Yealink SIP-T28P - Manual (Page 100)

User Guide for the SIP-T28P IP Phone
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Incoming calls on this line will be rejected automatically and "n New Missed
Call(s)" ("n" indicates the number of the missed calls) will prompt on the LCD
screen.
To activate DND in custom mode for all accounts:
1. Press the DND soft key when the phone is idle.
The LCD screen displays a list of the accounts 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 idle screen and all line icons change to .
Incoming calls will be rejected automatically and "n New Missed Call(s)" ("n"
indicates the number of the missed calls) will prompt on the LCD screen.
Note The prompt message displays only if Missed Call Log for the line is enabled. Missed Call
Log is configurable via web user interface at the path Account->Basic.
Do Not Disturb is local to the phone, and may be overridden by the server settings. For
more information, contact your system administrator.