Yealink SIP-T42G - Manual (Page 85)

Basic Call Features
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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 OK soft key, 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 the OK soft key to redial the number.
Note
You can press a call return key to place a call back to the last incoming call.
To configure a call return key via phone user interface:
1. Press Menu->Features->DSS Keys.
2. Select a desired DSS key.
3. Press or , or the Switch soft key to select Key Event from the Type field.
4. Press or , or the Switch soft key to select Call Return from the Key Type field.
5. (Optional.) Enter a string that will appear on the LCD screen in the Label field.
6. Press the Save soft key to accept the change or the Back soft key to cancel.
Call return key is configurable via web user interface at the path DSSKey->Line Key.
Call completion is not available on all servers. For more information, contact your system
administrator.
Call completion is configurable via web user interface only.