Yealink SIP-T48G User Manual page 157

Tap the On radio box of the Call Completion field.
2.
Tap the Save soft key to accept the change or
3.
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 touch screen of the
phone:
Tap OK, the phone will then returns to the idle screen and call completion will be activated.
1.
Basic Call Features
to cancel.
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