Yealink SIP-T54S Administrator's Manual page 448

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Dsskey->Line Key->Short
Phone User Interface:
Menu->Features->DSS Keys->Line Key X->Short Label
To configure a DND key via web user interface:
Click on Dsskey->Line Key (or Programable Key).
1.
In the desired DSS key field, select DND from the pull-down list of Type.
2.
(Optional.) Enter the string that will appear on the LCD screen in the Label field.
3.
Click Confirm to accept the change.
4.
To configure DND feature via web user interface:
Click on Features->Forward&DND.
1.
In the DND block, mark the desired radio box in the Mode field.
2.
If you mark the Phone radio box:
a)
Mark the desired radio box in the DND Status field.
1)
(Optional.) Enter the DND on code in the On Code field.
2)
422
Parameters Permitted Values Default