Yealink SIP-T29G User Manual page 117

The LCD screen displays a list of accounts registered on the phone.
2. Press the All On soft key to activate DND for all accounts.
3. Press the Save soft key to accept the change.
The icon appears on the status bar, and all line icons change to
Incoming calls will be rejected automatically, and the LCD screen will prompt "n
New Missed Call(s)" ("n" indicates the number of missed calls).
To configure the DND authorized numbers via web user interface:
1. Click on Features->Forward & DND.
2. Select Enabled from the pull-down list of DND Emergency.
Basic Call Features
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