Yealink T21PE2 - Page 302

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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1-Custom, you can configure DND feature for each or all accounts.
Default 0
Web UI Features->Forward&DND->DND->Mode
Parameter features.keep_dnd.enable <y0000000000xx>.cfg
Description
It configures if the DND state persists between calls after you activate DND during the call.
Note: To activate DND during the call, you need to configure a DND key in advance. It is not applicable
CP920 IP phones.
Permitted
Values
0-DND state is automatically deactivated after the call.
1-DND state persists across calls. The phone stays in the DND state until you deactivate the DND manu-
ally.
Default 1
Parameter features.dnd.emergency_enable <y0000000000xx>.cfg
Description
It enables or disables the IP phone to receive incoming calls from authorized numbers when DND feature
is enabled.
Note: The authorized numbers are configured by the parameter “features.dnd.emergency_authorized_
number”. It works only if “features.dnd.allow” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default 0
Web UI Features->Forward&DND->DND->DND Emergency
Parameter features.dnd.emergency_authorized_number <y0000000000xx>.cfg
Description
It configures the authorized numbers the IP phone can receive incoming calls from even if DND feature is
activated.
Multiple numbers are separated by commas.
Example:
features.dnd.emergency_authorized_number = 123,124
Note: It works only if “features.dnd.allow” and “features.dnd.emergency_enable” are set to 1 (Enabled).
Permitted
Values
String within 511 characters
Default Blank
Web UI Features->Forward&DND->DND->DND Authorized Numbers
Parameter features.dnd_refuse_code <y0000000000xx>.cfg
Description
It configures a return code and reason of SIP response messages when rejecting an incoming call by DND.
A specific reason is displayed on the caller’s phone screen.
Note: For Yealink IP phones, it works only if “features.dnd.allow” is set to 1 (Enabled).
Permitted
Values
404-Not Found
480-Temporarily Unavailable
486-Busy Here, the caller’s phone screen will display the reason “Busy Here” when the callee enables