Yealink SIP-T48G Administrator's Manual page 199

Parameters
features.dnd.off_code
Description:
Configures the DND off code to deactivate the server-side DND feature when the
DND mode is configured as Phone. The IP phone will send the DND off code to the
server when you deactivate DND feature on the IP phone.
Example:
features.dnd.off_code = *72
Web User Interface:
Features->Forward& DND->DND->DND Off Code
Phone User Interface:
Menu->Features->DND->Off Code
features.dnd_refuse_code
Description:
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 LCD
screen.
404-No Found
480-Temporarily Unavailable
486-Busy Here
If it is set to 486 (Busy Here), the caller's LCD screen will display the reason "Busy
Here" when the callee enables DND.
Web User Interface:
Features->General Information->Return Code When DND
Phone User Interface:
None
DND Key
For more information on how to configure the DSS Key, refer to
DSS Key on page 549.
Parameter
linekey.X.type/
programablekey.X.type
Configuring Basic Features
Permitted Values
String within 32 characters
404, 480 or 486
Appendix D: Configuring
Permitted Values
Refer to the following
5
Default
Blank
480
Default
content
185