Yealink SIP-T54S Administrator's Manual page 438

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
Details of Configuration Parameters:
features.dnd.allow
Description:
Enables or disables the DND feature.
0-Disabled
1-Enabled
If it is set to 0 (Disabled), DND cannot be activated and users are not allowed to configure
DND on the phone.
Note: It is not applicable to CP860 IP phones.
Web User Interface:
None
Phone User Interface:
None
features.dnd_mode
Description:
Configures the DND mode for the IP phone.
0-Phone
1-Custom
If it is set to 0 (Phone), DND feature is effective for the IP phone.
If it is set to 1 (Custom), you can configure DND feature for each or all accounts.
Note: It is not applicable to SIP-T19(P) E2/CP860/CP920 IP phones. It works only if the value
of the parameter "features.dnd.allow" is set to 1 (Enabled).
Web User Interface:
Features->Forward&DND->DND->Mode
Phone User Interface:
None
features.dnd.enable
Description:
Triggers DND feature to on or off.
0-Off
1-On
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Parameters Permitted Values
0 or 1
0 or 1
0 or 1
Default
1
0
0