Yealink SIP-T20 - Manual (Page 71)

Basic Call Features
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You can use call completion to notify the caller who failed to reach a desired callee
when the callee becomes available to receive a call.
To configure call completion via phone user interface:
1. Press .
2. Select Features->Call Completion.
3. Press or to select Enable from the Call Completion field.
4. Press to accept the change.
Call completion is configurable via web user interface at the path Features->General
Information.
To use call completion:
When the called party is busy, the following prompt will appear on the LCD screen of the
phone:
1. Press . The phone returns to the idle screen and call completion is activated.
When the called party becomes idle, the following prompt appears on the LCD
screen of the phone:
2. Press to redial the number.
Note Call completion is not available on all servers. For more information, contact your system
administrator.
1. Call Completion:
◄ Enable ►
Call Completion
Wait for 112 ?
Call Completion
Dial 112 ?