Yealink SIP-T48S User Manual page 158

User Guide for the SIP-T48S IP Phone
You can enable/disable DND for the phone system, or you can customize DND for each or all
accounts. Two DND modes:
Phone (default): DND is effective for the phone system.

Custom: DND can be configured for each or all accounts.

You can receive incoming calls from authorized numbers when DND is enabled.
To configure the DND mode via web user interface:
Click on Features->Forward&DND.
1.
In the DND block, mark the desired radio box in the Mode field.
2.
Click Confirm to accept the change.
3.
Note DND mode is configurable via web user interface only.
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