediately and will not  
be sent.  
Note: All four of these options also allow pass-through  
communication with the device connected to the Buffer Mode port.  
To clear data from the buffer, use the Erase/Connect option, or go to a free  
Any-to-Any or Modem Mode Port with Supervisor Mode capability, and issue  
the /E (Erase Buffer) command using the following format:  
/E xx [Enter]  
Where xxis the number or name of the port buffer to be cleared.  
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8.3.2.  
Port Buffers  
The Status Screen lists the amount of Buffer Memory currently used by each  
port. The APS-8/16M uses buffer memory in two different ways, depending  
on the user-selected port mode.  
Any-to-Any, Passive, and Modem Mode Ports: When two ports are  
communicating at dissimilar baud rates, the buffer memory prevents data  
overflow at the slower port.  
Buffer Mode Ports: Stores data received from connected devices.  
The user issues a connect command (/C) from an Any-to-Any Mode or  
Modem Mode port to retrieve data.  
If the Status Screen indicates an accumulation of data, the /E (Erase Buffer)  
command can be invoked to clear the buffer.  
8.4. Modem Mode  
In addition to allowing data transfer, the Modem Mode also provides  
additional functions specifically related to modem communication. A Modem  
Mode Port can perform all functions normally available in Any-to-Any Mode.  
The Modem Mode is available to all RS232 ports. In addition to allowing  
configuration of the internal modem, the Modem Mode also simplifies the  
process of connecting an external modem to the RS232 Ports.  
Note: The Internal Modem Port is always configured for the modem  
mode. The Internal Modem Port cannot be configured as an Any-to-  
Any Mode, Buffer Mode or Passive Mode port.  
When the Modem Mode is selected, the port configuration menu (command  
/P) will display three additional prompts, which allow the user to re-define  
the modem reset string, initialization string, and hang-up string. When  
Modem Mode is selected for a port that permits Supervisor Mode, you should  
also define at least one password that permits Supervisor Mode in order to  
discourage unauthorized access to higher command functions.  
Normally, when a call is received, the unit will prompt the caller to enter a  
password. The APS-8/16M allows three attempts to enter a valid password.  
If the correct password is not entered in three attempts, or if the user does  
not respond to the password prompt within 30 seconds, the modem will  
disconnect. Passwords are defined by invoking the /F command as described  
in Section 5.4.  
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Operation  
Notes:  
• When a Modem Mode Port exits command mode, or the DCD line  
is lost while command mode is active, the APS-8/16M will pulse the  
DTR line to the modem. The unit will then send the user-defined  
modem command strings to make certain the modem is properly  
disconnected and reinitialized.  
• All APS-8/16M RS232 ports can use both the unit’s internal modem  
and external modem(s) installed at another RS232 port, providing  
that the port password allows access to the desired modem port. To  
call out, invoke the /C command to connect to the port, and then  
access the modem as you normally would.  
• If desired, the Invalid Access Lockout Feature can be configured to  
completely shut down a port after a user-defined number of invalid  
access attempts are detected. For more information on the Invalid  
Access Lockout Feature, please refer to Section 5.5.4.  
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9. Saving and Restoring  
Configuration Parameters  
After the APS-8/16M has been properly configured, parameters can be  
downloaded and saved as an ASCII text file. Later, if the configuration is  
accidentally altered, the file with the saved parameters can be uploaded to  
automatically reconfigure the unit without the need to manually re-assign  
each parameter.  
Saved parameters can also be uploaded to other identical APS-8/16M units.  
This allows rapid set-up when several units will be configured with the same  
parameters, providing that units are the same model (APS-8M or APS-16M)  
and are using the same APS-8/16M firmware version.  
The "Save Parameters" procedure can be performed from any communications  
program (e.g. HyperTerminal, ProComm, Crosstalk, etc.), that allows  
downloading of ASCII files.  
9.1. Sending Parameters to a File  
1. Start your communications program and access the APS-8/16M command  
mode. If the password prompt is displayed, enter a password that permits  
access to Supervisor Mode.  
2. When the APS command prompt appears, type /Uand press [Enter].  
The APS-8/16M will prompt you to configure your communications  
program to receive an ASCII download.  
a) Set your communications program to receive an ASCII format  
download, and the specify a name for a file that will receive the  
saved parameters (e.g. APS8M.PAR).  
b) Disable the Line Wrap function for your terminal emulation  
program. This will prevent command lines from being broken in two  
during transmission.  
3. When the communications program is ready to receive the file, return to  
the APS-8/16M’s Save Parameter File menu, and press [Enter] to proceed  
with the download. APS-8/16M parameters will be saved on your hard  
drive in the file specified in Step 2 above.  
4. The APS-8/16M will send a series of ASCII command lines which specify  
the currently selected APS-8/16M parameters. The last line of the file  
should end with a "/G-00" command. When the download is complete,  
press [Enter] to return to the "APS>" command prompt.  
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9.2. Restoring Saved Parameters  
This section describes the procedure for using your communications program  
to send stored parameters to the APS-8/16M.  
1. Start your communications program and access the APS-8/16M command  
mode; if the password prompt is displayed, enter a password that permits  
access to Supervisor Mode.  
2. Configure your communications program to upload an ASCII text file.  
3. Upload the ASCII text file with the saved APS-8/16M parameters. If  
necessary, key in the file name and directory path.  
4. Your communications program will send the specified ASCII text file to  
the APS-8/16M. When the communications program is finished with the  
upload, make certain to terminate the Upload mode.  
Note: If the APS-8/16M detects an error in the parameters file, it will  
respond with the "Invalid Parameter" message. If an error message is  
received, carefully check the contents of the parameters file, correct the  
problem, and then repeat the upload procedure.  
5. If the parameter upload procedure is successful, the APS-8/16M will  
send a confirmation message, and then return to the "APS>" command  
prompt. Type /Sand press [Enter], the APS-8/16M Status Screen will  
be displayed. Check the Status Screen to make certain the unit has been  
configured with the saved  
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10. Upgrading APS-8/16M Firmware  
When new, improved versions of the APS-8/16M operating firmware become  
available, the /UF (Upgrade Firmware) function can be used to update the  
APS-8/16M unit to the new firmware version. Updates can be uploaded to the  
unit via SetUp Ports one and two, or via the Internal Modem Port. To install a  
firmware update, proceed as follows:  
Note: All other ports will be disabled during the firmware upgrade  
procedure.  
1. Obtain the update file. Firmware modifications can either be mailed to  
the customer on a 3.5" diskette or CDROM, or downloaded from WTI via  
modem. Place the diskette in your diskette drive and/or copy the file to  
your hard drive.  
2. Access the APS-8/16M command mode. If the password prompt is  
displayed, key a password that permits Supervisor Mode. The Upgrade  
Firmware feature is only available in Supervisor Mode.  
3. When the APS-8/16M command prompt appears, type /UFand then press  
[Enter]. The APS-8/16M will display a screen which offers the  
following options:  
a) Continue Upload and Keep Current Parameters: To proceed  
with the upgrade, while retaining current, user-defined parameters,  
type 1and press [Enter]. All parameter settings will be restored  
when the upgrade is complete.  
b) Continue Upload and Default System: To proceed with the  
upgrade, and reset parameters to default settings, type 2and press  
[Enter]. When the upgrade is complete, all parameters will be set to  
default values. Note that if the Firmware Upgrade is performed via  
modem, Modem Port parameters will not be defaulted until after you  
hang-up and disconnect from the unit.  
c) Abort Upload: To cancel the upgrade and return to the command  
prompt, type 3and press [Enter].  
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4. Use your communication program’s (e.g. HyperTerminal’s) upload  
function to transfer the upgrade firmware to the unit. Select ASCII file  
format, and then specify the filename and directory location where the  
firmware upgrade file resides.  
Note: The Upload function will time-out after one minute of  
inactivity. If the function times out, type 1and press [Enter] to  
continue, or press [Esc] to abort.  
5. If the upload is successful, the APS-8/16M will prompt the user to  
continue the upgrade or abort.  
a) Upgrade: To continue with the upgrade, type 1and press [Enter].  
APS-8/16M will erase the previous firmware, move new firmware  
from data flash to program flash memory, calculate and store the  
new checksum, and reboot. Do not attempt to reconnect to the  
APS-8/16M until the RDY indicator blinks to indicate the process is  
complete.  
Note: Do not turn off power to the APS-8/16M unit while the  
upgrade is in process.  
b) Abort: To abort the procedure, type 2and press [Enter].  
6. Incomplete Upload: If the upload is interrupted, times-out, or if the file  
is corrupted during transfer, the APS-8/16M will display a screen which  
asks for user confirmation before proceeding. To proceed, type 1and  
press [Enter], then return to Step 4 above.  
7. Emergency Recovery: In the rare event that the APS-8/16M operating  
system becomes corrupted during installation, front panel indicators will  
blink five times and the unit will automatically switch to Emergency  
Recovery Mode. Please contact WTI Customer Service for further  
instructions.  
When firmware upgrades are available, WTI will provide the necessary  
files via modem or mailed diskette. At that time, an updated Users Guide or  
addendum will also be available.  
10-2  
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11. Command Reference Guide  
11.1. Command Conventions  
The commands described in this section conform to the following conventions:  
Slash Character: Most APS-8/16M commands begin with the Slash  
Character (/).  
Apply Command to All Ports: When the asterisk character is entered as  
the argument of the /Dcommand (Disconnect Port), or the /Ecommand  
(Erase Buffer) the command will be applied to all ports. For example, to  
erase all port buffers, type /E * [Enter].  
Port Name Wild Card: It is not always necessary to enter the entire port  
name. Port names can be abbreviated in command lines by entering the  
first character(s) of the name followed by an asterisk (*). For example, a  
port named "SERVER" can be specified as "S*". Note however, that this  
command would also be applied to any other port name that begins with  
the letter "S".  
Suppress "Sure?" Prompt: When the /D(Disconnect Port), /E(Erase  
Buffer), or /I(Default and Test Unit) commands are invoked, the /Y  
option can be included in the command line to override the "Are you Sure  
(y/n)?" prompt. For example, to disconnect Port 8 without displaying the  
"Sure?" prompt, type /D/Y 8 [Enter].  
Enter Key: All commands are invoked by pressing [Enter].  
Command Mode: APS-8/16M Ports will only recognize commands  
when the command mode has been activated. The command mode can  
be accessed from a free Any-to-Any or Modem Mode Port. To access the  
command mode, proceed as described in Section 5.1.  
Connected Ports: When two ports are connected, most APS-8/16M  
commands will not be recognized by either of the connected ports. The  
only exception is the Resident Disconnect Sequence (Default = ^X ([Ctrl]  
plus [X])).  
Configuration Menus: To exit from most configuration menus, you  
must press [Esc]. The only exception to this rule is the Copy Parameters  
Menu. For more information on the Copy Parameters Menu, please refer  
to Section 5.6.  
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11.2. Command Response  
When commands are sent to the APS-8/16M, the unit can respond with either  
verbose (English Text) or terse messages (numeric / abbreviated). In the  
default state, all ports will send verbose command responses.  
After the unit is installed and configured, the port configuration command  
(/P) can specify an individual response format for each port. In addition to  
the Terse and Verbose response modes, the port configuration commands can  
also select the Quiet Mode. When the Quiet Mode is selected, the port will not  
send messages in response to commands.  
The table below summarizes the various response messages for both the Terse  
and Verbose modes.  
Terse  
Verbose  
0
OK  
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
RAM Test Passed  
Connected *  
Busy  
Disconnected  
Invalid Command  
Are You Sure (Y/N) ?  
Invalid Parameter  
Invalid Syntax  
Invalid Access  
Enter Site ID:  
Aborted  
Enter Password:  
Invalid Password  
RAM Test Failed at *  
Inactivity Timeout, Disconnected  
Data in Buffer from Previous Connection ...  
Re-Enter Logoff Sequence to Purge Buffer.  
G
Asleep  
* These verbose Response Messages include additional information not  
provided by terse Response Messages.  
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Command Reference Guide  
11.3. Command Summary  
Command Availability  
Function  
Command Syntax  
Supervisor  
Non-Supervisor  
Enter Command Mode  
Exit Command Mode  
Help Menu  
[Enter]  
X
X
X
X
/X [Enter]  
/H [Enter]  
/J [Enter]  
/S [Enter]  
X
X
Display Site ID  
X
X
Display Port Status  
X  
X  
X
X  
X  
X  
Display Port Diagnostics /SD[Enter]  
Display Port Parameters /W [n] [Enter]  
(Who)  
Display Password  
Directory  
/V [Enter]  
X
Set System Parameters /F [Enter]  
X
X
Set RS232 Port  
Parameters  
/P <x> [Enter]  
Copy RS232 Port  
Parameters  
/CP [Enter]  
X
Connect  
/C <x> [x] [Enter]  
X
X
X
X  
^X  
X
Resident Disconnect  
Third Party Disconnect  
/D[/Y] <x> [x] [Enter]  
/D[/Y] * [Enter]  
Unlock All Ports (Invalid /UL [Enter]  
Access)  
X
X
Erase Buffer  
/E[/Y] <x> [x] [Enter]  
/E[/Y] * [Enter]  
/I[/Y] [Enter]  
/U [Enter]  
Default & Test  
X
X
X
Save Parameters  
Upgrade Firmware  
/UF [Enter]  
Supervisor Mode displays parameters for all ports; Non-Supervisor Mode  
only displays parameters for ports allowed by Port Password.  
Ports and passwords that do not permit access to Supervisor Mode can  
only view parameters for the ports that are specifically allowed by the  
password entered at log in.  
Ports and passwords that do not permit access to Supervisor Mode are not  
allowed to perform a Third Party Connect.  
Resident Disconnect: Disconnects your resident port from another port.  
Note that the Resident Disconnect Sequence can be redefined via the Port  
Configuration Menus.  
Third Party Disconnect: Disconnects two or more nonresident ports.  
Must be issued from a third port where Supervisor Mode is active.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
11.4. Command Set  
This section provides more detailed information on all APS-8/16M commands,  
sorted alphabetically by name.  
[Enter]  
Enter Command Mode  
In order to set parameters or connect ports, you must first access command  
mode as described in Section 5.1. When command mode is inactive (port  
asleep), the port will only respond when the [Enter] key is pressed without any  
characters preceding it. If you have defined at least one password that permits  
access to Supervisor Mode, the unit will require a password before allowing  
access to command mode.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: [Enter] (Press [Enter] twice if other characters have already  
been typed.)  
Response: The Port Status Screen will be displayed, followed by the  
command prompt.  
^X Resident Disconnect Sequence  
The Resident Disconnect Sequence is issued to disconnect your resident port  
from another port. For example, if you are communicating via Port 3, and Port  
3 is connected to Port 4, the Resident Disconnect Sequence would be used  
to disconnect Port 3 from Port 4. Although the default Resident Disconnect  
Sequence is ^X([Ctrl] plus [X]), the command format and Logoff Character  
can also be redefined via the Port Configuration Menus. Note that a three  
character disconnect command can also be selected.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: ^X  
Response:  
Verbose: The APS-8/16M will send the "Disconnected" message, followed  
by the Port Status Screen.  
Terse: 3  
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Command Reference Guide  
/C  
Connect  
Establishes a bidirectional connection between two ports. For more  
information and command line examples, please refer to Section 8.1. There  
are two types of port connections:  
Resident Connect: If the /C command specifies one port name or  
number, your resident port will be connected to the specified port.  
Third Party Connect: If the /C command specifies two port names or  
numbers, the unit will connect the two ports indicated. A Third Party  
Connect command must be issued from a third port where Supervisor  
Mode is active. Passwords and ports that do not permit Supervisor Mode  
cannot initiate a Third Party Connect.  
Note:  
• Passwords and ports that do not permit Supervisor Mode can only  
connect to the ports that are specifically allowed by the password  
entered at log in.  
• Passwords and ports that permit Supervisor Mode can connect to  
any free APS-8/16M port.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /C <x> [x] [Enter]  
Where xis the number or name of the port(s) to be connected.  
Response:  
Verbose: Connected xx, when a Resident Connection is initiated, the  
APS-8/16M will also display the currently selected Resident Disconnect  
Sequence for your port.  
Terse: 1  
/CP Copy RS232 Port Parameters  
Allows quick set-up when all RS232 ports will be configured with the same or  
similar parameters. When the /CP command is invoked, the APS-8/16M will  
display a menu that is used to select common port parameters, which can then  
be copied to all APS-8/16M RS232 ports. Note that the Copy Command will  
not change restricted parameters at Ports 1 and 2 or the Internal Modem Port.  
For more information, please refer to Section 5.6.  
Availability: Supervisor Mode Only  
Format: /CP [Enter]  
Response: Displays Copy Parameters Menu  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
/D  
Third Party Disconnect  
Invoke the /D command at your resident port to disconnect two other ports.  
The /D command cannot be used to disconnect your resident port. To  
disconnect your resident port, issue the Resident Disconnect Sequence or wait  
for the Timeout Period to elapse (if enabled).  
Availability: Supervisor Mode Only  
Format: /D[/Y] <x> [x] [Enter]  
Where:  
/Y (Optional) suppresses the "Sure?" prompt.  
x
Is the number or name of the port(s) to be disconnected.  
To Disconnect all ports, enter an asterisk.  
Response:  
Verbose: "Are you Sure (y/n)?", if Y, unit will respond with  
"Disconnected".  
Terse: 5, if Y, unit will respond with 3.  
Example: To disconnect Port 2 from Port 3 without the "Sure?" prompt,  
access command mode using a port and password that permit Supervisor  
Mode, and type one of the following commands:  
/D/Y 2 [Enter] or /D/Y 3 [Enter]  
/E  
Erase Buffer  
Erases data from the buffer for a specified port or several ports. Note that  
erased data cannot be recovered.  
Availability: Supervisor Mode Only  
Format: /E[/Y] <x> [x] [Enter]  
Where:  
x
Is the number or name of the port buffer(s) to be cleared.  
To erase buffers for all ports, enter an asterisk.  
/Y (Optional) Suppresses the "SURE? (Y/N)" prompt.  
Response:  
Verbose: "Are You Sure (y/n)?", if Y, the unit will respond with "OK".  
Terse: 5, if Y, the unit will respond with 0.  
Example: To clear the buffer for Port 3, access command mode using a port  
and password that permit Supervisor Mode, and type /E 3 [Enter].  
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Command Reference Guide  
/F  
Set System Parameters  
Displays a menu which is used to define the Site ID message and other global  
parameters. Also allows access to the "Add Password" function. For more  
information, please refer to Section 5.4.  
Availability: Supervisor Mode Only  
Format: /F [Enter]  
Response: Displays System Parameters Menu  
/H  
Help  
Displays a Help Screen, which lists all APS-8/16M commands along with a  
brief description of each command.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /H [Enter]  
Response: Displays Help Screen. Note that the Supervisor Mode Help Screen  
differs from the Non-Supervisor Mode Help Screen.  
/I  
Default and Test  
Tests internal memory and initializes the unit with the default parameters  
specified by the SetUp Switches.  
CAUTION: When /I is invoked, the APS-8/16M will revert to the  
parameters specified by the SetUp Switches. Command selected  
parameters will be lost.  
Availability: Supervisor Mode Only  
Format: /I[/Y] [Enter]  
Where /Yis a command option used to suppress the "Sure?" prompt.  
Response:  
Verbose: "Are You Sure (y/n)?", if Y, memory test and initialization begins.  
Terse: 5, if Y, memory test and initialization begins.  
/J  
Display Site ID  
Displays the user-defined Site I.D. message.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /J [Enter]  
Response: Displays Site I.D. Message  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
/P  
Set RS232 Port Parameters  
Displays a menu which allows the user to select options and parameters for  
the selected port. Section 5.5.3 describes the procedure for defining port  
parameters.  
Availability: Supervisor Mode Only  
Format: /P [x] [Enter]  
Where xis the number or name of the port to be configured. If the  
port number or name is not specified, the APS-8/16M will display the  
configuration menu for your resident port.  
Response: The Port Parameters Menu is displayed.  
/S  
Display Port Status  
Displays the Port Status Screen, which lists current conditions and parameters  
for all ports. When the Supervisor Mode is active, the /S command will  
display the current status of all APS-8/16M Ports. If the Supervisor Mode is  
not active, then the /S command will only display status information for the  
ports that are specifically allowed by the password entered at log in. For more  
information on the Port Status Screen, please refer to Section 7.1.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /S [Enter]  
Response: Displays Port Status Screen  
/SD Display Port Diagnostics  
Provides more detailed information regarding the operational status of each  
port. If your password and port permit Supervisor Mode, the /SD command  
will display status information for all APS-8/16M ports. However, if your  
password or port do not permit Supervisor Mode, then the /SD command  
will only display information for the ports specifically allowed by your  
password. For More information on the Port Diagnostics Screen, please refer  
to Section 7.2.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /SD [Enter]  
Response: Displays Port Diagnostics Screen  
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Command Reference Guide  
/U  
Save Parameters  
Sends configuration parameters to an ASCII text file as described in Section 9.  
Availability: Supervisor Mode Only  
Format: /U [Enter]  
Response: The APS-8/16M will send a series of command lines.  
/UF Upgrade Firmware  
When new versions of the APS-8/16M operating firmware become available,  
this command is used to update the existing firmware as described in  
Section 10. Note that this command will only function at the Internal Modem  
Port and at Setup Ports One and Two.  
Availability: Supervisor Mode Only  
Format: /UF [Enter]  
Response: The APS-8/16M will display a menu which offers the options  
to retain existing APS-8/16M parameters, default parameters or abort the  
upgrade procedure.  
/UL Unlock All Ports  
Unlocks all ports that have been deactivated by the Invalid Access Lockout  
Function. When the /UL command is invoked, the APS-8/16M will unlock all  
RS232 ports that are currently in the locked state. For more information on the  
Invalid Access Lockout Function, please refer to Section 5.5.4.  
Availability: Supervisor Mode Only.  
Format: /UL [Enter]  
Response: The APS-8/16M will unlock all RS232 Ports.  
/V  
Display Password Directory  
Displays the Password Directory as described in Section 7.4. Note that the /V  
command will not display actual passwords, but will instead read "defined" or  
"undefined."  
Availability: Supervisor Mode Only.  
Format: /V [Enter]  
Response: The unit will display the Password Directory Screen.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
/W  
Display Port Parameters (Who)  
Displays detailed configuration information for an individual port. Ports with  
User Level command capability cannot display parameters for other ports. If  
you have logged into command mode using a port and password that permit  
Supervisor Mode, the /W command can display information for any  
APS-8/16M port. However, if you have logged into command mode using a  
port or password that do not permit Supervisor Mode, the /W command will  
only display information for your resident port. For more information, please  
refer to Section 7.3.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /W [x] [Enter]  
Where xis the Port number or name. If the "x" argument is omitted,  
parameters for your resident port will be displayed.  
Response: Displays port parameters.  
Example: To display parameters for a port named "SERVER", access the  
Command Mode from a port with Supervisor Level command capability, and  
type /W SERVER [Enter].  
/X  
Exit Command Mode  
Exits command mode. When issued at the Net Port, also ends the telnet  
session. Note that exiting from command mode will not terminate port  
connections.  
• Any-to-Any Mode: Exits command mode.  
• Modem Mode: Disconnects and resets modem, hang-up message is sent,  
hardware line to modem drops for 500 ms, and modem reset string is sent.  
Availability: Supervisor Mode / Non-Supervisor Mode  
Format: /X [Enter]  
Response: Disconnected  
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A. RS232 Port Interface  
Figure A.1: RS232 Port Hardware  
DCD and DTR hardware lines function as follows:  
1. When connected:  
a) If either port is set for Modem Mode, the DTR output at either port  
reflects the DCD input at the other end.  
b) If neither port is set for Modem Mode, DTR output is held high  
(active).  
2. When not connected:  
a) If the port is set for Modem Mode, upon disconnect DTR output is  
pulsed for 0.5 seconds and then held high.  
b) If the port is not set for Modem Mode, DTR output is controlled  
by the DTR Output option (Parameters Menu, Option 74). Upon  
disconnect, Option 74 allows DTR output to be held low, held high,  
or pulsed for 0.5 seconds and then held high.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
B. Specifications  
RS232 Port Interface:  
APS-8M & APS-8M-DC: Seven (7) RS232 serial inputs use DB9  
connectors configured as DTE ports.  
APS-16M & APS-16M-DC: Sixteen (16) RS232 serial inputs use DB9  
connectors configured as DTE ports.  
Internal Modem Interface: RJ11 connectors for connection to your telco line  
Coding: Asynchronous, 7/8 bits ASCII.  
Parity: Even, Odd, None  
Stop Bits: 1 or 2.  
Data Rate: 300 to 115.2K bps (standard rates).  
Flow Control: XON/XOFF, RTS/CTS, Both, or None.  
Timeout: No activity timeout disconnects port. 1, 5, 10, 15, 30 seconds, 1, 5,  
15, 30, 90 minutes.  
Memory: Stores Parameters and captured data. Non-volatile 32K SRAM  
buffer memory per port.  
Break: Accept Break or Refuse Break  
LEDs: On, Ready, Activity (for each RS232 Port).  
Temperature: 0°C to 45°C (operating)  
Power:  
AC Models: IEC-32 Inlet, 115/230 VAC, 50/60 Hz, 5 watts  
DC Models: Terminal Strip, -48 VDC, 0.2 Amp Max.  
Size: 1.7” High x 17.15” Wide x 6.8” Deep (One Rack Unit)  
Weight: 8 lbs. shipping weight  
Humidity: 10 to 90% RH, Non-Condensing  
Venting: Side vents are used to dissipate heat generated within the unit.  
When mounting the unit in an equipment rack, make certain to allow  
adequate clearance for venting.  
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Appendices  
C. Customer Service  
Customer Service hours are from 8:00 AM to 5:00 PM, PST, Monday through  
Friday. When calling, please be prepared to give the name and make of the  
unit, its serial number and a description of its symptoms. If the unit should  
need to be returned for factory repair it must be accompanied by a Return  
Authorization number from Customer Service.  
WTI Customer Service  
5 Sterling  
Irvine, California 92618  
Local Phone: (949) 586-9950  
Toll Free Service Line: 1-888-280-7227  
Service Fax: (949) 457-8138  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
D. Trademark and Copyright Information  
WTI and Western Telematic are trademarks of Western Telematic Inc.. All  
other product names mentioned in this publication are trademarks or registered  
trademarks of their respective companies.  
Information and descriptions contained herein are the property of Western  
Telematic Inc.. Such information and descriptions may not be copied,  
disseminated, or distributed without the express written consent of Western  
Telematic Inc..  
© Copyright Western Telematic Inc. 2005.  
Printed in the United States of America.  
March, 2005  
Part Number: 13202, Revision: D  
Trademarks Used in this Manual  
ProComm and ProComm Plus are registered trademarks of Datastorm  
Technologies, Inc.  
HyperTerminal is a registered trademark of Hilgraeve, Inc.  
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Appendices  
E. Regulatory Statements  
FCC Part 15 Regulation  
This equipment has been tested and found to comply with the limits for a Class A digital device,  
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection  
against harmful interference when the equipment is operated in a commercial environment. This  
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instruction manual, may cause harmful interference to radio communications.  
Operation of this equipment in a residential area is likely to cause harmful interference in which  
case the user will be required to correct the interference at his own expense.  
This device complies with part 15 of the FCC Rules. Operation is subject to the following two  
conditions: (1) This device may not cause harmful interference, and (2) this device must accept  
any interference received, including interference that may cause undesired operation  
WARNING: Changes or modifications to this unit not expressly approved by the  
party responsible for compliance could void the user’s authority to operate the  
equipment  
FCC Part 68 Statement  
General Requirements For All Equipment:  
This equipment complies with Part 68 of the FCC rules. On the back cover of this equipment is a  
label that contains, among other information, the FCC registration number and ringer equivalence  
number (REN) for this equipment. If requested, this information must be provided to the telephone  
company.  
A plug and jack used to connect this equipment to the premises wiring and telephone network  
must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A  
compliant telephone cord and modular plug is provided with this product. It is designed to be  
connected to a compatible modular jack that is also compliant. See installation instructions for  
details.  
The REN is used to determine the number of devices that may be connected to a telephone line.  
Excessive RENs on a telephone line may result in the devices not ringing in response to an  
incoming call. In most but not all areas, the sum of RENs should not exceed five (5.0). To be  
certain of the number of devices that may be connected to a line, as determined by the total RENs,  
contact the local telephone company.  
If this equipment (analog modem) causes harm to the telephone network, the telephone company  
will notify you in advance that temporary discontinuance of service may be required. But if  
advance notice isn’t practical, the telephone company will notify the customer as soon as possible.  
Also, you will be advised of your right to file a complaint with the FCC if you believe it is  
necessary.  
The telephone company may make changes in its facilities, equipment, operations or procedures  
that could affect the operation of the equipment. If this happens the telephone company will  
provide advance notice in order for you to make necessary modifications to maintain uninterrupted  
service.  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
If trouble is experienced with this equipment, for repair or warranty information, please contact  
Western Telematic, Inc. at 1-800-854-7226. If the equipment is causing harm to the telephone  
network, the telephone company may request that you disconnect the equipment until the problem  
is resolved.  
Connection to party line service is subject to state tariffs. Contact the state public utility  
commission, public service commission or corporation commission for information.  
If your home has specially wired alarm equipment connected to the telephone line, ensure the  
installation of this equipment does not disable your alarm equipment. If you have questions about  
what will disable alarm equipment, consult your telephone company or a qualified installer.  
EMC, Safety, and R&TTE Directive Compliance  
The CE mark is affixed to this product to confirm compliance with the following European  
Community Directives:  
Council Directive 89/336/EEC of 3 May 1989 on the approximation of the laws of Member  
States relating to electromagnetic compatibility;  
and  
Council Directive 73/23/EEC of 19 February 1973 on the harmonization of the laws of  
Member States relating to electrical equipment designed for use within certain voltage  
limits;  
and  
Council Directive 1999/5/EC of 9 March on radio equipment and telecommunications  
terminal equipment and the mutual recognition of their conformity.  
Industry Canada  
This Class A digital apparatus complies with Canadian ICES-003.  
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.  
This product meets the applicable Industry Canada technical specifications  
The Ringer Equivalence Number is an indication of the maximum number of devices allowed  
to be connected to a telephone interface. The termination on an interface may consist of any  
combination of devices subject only to the requirement that the sum of the RENs of all the devices  
does not exceed five  
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Index  
Dial Back Mode  
Dial Back Number  
Disconnecting Ports  
DTR Output  
DTR Signal  
Duplex Mode  
5-6  
5-6  
8-2 to 8-3  
5-13  
A
Accept Break  
5-16  
2-1  
4-1  
5-6  
5-5  
5-6  
5-6  
5-6  
5-7  
Activity LEDs  
AC Powered Units  
Adding Passwords  
Add Name/Password  
Dial Back Number  
Name  
Password  
Port Access  
Supervisor Mode  
Any-to-Any Mode  
AT Commands  
Apx-1  
5-16  
E
Edit/Delete from Search  
Edit/Delete from List  
Edit Password  
EMC Information  
Enter Command Mode  
Erase/Connect  
5-5 to 5-6  
5-5  
5-7  
Apx-6  
11-4  
5-6  
5-11  
6-1 to 6-4  
8-7  
Erase Buffer Command  
Exit Command Mode  
11-6  
11-10  
B
C
Baud Rate  
Bits  
Breaks  
Buffer Mode  
Port Buffers  
Reading Data  
5-13  
5-13  
5-16  
F
Firmware Upgrade  
Flow Control  
10-1 to 10-2, 11-9  
5-13  
5-1, 5-11, 8-6  
8-8  
G
8-7  
Grounding  
i
H
Handshake Mode  
Hang-Up String  
Help Menu  
CLEAR Button  
Command Echo  
2-1  
5-16  
5-13  
5-14  
11-7  
Command Mode Access  
Local  
5-1 to 5-2  
5-1 to 5-2  
Hunt Groups  
8-4 to 8-5  
Modem  
Command Reference Guide  
Command Response  
Command Set  
Command Summary  
Configuration  
Connecting Ports  
Connecting Power  
Connect Command  
Copying Parameters  
Copy Parameters  
Customer Service  
11-1 to 11-10  
I
11-2 Initialization String  
11-4 Internal Modem  
11-3 Invalid Access Lockout  
5-14  
6-1 to 6-4  
5-16 to 5-17  
5-17  
5-1 to 5-20  
8-1 to 8-2  
4-1  
Lockout Access  
Lockout Attempts  
Lockout Duration  
Unlock Ports  
5-17  
5-17  
11-9  
11-5  
5-18  
11-5  
Apx-3  
L
Line Port  
Lockout Access  
Logoff Character  
2-2, 4-2  
5-17  
D
Data Bits  
DCD Indicator  
5-15  
5-13  
2-1  
4-1  
M
Modem Command Mode  
Modem Mode  
6-1  
5-11, 8-8  
5-14  
5-14  
5-14  
2-2, 4-2  
DC Powered Units  
Default and Test  
Default Parameters  
Reset  
Delete Password Directory  
Diagnostics Screen  
Dial Back Attempts  
Dial Back Delay  
Dial Back Function  
11-7  
Hang-Up String  
Initialization String  
Reset String  
2-1  
5-8  
7-2  
5-4  
5-4  
Modem Port  
5-8 to 5-9  
Index-1  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
Port Interface  
Port Mode  
Port Modes  
Any-to-Any Mode  
Buffer MOde  
Buffer Mode  
Modem Mode  
Passive Mode  
Port Name  
Port Parameters  
Port Parameters Screens  
Port Status  
Port Status Screen  
Power Components  
Power Supply  
Apx-1  
5-13  
5-11  
5-11  
5-11  
N
Name  
No Activity Timeout  
5-6  
8-4  
O
One Character Disconnect  
ON Indicator  
5-15, 8-3  
2-1  
8-1 to 8-9  
8-6 to 8-7  
5-11, 8-8  
5-11, 8-6  
5-13  
11-8, 11-10  
7-4  
11-8  
7-1 to 7-2  
2-2  
Operation  
P
Parameters  
Saving and Restoring  
Parity  
9-1 to 9-2  
5-13  
Passive Mode  
Passwords  
Adding  
5-1, 5-11, 8-6  
5-2 to 5-4  
5-6 to 5-7  
5-7 to 5-8  
5-4 to 5-6, 11-9  
5-5 to 5-6  
5-5  
i, 4-1  
Editing and Deleting  
Password Directory  
Add Name/Password  
Delete Entire Directory  
Deleting Entire  
Edit/Delete from List  
Edit/Delete from Search  
Password Directory Screen  
Password on Dial Back  
Pinout  
R
Rack Mounting  
RDY Indicator  
Reading Data  
Reset Default Parameters  
Reset String  
Resident Connections  
Resident Disconnect  
Response Type  
Restoring Parameters  
RS232 Ports  
i
2-1  
8-7  
2-1  
5-14  
8-1  
5-8  
5-5 to 5-6  
5-5  
7-4 to 7-5  
5-4  
Apx-1  
5-7  
8-8  
5-10 to 5-19  
5-16  
5-15, 8-3, 11-4  
5-16  
9-2  
2-2, Apx-1  
5-12 to 5-17  
Port Access  
Port Buffers  
Port Configuration  
Accept Break  
Baud Rate  
Configuration  
S
Save Entry  
Saving Parameters  
Scroll All  
Sequence Disconnect  
Serial Ports  
SET Button  
5-7  
9-1, 11-9  
8-7  
5-13  
5-16  
5-10  
5-18  
5-13  
5-13  
5-13  
Command Echo  
Conventions  
5-15  
2-2  
2-1  
5-2  
Copying Parameters  
Data Bits  
DTR Output  
Handshaking  
Set Up Ports  
Site I.D. Message  
Skip/Connect  
Slash Character  
Specifications  
5-4, 11-7  
8-7  
Hang-Up String  
Initialization String  
Invalid Access Lockout  
Logoff Character  
Parity  
Port Mode  
Port Modes  
Port Name  
Reset String  
Response Type  
Sequence Disconnect  
Supervisor Mode  
Timeout Disconnect  
Port Connection  
Resident Connections  
Third Party Connections  
Port Diagnostics  
Port Diagnostic Screen  
Port Disconnection  
5-14  
5-14  
5-16 to 5-17  
5-15  
11-1  
Apx-2  
7-1 to 7-5  
7-4  
7-2 to 7-3  
7-4  
Status Screens  
5-13  
5-13  
5-11  
5-13  
5-14  
5-16  
5-15  
5-15  
Password Directory Screen  
Port Diagnostic Screen  
Port Parameters Screens  
Port Status Screen  
Stop Bits  
7-1 to 7-2  
5-13  
Supervisor Mode  
Sure Prompt  
5-1, 5-2, 5-6, 5-15  
11-1  
5-3 to 5-9, 11-7  
System Parameters  
Dial Back Attempts  
Dial Back Delay  
Password Directory  
Password on Dial Back  
Site I.D. Message  
5-16  
5-4  
5-4  
5-4 to 5-7  
5-4  
4-2, 8-1 to 8-2  
8-1  
8-1  
11-8  
7-2  
8-2 to 8-3  
5-4  
Index-2  
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Index  
T
Terminal Block  
Terse Response  
4-1  
5-16, 11-2  
8-1  
8-3, 11-6  
5-15, 8-3  
8-4  
Third Party Connections  
Third Party Disconnect  
Three Character Disconnect  
Timeout  
Timeout Disconnect  
5-16  
U
Unlocking Ports  
Unlock Ports  
5-17  
11-9  
Upgrade Firmware  
Upgrading Firmware  
User Name  
11-9  
10-1 to 10-2  
5-6  
V
Verbose Response  
5-16, 11-2  
W
Warnings and Cautions  
Who Command  
ii  
11-10  
Index-3  
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APS-8M / APS-16M Asynchronous Port Switches; Users Guide  
Index-4  
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