Yealink SIP-T2 SERIES Administrator's Manual page 493

Parameters
X ranges from 1 to 2 (for SIP-T21(P) E2)
For programable keys:
X ranges from 1 to 4.
For ext keys:
X ranges from 1 to 6, Y ranges from 1 to 20, 22 to 40 (Ext key 21 cannot be configured).
Note: It is not applicable to SIP-T19(P) E2 IP phones.
Web User Interface:
DSSKey->Line Key->Label
Phone User Interface:
Menu->Features->DSS Keys->Line Key X->Label
To configure an intercom key via web user interface:
Click on DSSKey->Line Key (or Programable Key).
1.
In the desired DSS key field, select Intercom from the pull-down list of Type.
2.
Enter the remote extension number in the Value field.
3.
(Optional.) Enter the string that will appear on the LCD screen in the Label field.
4.
Select the desired line from the pull-down list of Line.
5.
Click Confirm to accept the change.
6.
To configure an intercom key via phone user interface:
Press Menu->Features->DSS Keys.
1.
Select the desired DSS key.
2.
Press or , or the Switch soft key to select Intercom from the Type field.
3.
Select the desired line from the Account ID field.
4.
(Optional.) Enter the string that will appear on the LCD screen in the Label field.
5.
Enter the remote extension number in the Value field.
6.
Press the Save soft key to accept the change.
7.
Permitted Values
Configuring Basic Features
Default
469