Yealink SIP-T21 E2

Configuring Basic Features
223
Parameter
Permitted Values
Default
places a call, receives a call, is during a call, or is idle (if large DND icon is enabled).
0-No Label
1-2 chars
If it is set to 0 (No Label), you can press the line key to display the line key label when the
label length is shorten.
If it is set to 1 (2 chars), the exceeding characters will be ignored.
Note: It is only applicable to SIP-T52S IP phones.
Web User Interface:
Dsskey->Line Key->Linekey length in short
Phone User Interface:
None
To configure the linekey length in short via web user interface:
1. Click on Dsskey->Line Key.
2. Select the desired value from the pull-down list of Linekey Length in short.
3. Click Confirm to accept the change.
Account Registration
Registering an account makes it easier for the IP phones to receive an incoming call or dial an
outgoing call. Yealink IP phones support registering multiple accounts on a phone; each
account requires an extension or phone number.
The number of the registered accounts must meet the following:
Phone Model
Accounts
SIP-T54S/T48G/T48S/T46G/T46S/T29G
<=16
SIP-T52S/T42G/T42S
<=12