Snom Telephone VoIP Phone User Manual
VoIP Phone snom 220  
IP phone for superior communication  
Manual v3.40 English  
26 Aug 2004  
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Foreword  
Congratulations on the purchase of your snom 220 Voice over IP  
telephone!  
Telephony is part of our everyday life. Over a period of more than 100  
years a form of communication has evolved which we feel cannot be  
ignored. In spite of the new technology base of the snom 220, most of  
its look and feel will be very familiar to you and you should be able to  
use it intuitively.  
On the other hand, the world of the Internet has opened a whole range  
of new possibilities. Many users are using web browsers and own one or  
more e-mail accounts. They will find it easy to manage the phone via its  
web interface or to make a call to “sip:[email protected]”, for example.  
We are confident that developments in the computer industry will follow  
those in the telecom world.  
VoIP is not only about transporting speech over data networks. It is  
about interoperability and breaking up a vertical market, as well as  
streamlining business processes by seamlessly integrating the telephone  
into computer networks and applications. With its technical flexibility,  
our commitment to all open and relevant standards and our cooperation  
with other vendors in the VoIP industry, the snom 220 represents a safe  
investment for the future.  
We would like to take this opportunity to wish you a great experience in  
the VoIP world.  
snom technology AG  
Note to the reader  
This manual is describing the snom220 running in administrator  
mode.  
The current version of this manual can be obtained from:  
http://www.snom.com/snom220_en.php  
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Table of Contents  
Foreword............................................................................3  
Note to the reader..............................................................3  
Table of Contents ...............................................................4  
1. Installation .................................................................6  
Delivery Content ..............................................................................................................6  
Safety Notes....................................................................................................................6  
Power supply................................................................................................................6  
Setting up the Phone.....................................................................................................6  
Cleaning......................................................................................................................6  
Connecting the phone.......................................................................................................6  
Keypad ...........................................................................................................................7  
Initialization ....................................................................................................................8  
Booting .......................................................................................................................8  
DHCP Configuration.......................................................................................................9  
Selecting the IP Address................................................................................................9  
Selecting the Netmask.................................................................................................10  
Selecting the IP Gateway.............................................................................................10  
Selecting the DNS Server.............................................................................................10  
Selecting the Tone Scheme..........................................................................................10  
Selecting the Timezone ...............................................................................................11  
Logging on the first account.........................................................................................11  
2. Logon........................................................................12  
Mobility.........................................................................................................................12  
Logon Wizard.................................................................................................................12  
snom Menu ...................................................................................................................13  
Logon User ................................................................................................................13  
Logoff User ................................................................................................................13  
Logoff All...................................................................................................................13  
Select Outgoing Line ...................................................................................................13  
DND Mode on/off........................................................................................................14  
Challenge/Authentication ................................................................................................14  
3. Basic Functions .........................................................16  
Idle State......................................................................................................................16  
Dialing..........................................................................................................................16  
Input Modes...............................................................................................................17  
Dialing a phone number...............................................................................................17  
Dialing an H.323/SIP Address.......................................................................................18  
Dialing an IP Address ..................................................................................................20  
Number guessing........................................................................................................20  
Terminating a call.......................................................................................................20  
Incoming Call ................................................................................................................21  
Accepting a Call..........................................................................................................21  
Denying/Blocking a Call ..................................................................................................22  
Adjusting the Volume .....................................................................................................22  
Mute / Unmute ..............................................................................................................22  
Handset / Handsfree / Headset ........................................................................................23  
Programmable Keys........................................................................................................23  
Line ..........................................................................................................................23  
Destination ................................................................................................................24  
Intercom ...................................................................................................................24  
Park orbit ..................................................................................................................25  
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Table of Contents  
DTMF ........................................................................................................................25  
Main Menu.....................................................................................................................25  
Adjusting the Volume in Idle Mode ...................................................................................26  
Ring Tones ....................................................................................................................26  
About ...........................................................................................................................27  
4. Advanced Functions ..................................................28  
Hold and Resume...........................................................................................................28  
Transfer........................................................................................................................28  
Direct Transfer ...........................................................................................................28  
Consultation Transfer ..................................................................................................29  
Conference....................................................................................................................29  
Call Diversion ................................................................................................................30  
Diverting all calls ........................................................................................................30  
Divert when Busy .......................................................................................................30  
Divert when not answered ...........................................................................................30  
On “busy” (CCBS).......................................................................................................30  
On “no response” (CCNR) ............................................................................................31  
DTMF Tones...................................................................................................................32  
Short Messages (SMS)....................................................................................................32  
Message Waiting Indication (MWI)....................................................................................33  
Conducting a Software Update.........................................................................................34  
Additional PBX Features ..................................................................................................35  
Pickup.......................................................................................................................35  
Conference ................................................................................................................35  
5. Call Register..............................................................36  
Phone Book ...................................................................................................................36  
Adding an entry..........................................................................................................36  
Editing an entry..........................................................................................................37  
Export.......................................................................................................................39  
Import.......................................................................................................................39  
Preview.........................................................................................................................40  
Call Lists .......................................................................................................................41  
Speed Dial.....................................................................................................................42  
Dialing ......................................................................................................................43  
Editing speed dial entries.............................................................................................43  
Deny List.......................................................................................................................43  
Browsing ...................................................................................................................43  
Adding a number........................................................................................................44  
Removing a number....................................................................................................45  
6. Settings.....................................................................46  
Settings via Phone..........................................................................................................46  
Settings via Web Browser................................................................................................46  
Settings Options ............................................................................................................46  
Setup Preferences.......................................................................................................46  
Setup Speed Dial........................................................................................................46  
Setup Line1-7 ............................................................................................................46  
Setup Advanced .........................................................................................................46  
Setup Update.............................................................................................................46  
H.323........................................................................................................................46  
Status .......................................................................................................................46  
7. Appendix...................................................................46  
Standard Conformance ...................................................................................................46  
8. Index ........................................................................46  
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1. Installation  
Delivery Content  
Please check whether the delivery contains the following parts:  
The base unit with display and keypad  
The handset  
The handset cable  
The power supply (optional)  
Safety Notes  
Please observe the following safety advice. It is crucial for the safe and  
reliable operation of the device.  
!
Power supply  
You have two options for providing the snom 220 with power:  
An external power supply (48 V)  
Power feeding over the network cable (PowerDsine product family 4000  
and 6000)  
If you want to use an external power supply, use the one that is  
included in the package. Other power-supplies may cause damage to  
the phone, affect its behavior, or induce noise.  
Setting up the Phone  
The snom 220 must be placed on an even, horizontal surface that gives  
the rubber pads a secure grip. Do not place the snom 220 on carpets or  
other materials containing fibers that could block the air vents and  
cause overheating.  
Cleaning  
To clean the snom 220, use an anti-static cloth. Please avoid cleaning  
liquids as they might damage the surface or internal electronics of the  
phone.  
Connecting the phone  
First connect one end of the handset cable to the handset and then to  
the jack on the left-hand side of the phone.  
Next plug the Ethernet (network) cable into the RJ45 connector, which  
is named “NET” and is the nearest to the middle of the phone and plug  
the other end into the network side to establish a data link. The second  
RJ45 connector named “PC” is for daisy-chaining further Ethernet  
devices without the need for a second Ethernet connection line.  
If you are using an external power supply, please insert the plug of the  
power supply into the connector next to the data line and hook up the  
casing into the mains.  
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Installation  
If you want to use a headset, it can be connected to the audio jacks on  
the rear side of the snom 220. The connector named “In” is for the  
microphone.  
Keypad  
The numeric keypad with the keys 0 to 9, * and # is used to enter digits  
and letters. Depending on the operating mode, different actions can be  
performed (see the table below):  
Entry of digits only (e.g., when dialing a phone number),  
Typing in letters and digits by pressing the keys repeatedly (similar to a  
cellular phone).  
The MENU key  
actions or input, the CANCEL key  
is used to invoke the main menu. To cancel  
can be used. The ENTER key  
confirms actions, selections and inputs.  
Depending on the operating mode, the keys can have context-specific  
meanings which are described in this manual.  
The soft keys F1 to F4 located below the display are context-sensitive  
function keys. Their current mapping is depicted with symbols in the  
bottom line on the display.  
The five keys on the right with LEDs on them are the programmable  
function keys that different functionalities can be mapped onto.  
The keys of the numeric block in different operating modes:  
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Installation  
Key Digits Lower case  
Upper case  
(SPC)_0  
.@1,?!-  
0
1
0
1
(SPC)_0  
.@1,?!-  
/():;&%*#+<=>$[] /():;&%*#+<=>$[]  
2
3
4
5
6
7
8
9
#
2
3
4
5
6
7
8
9
#
abc2  
def3  
ABC2  
DEF3  
ghi4  
GHI4  
jkl5  
JKL5  
mno6  
pqrs7$  
tuv8  
MNO6  
PQRS7$  
TUV8  
wxyz9  
WXYZ9  
# or after timeout, # or after timeout,  
number guessing if number guessing if  
not numeric  
not numeric  
*
*
Toggles upper and lower case  
Initialization  
Booting  
The booting process comprises a series of different configuration steps  
that set up the phone for future use by any user.  
Selecting the language  
The default language setting is English. To change to a different  
language, press the MENU key  
, go to the submenu “Settings”  
with or and press ENTER  
to select this menu entry.  
Select “Base” and press ENTER  
.
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Installation  
Select “Language”  
and set it to your choice, e.g., “English”.  
Press ENTER  
to activate your selection.  
DHCP Configuration  
If the network supports DHCP, then on bootup select  
screen appears:  
when this  
The phone has a built-in DHCP client. It will receive an IP address and  
other network-related settings (Netmask, IP gateway, DNS server) from  
the DHCP server.  
If DHCP is not used, select  
in the screen above. The user will  
subsequently be asked for the following settings:  
Selecting the IP Address  
The user can provide a static IP address for the phone if DHCP is not  
used.  
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Installation  
A valid IP address appropriate to the network in which the phone is  
being used can be provided.  
Selecting the Netmask  
Similarly, the user will be asked to provide a Netmask:  
Selecting the IP Gateway  
If a valid Netmask has been provided, the user will be asked for the IP  
address of the IP gateway:  
Selecting the DNS Server  
The last item for this series of network-related configuration is the IP  
address for the DNS server:  
Selecting the Tone Scheme  
The user will then be asked for the tone scheme to be used on the  
phone:  
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Installation  
Selecting the Timezone  
The timezone to be used on the phone can also be selected by moving  
through the different timezone options available in the menu and  
pressing  
to activate your selection.  
If the settings explained above are set up properly, the phone will ask  
for the first account registration.  
Logging on the first account  
If no number is assigned to the phone, you will be prompted to type in  
your account name. This consists of your phone number succeeded by  
@ and the address of your registrar (for SIP) or gatekeeper (H.323).  
The phone tries to guess the correct registrar/gatekeeper address, so it  
could look something like this:  
After typing in your account name, confirm your account by pressing the  
key.  
The phone tries to register your given account name at the given  
registrar/gatekeeper. The idle screen is shown and if no crossed box but  
a phone symbol is displayed in front of your just configured identity,  
your registration has been successful.  
When this state has been reached, the time and date are displayed on  
the display.  
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2. Logon  
Mobility  
In business office environments, desktops are sometimes shared by  
different employees at the same time or at different points in time (e.g.,  
employees working different shifts, etc). The phones located at the  
desktops need to be able to cater to this.  
To ease the effort of assigning the appropriate phone number to the  
phone for each different employee, the snom220 offers so-called  
mobility features, which are described in the following subchapters.  
Logon Wizard  
If no number is assigned to the phone, it displays a logon screen.  
After pressing a button, you will be prompted to type in your account  
name.  
After typing in your account name followed by “@” and the registrar (for  
SIP) or gatekeeper (H.323), confirm your account with the ENTER key  
.
The phone tries to register your given account name at the given  
registrar/gatekeeper. The idle screen is shown and the first line displays  
your registration.  
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Logon  
snom Menu  
In idle screen, the soft key  
is assigned to the snom menu. The  
following menu items are among those available in SIP if the “Logon  
Wizard” is configured to be active. For H.323 a few items are hidden.  
Logon User  
When you select this item and press ENTER  
, you can register an  
additional account to the phone. Up to seven accounts can be assigned  
in this way.  
Logoff User  
Here you are able to logoff a registered account. A list with the currently  
assigned registrations is shown. Select the registration you want to  
logoff and press the ENTER key  
. The selected registration is logged  
off and, if it was the only one registered, the logon wizard is displayed  
again. Otherwise the idle screen is displayed.  
Logoff All  
When you select this menu item and press ENTER  
asked if you really want to logoff all users.  
, you will be  
If you confirm by pressing the ENTER key, all currently logged-in SIP  
registrations are logged off and the logon wizard is displayed again.  
Select Outgoing Line  
Selecting this menu item will provide a list of currently registered SIP  
lines.  
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Logon  
By choosing a different line, your originator phone number is changed to  
this line. This means that different people can start calls from the same  
phone with their own originator phone number and the called phone will  
display the current outgoing line information. The current outgoing line  
is marked on the idle screen with a black-colored phone icon in front of  
the registered SIP line.  
DND Mode on/off  
Independent from Logon Wizard settings, the DND functionality is  
available in the snom menu. DND is short for “Do Not Disturb”. When  
this mode is activated, incoming calls will no longer come through to the  
phone and you will be completely undisturbed by the phone. If there is  
a mailbox set up for you, the call is redirected to it. Before this mode is  
activated, you will be asked if you really want to change to this mode.  
In idle mode, “DND active!” is displayed in the bottom left-hand corner  
of the screen when DND is activated.  
Please, keep in mind that contact type “VIP” overrides the DND mode,  
i.e., a call from a number you have defined as contact type “VIP” will be  
put through to your phone even when DND is active.  
Challenge/Authentication  
In SIP, a user can also set up authentication requirements for each  
registration on the phone. The password for each account name can be  
set up via the web interface of the phone in Lin1-7 / Login Information /  
Password.  
If the authentication password is not set, or set wrongly, the account  
will not register on that domain and the phone will be challenged for  
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Logon  
that line. A challenge response will ask for the correct password. This  
can look like:  
The default mode for password input is integer. You can switch to other  
input modes by pressing  
,
, or  
. The password is hidden  
and replaced by a series of *s to keep it hidden from prying eyes.  
Repeat the same procedure for all accounts with authentication. The  
challenge responses are stored in the phone and will be used at re-  
registration or on reboot. You can also edit this information via the web  
interface.  
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3. Basic Functions  
Idle State  
In idle state the phone shows:  
the date and time,  
the first five registered users,  
the connection state of each of the first 5 registered users.  
An empty box ( ) before the account indicates that the registration  
process is in progress. A phone symbol ( ) means that the account is  
successfully registered. A black colored phone symbol ( ) means that  
the account is successfully registered and that the line is the active line  
for outgoing calls. A box with a cross ( ) signals an unsuccessful  
registration attempt.  
Dialing  
There are two methods to begin a call from the idle state of snom 220.  
You can either dial with the handset resting in the cradle and then pick  
it up, or you can pick up the handset and then dial the number. In the  
latter case press ENTER  
dialling can commence.  
to indicate that the number is complete and  
The snom 220 shows the current communication status in the display.  
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Basic Functions  
Input Modes  
Dependent on the context, various types of inputs are possible. The  
active input mode is indicated in the bottom right-hand corner of the  
display:  
123  
ABC  
Only digits can be entered.  
Upper case mode. Press * to activate lower  
case mode.  
abc  
Lower case mode. Press * to activate upper  
case mode.  
Key mapping for input:  
Moves the cursor to the left.  
Moves the cursor to the right.  
Deletes the character to the left of the  
cursor.  
Changes input mode to numbers.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
As mentioned in the table above, you use  
,
or  
to change  
the input mode. After using a specific input mode for dialing a number,  
the phone saves this mode as default for future use. If you want to use  
a different mode, begin dialing and, if the mode is wrong, choose your  
preferred mode and continue dialing.  
Dialing a phone number  
A telephone number is dialed with the numeric keypad.  
If block dial, the default setting, is on and the user has not pressed any  
keys for a few seconds, the phone will remind the user to press ENTER  
in order to start the call.  
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Basic Functions  
Key mapping:  
Moves the cursor to the left.  
Moves the cursor to the right.  
Deletes the character to the left of the  
cursor.  
Changes input mode to numbers.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Dials the number.  
ENTER  
CANCEL  
Aborts the dialing.  
E.164 numbers  
TIP  
E.164 is the standard that defines normal phone  
numbers. They may contain digits from 0-9, *,  
and #. H.323 differentiates between these  
numbers and “H.323 addresses” that may  
contain  
alphanumeric  
characters.  
Several  
Gatekeeper implementations do not differentiate  
between E.164 numbers and H.323 addresses.  
If you encounter problems, try specifying the  
number as an H.323 address.  
Dialing an H.323/SIP Address  
Enter an H.323/SIP address via the alphanumeric block. To find the “@”  
symbol, press the numeric key “1” several times.  
Key mapping:  
Moves the cursor to the left.  
Moves the cursor to the right.  
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Basic Functions  
Deletes the character to the left of the  
cursor.  
Changes input mode to numbers.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Dials the H.323/SIP address if entered  
correctly.  
ENTER  
Cancel  
Aborts the dialing.  
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Basic Functions  
Dialing an IP Address  
Enter the IP address via the numeric block. Use the “*” key instead of  
the dot (“.”) or press the hash “#” key a little longer and the hash  
character will change to a dot!  
Key mapping:  
Moves the cursor to the left.  
Moves the cursor to the right.  
Deletes the character to the left of the  
cursor.  
Changes input mode to numbers.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
ENTER  
Dials the IP address if entered correctly.  
Aborts the dialing of the IP address.  
CANCEL  
Dialing an IP Address  
TIP  
When you are calling an IP address, the called phone or computer cannot  
determine which user you want to reach. In SIP mode it is assumed that  
“anonymous” is being called and with H.323 no assumptions are made. This is  
the case with many phones and applications. Therefore, you should only use this  
method in exceptional cases, as the entry of IP addresses is rather cumbersome.  
Number guessing  
For your convenience this functionality offers you the first number from  
dialed numbers, missed calls, received calls, or numbers in the  
phonebook that match the beginning of the number you have already  
typed in.  
If the displayed number is not the one you wanted, you can either keep  
pressing the “#” key (in alphanumeric modes) to get the next matching  
number or continue typing your desired number, or press the  
function key to temporarily switch off the number guessing for this  
session of editing a phone number.  
Terminating a call  
You can end a call by setting the handset on its cradle, pressing the  
hook switch, or pressing CANCEL  
call and return to the idle state.  
. The snom 220 will terminate the  
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Basic Functions  
Incoming Call  
When your snom 220 is called, it rings and displays the following  
screen.  
Accepting a Call  
Picking up the handset or pressing ENTER  
snom 220 is now in a call.  
will accept the call. The  
Press  
/
for scrolling to the next / previous set of softkeys.  
Key mapping:  
,
Hold / Resume call  
Transfer call  
Handsfree mode on/off  
Scroll forward to next softkey set  
,
Scroll back to previous softkey set  
Mutes / Unmutes the microphone  
Changes the volume  
See below for a further description.  
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Basic Functions  
Denying/Blocking a Call  
When the snom 220 signals an incoming call, you have the option to  
deny the call with  
.
If you decide to press  
will always be denied automatically. If  
, the caller will be placed on the deny list and  
is not displayed, it is  
switched off in the settings. You can enable it again via the web  
interface (“Deny All” feature).  
Adjusting the Volume  
While making a call, you can use the  
and the  
keys to  
the right of the display to increase or lower the volume.  
Key mapping:  
Reduces the volume in steps.  
Increases the volume in steps.  
Sets the volume and returns.  
ENTER  
Returns without setting the volume.  
CANCEL  
Mute / Unmute  
To mute the microphone during a call, press the softkey “Mute” or  
Press the softkey “Unmute” or to enable the microphone again.  
.
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Basic Functions  
Handset / Handsfree / Headset  
The snom220 supports calls being made while using the handset or the  
handsfree capability. During a call it is possible to switch between both  
modes by pressing the function keys  
on the right side beside the display.  
/
or the Speaker key  
If a headset is connected and the audio output is set to headset (“RJ  
Conn” or “Chinch”), the snom220 will treat the headset as the output  
device for calls. When the snom 220 is used in a call center  
environment, the connected headset will be the default setting for  
speaking on the phone. The ENTER key  
incoming calls.  
is therefore used to accept  
Key mapping:  
Switch to handsfree mode and back.  
Accept incoming calls in headset mode.  
Returns the phone to the idle state.  
/
ENTER  
CANCEL  
Programmable Keys  
The five keys to the right of the numbers block are the programmable  
function keys that have the following options:  
Line  
Destination  
Intercom  
Park Orbit  
Voice Recorder  
DTMF (H.323 only)  
Each of these buttons has an LED indicating the status of the respective  
programmable key at any given time.  
Some features are common to all keys:  
Pressing a key when its LED is blinking and the phone is ringing will  
receive the call.  
Pressing the key when a call is in progress at that key, as indicated by  
the constantly lighted LED, will put the call on hold.  
Pressing the key twice while editing a number for dialing at that key,  
with the receiver in the cradle, will return the phone will go to idle state.  
Pressing the key twice while editing a number for dialing at that key,  
with the receiver off the hook, will erase the number.  
Each of these different options will now be explained in detail.  
Line  
'Line' can be used in one of the following ways:  
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Basic Functions  
a. To map a local SIP line: A user can assign the local lines to  
programmable keys by selecting this option and setting the URL of the  
local line as argument to that key setting. For example, if a phone has 2  
registrations, [email protected] and [email protected], the user has  
the option to map two programmable keys to each one of these lines by  
selecting 'Line' and setting the respective SIP URL as argument. In this  
case, all the calls to a particular line will go to its matching programmable  
key, e.g., if [email protected] is mapped at key P2, the LED on that key  
will start blinking when there is an incoming call on that line. Similarly, if  
the user presses P2 in the idle state with the receiver on hook,  
[email protected] will become the active line for that call. This feature  
enables the customer to use his different SIP accounts as he would use  
different PSTN phone lines. It is also possible to assign different ringtones  
to each SIP line in order to make an acoustic differentiation. This can be  
done either on the proxy or on the phone’s web interface page Set-  
up/Config Line 1-7.  
b. To map a SIP URL for call pickup: Selecting this option with a SIP URL  
as argument will subscribe to dialog state changes of the phone with that  
registration. The LED on that key will show the status of the registration  
as idle, talking, or ringing by varying frequencies of blinking. This allows  
the user to pick up a ringing call remotely by simply pressing a key. An  
example of its usage would be the mapping of the office reception phone  
line to the phone of a secretary. If for some reason a ringing phone is not  
answered at the reception, the secretary can see its ringing status by the  
blinking LED and pick up the call by pressing that programmable key.  
This way, no calls go unanswered.  
c. Free Key: 'Line' is also the default setting for the programmable keys. If  
no argument is set, the keys are treated as free. Outgoing and incoming  
calls not bound to any other key go to the first such free key.  
Destination  
The user can map a SIP URL to a particular programmable key by  
setting this option and providing the URL as argument. This option can  
be used in the following ways:  
a. If the sip line [email protected] is bound to key P3 with this option, all  
calls coming to the phone from this number will go to P3.  
b. If P3 is pressed during the idle state, [email protected] will be dialed,  
as it is set as destination for this key.  
c. In the ringing state, if the call comes from any line other than  
[email protected], pressing P3 will transfer the incoming call to  
[email protected].  
Intercom  
This option is similar to 'Destination' with the exception that pressing  
the key bound to 'Intercom' enables the intercom mode and the phone  
will be directly connected to the set snom phone if authentication is set  
up properly. This feature is useful in an office environment as a quick  
access key to connect to the operator or the secretary.  
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Basic Functions  
Park orbit  
snom4s provides its customers with the opportunity to set up parking  
orbits on the media server, where calls can be parked and picked up.  
The option 'Park Orbit' enables the phone to provide this feature.  
Suppose key P4 is bound to [email protected]. The LED on this key  
now displays the status of calls, if any, parked on this orbit. A blinking  
LED indicates that a call is parked there; the user can pick up this call  
by pressing P4. Pressing P4 during a call will park it at  
[email protected] until the same or another user picks it up later.  
The caller will hear the holding music. This feature is useful for call  
center environments and all places where there is a great inflow of calls  
and some kind of queuing is required to manage them.  
Voice recorder  
This option can be set up with a valid voice recording account. Suppose  
that [email protected] offers voice recording and is bound to key P5 on  
the phone. Its usage is as follows:  
During a call, the user is able to record his conversation with the other  
party by pressing P5. Pressing button P5 again will end the recording  
process.  
The recorded media can later be listened to by accessing the recorder  
account [email protected].  
This feature is also useful for recording short messages or memos to  
self. By pressing P5 in the idle state a user can record an important  
message to be listened to later.  
The same applies to the recording of a debate or discussion, to keep  
audio minutes of a meeting, or to record an important conference call  
hosted on the phone.  
DTMF  
In H.323 mode, this line type offers the ability to set up the  
programmable keys as additional function keys concerning PBX  
functionality controlled via DTMF key codes. Upon a key press to the  
programmable key set up as DTMF line type, the specified number  
sequence is dialed as DTMF key codes.  
Main Menu  
By pressing the MENU key  
in the idle state the main menu is  
invoked. The following submenus are available: Phonebook, Call List,  
Deny List, Tones, Settings, and About.  
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Basic Functions  
Key mapping:  
Moves the cursor down.  
Moves the cursor up.  
Enters the submenu.  
/ENTER  
/CANCEL  
Returns the phone to the idle state.  
Adjusting the Volume in Idle Mode  
Via the main menu item “Tones”, the following window is activated:  
Here, the volume of the casing speaker, handset speaker, or headset  
speaker can be adjusted. Select one of the three choices.  
A tone is played back at the selected volume and you can decide on the  
desired setting.  
Key mapping:  
Reduces the volume in steps.  
Increases the volume in steps.  
Sets the volume and returns.  
ENTER  
Returns without setting the volume.  
CANCEL  
Ring Tones  
Via the main menu item “Tones” the following window is called up:  
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Basic Functions  
Select the submenu “Ringtone”. Here, the ring tone can be set.  
The selected ring tone is played back and you can decide on the desired  
setting.  
Key mapping:  
Moves the cursor to the next ring  
tone.  
Moves the cursor to the previous ring  
tone.  
Activates the selection and returns.  
/ENTER  
Returns without changing the ring  
tone.  
/CANCEL  
About  
Via the main menu item “About”, the following window is activated:  
This indicates the type of your phone, the software version, the  
currently assigned IP address, and the MAC address of the phone.  
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4. Advanced Functions  
Hold and Resume  
When a call is in progress, pressing the flash key  
or  
(language dependent) puts the call on hold, i.e., the speech is set to  
mute (neither party can hear the other).  
Pressing the flash key again will resume the call. While a call is on hold,  
you can establish another call by dialing the desired number.  
When more than one call is on hold the following window appears.  
Select the party you wish to talk to with the keys  
ENTER/Flash key to get connected.  
/
. Press the  
Key mapping:  
The call being held is terminated.  
CANCEL  
Resumes the call being held.  
,
Transfers the call being held.  
*,#,digits  
,
Can be used to initiate another call.  
Handsfree mode on/off.  
Transfer  
Direct Transfer  
During a call press the transfer key  
to put the connected party on  
hold, then dial the number the call is to be directly transferred to.  
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Advanced Functions  
As soon as you press ENTER  
, the snom 220 will transfer the held  
party to that number.  
Key mapping:  
Moves the cursor to the left.  
Moves the cursor to the right.  
Deletes the character to the left of the  
cursor.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Changes input mode to numbers.  
The snom 220 transfers the call.  
ENTER  
Aborts the transfer.  
CANCEL  
Consultation Transfer  
During a call in progress, put the connected party on hold by pressing  
the hold key  
While the call is on hold, you can establish a second call by dialing the  
desired number and pressing ENTER . When the second call is  
or  
.
established, you can consult the second party, e.g., to announce the  
call. You can connect the two parties by pressing the transfer key  
or the hook on the handset.  
Conference  
If the phone is connected with two calls, one on hold and one active,  
you can connect all three phones in a conference by pressing the  
function key  
.
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Advanced Functions  
By pressing the function key  
the calls are dropped.  
, the conference is disconnected and  
Call Diversion  
All kinds of call diversions can be set, changed, and deactivated in the  
menu “Settings/Redirection”.  
Diverting all calls  
By setting the option “Settings / Redirection / Redirection” to “always”,  
every incoming call is diverted immediately to the number set in  
“Settings / Redirection / Redirect Target” without the phone ringing.  
To disable this feature set the “Settings / Redirection / Redirection” to  
“never”.  
Divert when Busy  
By activating the option “Settings / Redirection / Redirection / When  
Busy”, every incoming call is diverted to the number set in “Settings /  
Redirection / Busy Target” if another call is already in progress.  
Divert when not answered  
You can set the number of seconds in “Settings / Redirection / Redirect  
Time” after which every incoming unanswered call is diverted to the  
number set in “Settings / Redirection / Redirect Target”.  
Note: To activate call divert immediately, see above.  
Call Completion  
The call completion functionality allows the user to establish calls  
successfully when the other party is busy or not answering.  
On “busy” (CCBS)  
When the party you are trying to reach is busy, the following window  
will appear during a call attempt:  
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Advanced Functions  
By pressing the  
key, call completion is activated and the phone  
waits for the other party to return to idle.  
If you wish to receive and make calls while you are waiting for call  
completion, press  
again to return to the idle screen which now  
shows the letters ‘CC’ in the lower left corner. (Pressing “CANCEL”  
cancels the call completion procedure.)  
When the other party becomes idle, the following window appears:  
If you press the  
key, the phone will dial the number again in order  
to establish a connection to the other party.  
On “no response” (CCNR)  
When the phone signals “no response” to your call, activate call  
completion by pressing the CC key.  
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Advanced Functions  
The phone will now wait for the dial destination to become active again.  
If you wish to receive and make calls while you are waiting for call  
completion, press again to return to the idle screen which now  
shows the letters ‘CC’ in the lower left corner. (Pressing “CANCEL”  
cancels the call completion procedure.)  
When the other side is available, the display will prompt you to dial the  
number again.  
DTMF Tones  
During a call, e.g. with a voicemail system, pressing the digits 0-9, *, or  
# will generate and send DTMF tones to the other party.  
Short Messages (SMS)  
Incoming short messages are automatically displayed when the phone is  
in idle state.  
Key mapping:  
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Advanced Functions  
Scrolls the message forward.  
Scrolls the message backward.  
Shows the next message or the idle  
screen.  
ENTER  
Short messages can be received from clients like Microsoft Messenger,  
etc.  
Message Waiting Indication (MWI)  
If you did not answer a call and the mailbox recorded a message for  
you, the idle screen shows that a recorded message is waiting for you.  
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Advanced Functions  
On the idle screen, the letter icon to the left of the SIP registration line  
indicates the registered phone number the call was recorded for.  
After you press the function key , the phone displays more  
information about the number of new and old recorded messages.  
To connect to the mailbox in order to listen to the recorded messages,  
press function key  
or take the handset off the hook.  
Key mapping:  
Scrolls the message forward.  
Scrolls the message backward.  
Call mailbox to listen to recorded  
messages.  
,
Handset  
off hook  
Back to idle screen.  
ENTER  
Conducting a Software Update  
If your provider/administrator is offering you a new software version for  
your phone, a “SW” is displayed in the left lower corner of the idle  
screen.  
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Advanced Functions  
In this case, an additional entry “SW Update” can be found in the snom  
menu ( ).  
Pressing the  
/ENTER key reboots your phone after a few seconds.  
During boot-up the phone asks you whether or not it should proceed  
with the boot loader and/or firmware update.  
Additional PBX Features  
When the phone is set up to use H.323 protocol, additional PBX features  
are available if they are enabled.  
Pickup  
If someone else’s phone is ringing and you want to pick up the call on  
your own phone, press the  
key or the function key  
at the  
idle screen to scroll to the second set of available function keys. Then  
press the function key  
.
Conference  
If the phone is connected with two calls, one on hold and one active,  
pressing function key  
conference.  
will connect all three involved phones in a  
Pressing function key  
will disconnect the conference.  
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5. Call Register  
Phone Book  
The snom 220 contains an internal phone book that can be reached  
from the phone’s idle state by pressing the phone book key  
.
Key mapping:  
Scrolls to the next item.  
Scrolls to the previous item.  
Enters the edit mode for the selected  
entry.  
Deletes current item.  
ENTER  
Off Hook  
/
Dials the number of the selected entry.  
Returns to the idle state.  
CANCEL  
Adding an entry  
In order to add a new entry, go on to the list item <New item> and  
press  
.
Enter the name and phone number and confirm each item by pressing  
ENTER.  
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Call Register  
The title of the window indicates which input is expected. Pressing  
CANCEL aborts the addition of a new entry.  
Key mapping:  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Changes input mode to numbers.  
Deletes the character to the left of the  
cursor.  
Moves the cursor to the left.  
Moves the cursor to the right.  
Accepts the entry.  
ENTER  
Cancels the entry.  
CANCEL  
Editing an entry  
After pressing the edit key  
on the entry to be modified, the name  
and phone number will be brought up in sequence. Confirm each item  
by pressing ENTER  
The title of the window indicates which input is expected.  
.
ENTER  
accepts the data, CANCEL  
aborts the editing.  
Key mapping:  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Changes input mode to numbers.  
Deletes the character to the left of the  
cursor.  
Moves the cursor to the left.  
Moves the cursor to the right.  
Accepts the entry.  
ENTER  
Aborts the editing process.  
CANCEL  
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Please, keep in mind that the contact type “VIP” overrides the DND  
mode, i.e., calls from someone on your “VIP”-list will be put through to  
your phone even when DND is ‘active!’.  
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Call Register  
Export  
To save the content from an already filled phonebook, right-click onto  
the “Click here” link at the bottom of the “Addressbook” page on your  
built-in web interface (“Click here to save the current address book”).  
With “Save Target As…” you can save the phone book content in a  
comma-separated file containing the current address book entries (CSV  
= Comma-Separated Values).  
Import  
To load an address book from a file, click on the “Browse” button on the  
“Addressbook” page in the section entitled "Import Address Book  
(CSV)". Select the pre-stored CSV file from the storage medium and  
then press the 'Load' button.  
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Call Register  
It should not matter if some of the entries already exist in the phone  
book. They will not be duplicated if both name and number are exactly  
the same respectively. If the number field is the same but the name is  
not, the file entries will replace the old ones (just like editing the old  
entry to save a different name). If the name is the same but the  
number is not, a new file entry will be made.  
You will first receive a  
Preview  
A preview feature is available while importing files for the phone book.  
One way to do this is to use a Comma Separated Values (CSV) file. A  
CSV file has entries separated by a comma (and without spaces  
between the comma and the preceding and following entry). It can look  
like this:  
The first line represents the header, which shouldn’t be imported, that is  
why the option “without header” has to be selected in this case.  
Selecting a CSV or Unicode TAB-separated file is possible through the  
web interface, as shown in the following:  
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Call Register  
After choosing a file, a preview of the selected file contents will be  
shown.  
Now assign the three possible data types (name, number, contact type),  
which can be imported, to the columns in the preview representing  
those kinds of data.  
Once satisfied with the preview, pressing “Save” will save the file  
contents to the phone book, which could look like this:  
These new entries will become part of the existing phonebook. They will  
be stored on the flash and can be retrieved anytime until they are  
deleted or a factory reset is performed.  
Call Lists  
The snom 220 maintains lists of missed, received, and dialed calls that  
can be accessed by pressing the call list key from the idle state.  
For example, after choosing the missed calls, the most recent missed  
call is displayed first.  
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Call Register  
Key mapping:  
Scrolls to the next call.  
Scrolls to the previous call.  
Shows details of this call.  
Deletes the current entry.  
ENTER / Dials the number of the current entry.  
Off Hook  
Returns to the idle state.  
CANCEL  
By pressing the  
key you can get details about this missed call.  
Information regarding “To”, “From”, “Time”, and “Missed” (i.e., number  
of missed calls) is provided.  
Key mapping:  
You can use the current entry for your  
next call and possibly edit the number  
before calling it.  
Saves the current calling party to the  
phone book.  
Step to the next kind of information: To,  
From, Time and Number of calls  
Deletes the current entry.  
ENTER  
Off Hook  
/
Dials the number of the current entry.  
Returns to the idle state.  
CANCEL  
Speed Dial  
The snom 220 supports speed dial of up to 33 numbers. These are  
mapped onto the numbers 0-30, *, and #.  
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Call Register  
Dialing  
Speed dialing is initiated by typing in a number from 0-30, *, or #,  
respectively, and confirming with the key. In this way, 33 speed  
dial numbers can be called up without having to look at the display.  
Editing speed dial entries  
Set up the speed dial numbers on the built-in web interface page of  
your phone.  
Deny List  
The snom 220 gives you the option of putting numbers on a deny list to  
prevent calls from these numbers.  
Browsing  
You get to the deny list window via the submenu “Deny List” on your  
phone’s display.  
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Call Register  
The numbers to be denied are displayed here.  
Key mapping:  
Scrolls to the next number.  
Scrolls to the previous number.  
Deletes the current number.  
Pressing this on <New Item> will add a  
new entry.  
Returns to the idle state.  
CANCEL  
Or use the web interface “Address Book” page:  
The numbers to be denied are displayed and marked with contact type  
“deny”.  
Adding a number  
While you are being called you can press the deny list key  
. This  
will not only deny the present call, but will also add the number to the  
deny list.  
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Call Register  
In addition, any number can be added to the deny list by selecting  
<new item> in the deny list of the phone directly.  
After the number has been entered, it is added to the deny list.  
Or add a new deny list entry on the “Address Book” webpage and mark  
it “deny”.  
Pressing  
on an incoming call will only deny that particular call and  
will not put the caller on the Deny List.  
Removing a number  
There are three ways to remove a number from the deny list: (1) Press  
the “clear” key  
on your phone while viewing the deny list. (2) On  
the “Address Book” webpage click onto the small red crossed icon at the  
end of the line you want to delete. (3) Change the contact type on the  
“Address Book” webpage!  
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Settings  
6. Settings  
A long list of different settings is available that can be used to control  
the behavior of the snom220. These settings are explained in the FAQ  
“Configuring snom phones for Mass Deployment”, which you will find  
under http://www.snom.com/faq_en.php. The FAQ “How can I  
update a snom phone?” describes the different options available to  
update the phone, also via setting file.  
The settings can be specified in different ways:  
Via the phone  
Via web browser on a PC  
Settings via Phone  
Press the MENU key  
function keys and  
in the idle state of the phone. With the  
you can navigate in the menu. Scroll to  
the submenu “Settings” and press ENTER  
.
You are now in the “Settings” menu, which has the following submenus:  
Redirection  
Base  
SIP  
Codecs  
Miscellaneous  
Network  
Key Mapping  
Administrator Mode  
Reset Values  
Use the keys  
and  
to scroll within the “Settings” menu. Press  
the ENTER key to select a submenu.  
Now the list of settings of the selected submenu is displayed. Use the  
and  
to scroll within the list. By pressing ENTER  
the value  
of the setting can be viewed or modified.  
Some entries cannot be set to any variable value. Instead they offer a  
list of allowed values from which one has to be selected. Use the  
and  
to scroll within the list to set the desired value. Press ENTER  
to set the value. Press CANCEL if you decide not to change the  
value.  
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Other settings require the editing of numbers or strings. This can be  
done with the keypad of the phone. Digits are entered directly via the  
keys and letters can be called up by pressing a key repeatedly. You can  
toggle between lower case letters ("a") and upper case letters ("A") with  
the * key.  
Key mapping:  
Moves the cursor to the left.  
Moves the cursor to the right.  
Deletes the character to the left of the  
cursor.  
Changes input mode to capital letters.  
Changes input mode to small letters.  
Changes input mode to numbers.  
Accepts the entry.  
ENTER  
Aborts the changes.  
CANCEL  
Settings via Web Browser  
It is usually more convenient to use a web browser to configure the  
settings. The snom 220 has an integrated web server for this purpose.  
If the phone is connected to a network that provides DHCP, it can be  
immediately accessed via the browser after boot-up. If you do not want  
to use DHCP, you must specify the IP address, netmask, gateway, DNS  
domain, and DNS server statically to ensure correct operation.  
Illustration 1: Web configuration  
Start your web browser.  
Enter the IP address of the phone as the URL (e.g. 192.168.0.100). (If  
you do not know the IP address, you can look it up on the phone’s  
display by pressing the menu key, scrolling to the “About” submenu,  
and pressing ENTER  
.)  
On the left side of the web page there is a selection menu.  
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Settings  
Just click on the desired submenu and the current settings of this  
submenu will be displayed on the right.  
You can now modify and store the values by using the mouse and  
keyboard. To store the changes made, click on the SAVE button. Do  
not press SAVE if you want to discard the changes.  
Settings Options  
The following options are available in administrator mode via web  
interface.  
Setup Preferences  
GENERAL INFORMATION  
The webpage may look like this:  
Webinterface Language  
The web interface can be displayed in different languages independent  
from the current language used on the phone (see below).  
Language  
Your phone is able to show all display texts in different languages. Here  
you can select the language that suits you the best.  
Number Display Style  
Specifies the display of incoming and outgoing calls:  
Full Contact: Shows the complete URL  
Name: Only the name is displayed  
Number: Only the number is displayed  
Name + Number: Name and number are displayed  
Tone Scheme  
Select the dialtone you prefer for your phone.  
MWI Notification  
Specify the type of MWI notification that will inform you when a new  
message arrives.  
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Settings  
MWI Dial Tone  
Set the dialtone to stutter mode in case of an active MWI.  
Use Headset Device  
Select the headset device you would like to use. Select “none” if you  
don’t want to use a headset.  
Use Backlight  
The snom220’s display has a built-in backlight. If you set this function  
to ‘on’, the backlight will be turned on when you press a key on the  
phone. It is automatically switched off after a short time.  
REDIRECTION  
You can have all incoming calls diverted to a specific number.  
The following options for redirection are available:  
Never: This deactivates all call diverts.  
Always: All calls are diverted to the number specified in “Number  
Redirect”.  
When Busy: When a call is in progress, any other call made to that  
number is rejected and will receive a busy indication. The phone can be  
set in such a way that the second caller is diverted to another number  
set in “Number Busy”.  
After Timeout: Calls are diverted after the timeout in seconds specified  
in “Timeout” to the number specified in “Number Redirect.  
The following fields for diversion are available:  
Timeout  
Specifies the timeout in seconds after which the call should be diverted.  
Number redirect  
Specifies the number to which the calls should be diverted.  
Number busy  
Specifies the number to which the calls should be diverted if the phone  
is busy.  
RINGTONES  
This section looks like the following:  
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Settings  
Default Selection  
Select the criterion according to which the ringing melody is selected for  
incoming calls, i.e., based on the caller or callee address.  
Contact Type Specific Ringers  
Specify the ringing melodies for different contact types from your  
personalized phone book entries. These melodies will be used only if you  
selected “Source” in the “Default Selection” setting above.  
Ringer Device for Headset  
In case you want to hear the ring tone via the headset only, choose  
“headset”, otherwise “speaker” as usual.  
Default Ringer  
Choose the default ringing melody for your snom phone through this  
setting.  
Custom Melody URL  
Specify an URL to your own ringing melody. The type of files that should  
be supplied to the phone is: "PCM 8 kHz 16 bit/sample (linear) mono  
WAV”.  
AUTO ANSWER  
snom phones have auto-answering capabilities. Through these settings  
you can control the behavior of auto answer. This section looks like this:  
Auto Answer  
You can disable auto answer on your phone by turning this setting off.  
Turn it on to enable auto answer again.  
Auto Answer Indication  
In case you want to be informed when an incoming call is automatically  
answered from your phone, select “on”.  
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Settings  
Type of Answering  
If auto answer is on, you can select how you would like to receive the  
incoming call, i.e., in hands free mode or on the handset.  
PRIVACY SETTINGS:  
Presence Inactivity Timeout  
This is the time after which, if there is no activity, presence is set to  
“closed”. The default is 15 minutes. If it is set to 0, the presence stays  
closed and nothing is published. In other words, presence is disabled  
for all practical purposes.  
Call Line Identification Presentation (CLIP)  
Show or hide your own phone number when making a call.  
Call Line Identification Restriction (CLIR)  
Reject or accept anonymous incoming calls.  
Setup Speed Dial  
Speed Dial Table  
Set up your speed dial numbers via this webpage.  
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Settings  
Function Keys  
You have the option to program up to sixty-five keys with LEDs. This  
section helps you achieve this objective. Program the keys P1-P5 or  
EK1-EK60 to perform any of the 5 different functions. They include  
“Line”, “Destination”, “Intercom”, “Park Orbit” and “Voice Recorder”.  
Each of these was explained in detail in the chapter entitled  
“Programmable Keys”. You also need to specify the number for each of  
the keys in order to enable the specific key utility to work.  
The keys EK1-EK0 can be used via up to three cascaded external  
keyboards of 20 keys each.  
Setup Line1-7  
Through this page you can set up SIP lines you would like to use on  
your phone. You have the option to set up to seven lines. Each line  
setting looks like the following:  
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Settings  
LOGIN INFORMATION  
Display Name  
Set the name you would like to associate with a line, e.g., “John Smith”.  
Account  
This is the account with which you would register to a registrar/proxy.  
It could be alphanumeric, e.g., “js”, or based on digits like “701” in the  
screenshot above.  
Password  
This is the password to be used for challenge responses. In order to  
protect privacy, passwords are not displayed in their true form.  
Registrar  
Specify the IP address or URL of the registrar/proxy with which you  
would like to register this account.  
Mailbox  
If you have set up a mailbox, specify the account name for that mailbox  
here to associate it with this particular SIP line.  
Ringtone  
Through this setting, you can select a distinctive ring tone that will alert  
you when a call comes in on this particular line. In order for this to  
work, you will have to have specified “Destination” in the “Default  
Selection” in “Preferences”.  
ADVANCED LINE SETTINGS  
Outbound Proxy  
You can specify the outbound proxy here.  
Dial Plan String  
You can set up the dial plan for this line here.  
Q-Value  
You can set up the probability of registration for each line through this  
setting. The default is 1.0.  
Proposed Expiry  
You can select the time when the registration on this line expires. The  
phone will send a fresh re-registration request at the expired time.  
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Settings  
Transport  
Select the protocol for transport layer communication through this  
setting.  
Offer ICE  
Choose whether you want to use ICE or not.  
Codec 1-5  
You can select the preferred order for the potential used codec. The  
available options are G.711 ulaw, G.711 alaw, GSM, G.726-32 and  
G.729a.  
Packet size  
Select the packet size in bytes. It affects only ulaw and alaw codecs  
(other codecs have fixed packet size). Eighty (10 ms), 160 (20 ms),  
240 (30 ms) and 320 (40 ms) bytes are available.  
Setup Advanced  
NETWORK  
With these settings you can set up the basic network settings of your  
phone. The web interface for this looks like the following:  
DHCP  
Turn on or off the use of DHCP with this option.  
IP address  
You can change the IP address of the device through this setting.  
Changing this parameter requires a reboot. This parameter is  
mandatory in order to enable the ethernet connection.  
Netmask  
Change the netmask for the device. Changing this parameter also  
requires a reboot.  
Phone name  
Change the hostname of the phone here. If this parameter is available,  
it is used for identifying the device in SIP signaling.  
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Settings  
IP Gateway  
This setting shows the IP address of the default IP gateway (not the  
VoIP gateway). It is the address to which the packets are routed if the  
wanted packet address is not in the current subnet. Setting up this  
parameter is mandatory in order to reach an external network.  
DNS  
Domain  
Specify the DNS domain for your phone here.  
DNS Server 1  
Specify the IP address of the DNS server for your network here.  
DNS Server 2  
Specify the IP address of a backup DNS server for your network here.  
TIME SETTINGS  
NTP Time server  
Specify the URL or IP address of the NTP server here.  
Timezone  
Select the time zone of your geographical location through this option.  
HTTP  
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Settings  
User  
Here you can select the HTTP username for your phone.  
Password  
Set up the HTTP password for your phone here.  
Authentication Scheme  
Define whether “Basic” or “Digest Authentication Scheme” should be  
used.  
HTTP Proxy  
You can select the HTTP proxy address for your phone here.  
HTTP port  
Specify the HTTP port to be used by your phone through this setting.  
HTTPS port  
Specify the HTTPS port to be used by your phone for HTTPS  
connections.  
Register http contact  
Should the phone add the http URL of the phone as additional contact  
information?  
Web server connection type  
Set up the type of connection the phone’s web server is willing to  
answer to:  
http  
https  
http & https  
off  
Phone Behaviour  
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Settings  
Call Completion  
Turning this setting to “On” will prompt the user to activate call  
completion, if possible, while dialing a number. When the dialed party  
becomes available again, your phone will be able to automatically redial  
the number.  
IDNA (RFC 3490) Support  
Switch on support for Internationalizing Domain Names in Applications  
(IDNA).  
Action on Ethernet cable replug  
Choose the action that should be performed after the network  
connection is reestablished: “Do nothing” or “reboot”.  
Auto Dial  
This setting is switched off by default. You can set a timeout after  
which a number is dialed automatically without pressing the  
taking the handset off the hook.  
key or  
Number Guessing  
Here, the number-guessing functionality can be activated or  
deactivated.  
Block URL Dialing  
You can block the dialing of SIP URLs by turning this setting on. In this  
case only numerics will be allowed as input.  
Deny All  
When turned on, this setting shows the “Deny All” softkey on incoming  
calls so that incoming numbers can be put on the “Deny List”. Turning  
the setting off will disable this feature.  
Challenge Response on Phone  
As explained in an earlier chapter, snom phones can handle challenge  
responses on the phone. Turning this setting off will disable this feature  
and you will only be able to handle authentication through the web  
interface of the phone.  
Broadsoft Call Control Features  
Support for Broadsoft call control can be enabled here.  
CMC (Client Matter Code)  
When this setting is turned on, the user is offered a softkey during a  
call; its use sends a unique code to the server using the INFO message  
in SIP. This code can later be used for billing or book keeping along  
with the call ID of that call.  
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Settings  
Dialog-Info Call Pickup  
snom phones subscribe to the status information of SIP URL's mapped  
as “Destination” on the programmable keys. By turning this setting on,  
the user will be offered a pickup if a mapped destination gets a call and  
is in the ringing state. The display will change in the idle state to show  
the source and destination of that call and the user can pick it up by  
pressing the ENTER key  
as the destination is ringing and disappear when the user of the phone  
offering pickup presses CANCEL , when the call is connected, when  
. The pickup offer will be available as long  
the call is cancelled by the caller, or when a third party picks up the call.  
Call Waiting Indication  
You can enable or disable the CWI on the phone through this setting.  
Dialtone during Hold  
Turning this setting on will produce a dial tone when a call is being held  
and the user is trying to dial a second number. A dial tone will not be  
played when this setting is not turned on.  
Disconnect on On-hook  
Sometimes it is useful to disable the disconnection of a call when the  
handset is placed on-hook, e.g., during conference calls or handsfree  
mode, etc. This can be achieved by turning this setting off.  
Keys  
Here you can change the key behaviour on the phone to your wishes.  
The web page may look like this:  
Break Key  
The “Break” key on the phone can be used either to disconnect the  
connected call or as a “Transfer” hard key. You can make that choice  
through this setting.  
Transfer on On-hook  
In case the transfer feature triggered by on-hook is confusing you, you  
can switch it off here.  
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Settings  
Block DND  
Users have an option to disable the DND feature. This can be achieved  
by turning the “Block DND” setting on. If this setting is turned on, the  
users of the phone will not have the DND option on their phones. This  
can be useful in call center environments.  
Logon Wizard  
Turn this setting on if you want to use the Logon wizard. Switch it off to  
disable the Logon wizard.  
PRESELECTION  
This section looks like this:  
Prefix  
Specify the number to be prefixed to each dialed number.  
AUDIO  
Set up audio-related settings on your phone. These settings may look  
like this:  
Mute Microphone  
Setting this to “on” will mute the microphone of the phone. Turning it  
off will enable the microphone again. Specify the number to be prefixed  
to each dialed number.  
Disable Casing Speaker  
Turn this setting on to disable your speaker.  
DTMF echo on Speaker Phone  
Option to switch off DTMF echo.  
Call Releases Notification  
Turn this on to enable late media when a call is released. Turning it off  
will take you directly to the idle state when a call drops.  
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Settings  
Advanced Network  
In this section you can alter the advanced network settings of your  
phone. This page has the following settings:  
NAT Detection  
Users can select the kind of NAT according to their network through this  
setting. Available options are “Automatic”, “UPnP”, “STUN”, “Static” or  
“Off”. The default is “Automatic”.  
STUN Server (IP-addr:port)  
If you selected “STUN” as NAT detection type, specify the address of the  
STUN server followed by the port number.  
STUN Binding Interval (seconds)  
Similarly, set the STUN binding interval time in seconds through this  
setting.  
Use Mapped Address  
Through this setting you can switch the mapped address feature on or  
off.  
Dynamic RTP port start  
If you want to set up the RTP port dynamically, give the start port  
number in this setting.  
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Settings  
Dynamic RTP port end  
Give the last port number in this setting for dynamic RTP port selection.  
Type of Service (TOS)  
You can set up the TOS in this setting. A value could, for example, be  
160.  
DTMF Payload Type  
Set up the payload type for Out of band DTMF here, e.g., 101.  
Network Identity (host name)  
Specify the host name of the Network identity through this setting.  
Network Identity (port)  
Set the port number of the network identity here.  
Local SIP Port  
Should both network identity settings following below be used instead of  
the default SIP port?  
SIP T1 (ms)  
Set the re-try timer 1 in milliseconds here.  
SIP Session Timer (s)  
A user can specify the session timer for SIP in seconds here.  
Dirty Host TTL (s)  
Specify the “Time to Live” (TTL) for dirty hosts in seconds through this  
setting.  
SIP Max Forwards  
If you want to specify the maximum number of forwards, you can set it  
here.  
ENUM Suffix  
When using ENUM, you can specify a suffix here, if desired.  
Music on hold server  
If you have configured a “music on hold” server, specify that contact  
here. Music from this server will be played to the other side when you  
hold a call.  
Use user=phone  
Turn this setting on if you want to use user=phone in SIP URLs. Select  
“off” to disable it.  
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Settings  
Publish Presence  
Control the “presence” status information through this setting.  
Refer-To Brackets  
To switch additional brackets on or off in the Signaling for Refer-To.  
Require PRACK  
To force the usage of PRACK, choose “on” here.  
Symmetrical RTP  
In case you want to use symmetrical RTP, switch it “on” here.  
Offer GRUU  
This setting is used to toggle the support for GRUU (Globally Routable  
User agent URL's) in SIP.  
Offer MPO  
Using this setting, the user can turn the Media Path Optimization on or  
off.  
Challenge for Dialog  
Turning this setting on enables a challenge response for dialogue  
messages.  
Challenge for Reboot  
This setting enables/disables a challenge response for remote reboot  
request.  
Challenge for Check-Sync  
Turning this setting on enables a challenge response for Check-Sync.  
UPDATE  
Update Policy  
You can select the best possible update policy you would like to adopt  
for your phone.  
Setting URL  
Set up the URL of the settings server from where you would like to  
obtain the configuration file to configure your phone.  
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Settings  
VLAN  
Id and Priority  
Enter your VLAN ID (0..4095) and Priority (0..7) separated by a space  
(e.g., "128 5").  
DEBUG  
LCServer  
Specify the IP address of the remote LCServer if you want your phone  
to connect to it. Normally, you would not need to set the LCServer  
setting. It is for company internal development only.  
SECURITY  
Administrator Mode  
This setting allows you to switch between User and Administrator modes  
of the phone.  
Administrator Password  
In Administrator mode, you can set up the admin password through this  
setting. A password can be an alphanumeric string of any length.  
Administrator Password (Confirmation)  
You have to confirm the password to ensure no typing errors have been  
made.  
Certificates  
Upload Server Certificate  
Here you can upload your own server certificate for secure https  
communication.  
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Settings  
Setup Update  
MANUAL SOFTWARE UPDATE  
Here you can select the binary files to be put on the phone yourself.  
This section may look like:  
Bootloader  
Specify the address for the bootloader file you would like to place on the  
phone through this setting.  
Firmware  
Similarly, you can provide the firmware address in this setting.  
Press the “Load” button if you changed anything in these settings and  
would like to load the binary files through the newly provided addresses.  
H.323  
This mode of settings will be available to you if your phone is operating  
in H.323 mode.  
E.164 Number  
Set the E.164 number by which you would like to identify your phone.  
H.323 ID  
Alternatively, you can specify the H.323 ID for your phone.  
URL ID  
Set the H.323 ID in the form of an URL through this setting.  
GK/GW Mode  
Through the GK/GW Mode setting, the user has an option to select the  
mode for the registrar to either “Auto”, “Gatekeeper”, “Gateway” or  
“None”.  
GK/GW Domain  
Specify the DNS or IP address of the Gatekeeper or Gateway with which  
you would like your phone to register.  
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Settings  
GK TTL  
If you selected “Gatekeeper” in the GK/GW Mode above, you can specify  
the “Time to Live” (TTL) through this setting.  
Message Center Number  
Users can set the message center number through this setting.  
Fast Start  
This setting allows you to enable/disable the “fast start” feature.  
Early Start  
Here you can switch the early start feature of the H.323 stack on or off.  
H.245 Tunneling  
Through this setting, users can turn H.245 tunneling on or off.  
H.450 Services  
With this blanket setting, you can start or stop the H.450 services.  
External line prefix  
Enter the external line prefix (e.g., 00) for outgoing calls. When you  
dial, it will be replaced by the gateway prefix you entered (e.g. *5). If,  
for example, you want to call *51234 you dial 001234 for going over  
the gateway.  
Gateway prefix  
The gateway prefix is the Alias with which the gateway is registered  
with the gatekeeper. When the gatekeeper receives a call starting with  
the gateway prefix, it knows that the call has to be routed to the  
gateway.  
Status  
System Information  
Here you find information regarding phone type, MAC Address, IP  
Address, firmware version, boot loader and firmware URLs.  
Log  
Dependent on a selectable log level the log messages are shown here.  
SIP Trace  
A quite helpful feature to display the SIP signaling.  
UPnP Trace  
You can discover the UPnP conversation between the phone and other  
devices here.  
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Settings  
Memory  
See the current memory usage of your phone.  
DNS Cache  
An option to look into the current DNS cache.  
PCAP Trace  
Create packet traces from current network traffic right on your phone!  
This is a really powerful tool to find out what is going on in the network  
around your phone.  
Settings  
Displays all settings of your phone including their current values.  
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Settings  
7. Appendix  
Standard Conformance  
Name and address of manufacturer  
snom technology AG  
Pascalstraße 10B  
10587 Berlin  
snom technology AG assures that the product  
Type: VoIP Phone  
Model: snom 220  
conforms to the following standards:  
EMC standard 89/336/EWG incl. all appendices  
Low voltage standard 73 / 23 / EWG  
Safety Standards:  
EN 60950 1992 incl. all appendices  
Electromagnetic Standards:  
EN 55022 / 9.98 Class B  
EN 55024 / 9.98  
EN 61000-3-2/1995+A1/1998+A2/1998+A14 /2000  
EN 61000-3-3/1.95  
Place, date  
Berlin, 18 August 2004  
Dr. Christian Stredicke  
CEO  
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8. Index  
DNS Cache.................................................60  
DNS Server ................................................10  
Domain.......................................................50  
DTMF.........................................................24  
DTMF Tones..............................................31  
Dynamic RTP.............................................55  
A
About..........................................................26  
Accepting a Call .........................................20  
Account............................................48  
Adding a number........................................41  
Adding an entry..........................................34  
Administrator Mode ...................................58  
Administrator Password .............................58  
Advanced Functions...................................27  
AUDIO.......................................................54  
Authentication ............................................14  
Auto Answer...............................................46  
Auto Dial....................................................52  
E
E.164 numbers............................................18  
Early Start...................................................59  
Editing an entry..........................................35  
ENTER key ..................................................7  
ENUM Suffix.............................................56  
Export.........................................................36  
B
F
G
H
Base..............................................................8  
Basic Functions ..........................................16  
Block DND.................................................54  
Blocking a Call...........................................21  
Booting.........................................................8  
Bootloader ..................................................58  
Browsing ....................................................40  
Fast Start.....................................................59  
Firmware ....................................................59  
Gateway prefix...........................................60  
GK/GW Mode............................................59  
C
H.245 Tunneling.........................................59  
H.323..........................................................59  
H.323 ID.....................................................59  
H.450 Services ...........................................59  
Handset.......................................................21  
Handsfree ...................................................21  
Headset.......................................................21  
Headset Device...........................................44  
Hold............................................................27  
HTTP..........................................................51  
HTTP port ..................................................51  
HTTP Proxy ...............................................51  
HTTPS port ................................................51  
Call Completion ...................................29, 52  
Call Diversion.............................................29  
Call Lists ....................................................38  
Call Register...............................................34  
Cleaning .......................................................6  
CLIP ...........................................................46  
CLIR...........................................................47  
CMC...........................................................53  
Codec 1-5 ...................................................49  
Conference..................................................29  
Connecting the phone...................................6  
Consultation Transfer.................................28  
Custom Melody ..........................................46  
I
D
Idle State.....................................................16  
Import.........................................................36  
Incoming Call.............................................20  
Initialization .................................................8  
Intercom .....................................................23  
IP Address....................................................9  
IP Gateway...........................................10, 50  
DEBUG ......................................................57  
Default Ringer ............................................46  
Default Selection ........................................45  
Deny All .....................................................52  
Deny List....................................................40  
Denying ......................................................21  
Destination..................................................23  
DHCP .....................................................9, 49  
Dial Plan.....................................................49  
Dialing........................................................16  
Direct Transfer ...........................................28  
Dirty Host TTL...........................................56  
Display Name.............................................48  
Diverting all calls .......................................29  
DND Mode.................................................14  
L
Language......................................................9  
LCServer ....................................................58  
LEDs ............................................................8  
Line ............................................................22  
Logging ......................................................11  
Logoff All...................................................13  
Logoff User ................................................13  
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Appendix  
Logon .........................................................12  
Logon User.................................................13  
Logon Wizard.............................................12  
Ring Tones .................................................25  
Ringtone.....................................................48  
S
M
Safety Notes .................................................6  
Setting up the Phone.....................................6  
Setting URL ...............................................57  
Settings.......................................................42  
Settings Options .........................................44  
Settings via Phone......................................42  
Settings via Web Browser..........................43  
Setup Advanced..........................................49  
Setup Line1-7.............................................48  
Setup Preferences.......................................44  
Setup Speed Dial........................................47  
Setup Update ..............................................58  
Short Messages...........................................31  
SMS............................................................31  
snom Menu.................................................12  
Software Update.........................................32  
speed dial....................................................39  
Speed Dial ..................................................39  
Status..........................................................60  
STUN Server..............................................55  
Mailbox ......................................................48  
Main Menu .................................................24  
MENU key ...................................................7  
Message Waiting Indication.......................32  
Mobility......................................................12  
Mute ...........................................................21  
MWI ...........................................................32  
MWI Dial Tone ..........................................44  
MWI Notification.......................................44  
N
NAT Detection ...........................................55  
Netmask......................................................10  
NTP Time server ........................................50  
Number busy ..............................................45  
Number redirect..........................................45  
numeric keypad ............................................7  
O
P
Offer ICE....................................................49  
Offer MPO..................................................57  
Outbound Proxy .........................................49  
Outgoing Line.............................................13  
T
Terminating a call.......................................19  
Timeout ......................................................45  
Timezone....................................................11  
Tone Scheme........................................10, 44  
TOS ............................................................55  
Transfer ......................................................28  
Transport ....................................................49  
Type of Answering.....................................46  
Packet size..................................................49  
Park orbit....................................................23  
Password.....................................................48  
PCAP Trace................................................60  
Phone name ................................................50  
Power supply................................................6  
Prefix ..........................................................54  
Preview.......................................................37  
Programmable Keys ...................................22  
Proposed Expiry .........................................49  
U
Unmute.......................................................21  
UPnP Trace ................................................60  
URL ID.......................................................59  
User ............................................................51  
V
Q
R
Voice recorder............................................23  
Volume.......................................................21  
Volume in Idle Mode .................................24  
Q-Value ......................................................49  
REDIRECTION .........................................45  
Registrar .....................................................48  
Removing a number ...................................41  
Resume.......................................................27  
W
Webinterface Language..............................44  
69  
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© 2004 snom technology AG  
snom technology Aktiengesellschaft · Pascalstr. 10b · D-10587 Berlin  
Phone: +49 30 39833-0· mailto:[email protected] · http://www.snom.com  
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