Yealink SIP-T54S Administrator's Manual page 440

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Menu->Features->DND->Off Code
account.X.dnd.enable
Description:
Triggers DND feature to on or off for account X.
0-Off
1-On
If it is set to 1 (On), the IP phone will reject incoming calls on account X.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Note: It works only if the value of the parameter "features.dnd.allow" is set to 1 (Enabled)
(except CP860 IP phones) and value of the parameter "features.dnd_mode" is set to 1
(Custom). It is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones.
Web User Interface:
Features->Forward&DND->DND->DND Status
Phone User Interface:
Menu->Features->DND->AccountX->DND Status
account.X.dnd.on_code
Description:
Configures the DND on code to activate the server-side DND feature for account X.
The IP phone will send the DND on code to the server when you activate DND feature for
account X on the IP phone.
X ranges from 1 to 16 (for SIP-T54S/T48G/T48S/T46G/T46S/T29G)
X ranges from 1 to 12 (for SIP-T52S/T42G/T42S)
X ranges from 1 to 6 (for SIP-T41P/T41S/T27P/T27G)
X ranges from 1 to 3 (for SIP-T40P/T40G/T23P/T23G)
X ranges from 1 to 2 (for SIP-T21(P) E2)
Example:
account.1.dnd.on_code = *73
Note: It works only if the value of the parameter "features.dnd.allow" is set to 1 (Enabled)
and value of the parameter "features.dnd_mode" is set to 1 (Custom). It is not applicable to
SIP-T19(P) E2/CP860/CP920 IP phones.
Web User Interface:
414
0 or 1
String within 32
characters
0
Blank