Yealink SIP-T48S User Manual page 150

User Guide for the SIP-T48S IP Phone
The default value is "10".
Tap the Save soft key to accept the change or
5.
Auto redial is configurable via web user interface at the path Features->General Information.
To use auto redial:
When the called party is busy, the following prompt will appear on the touch screen of the
phone:
Tap the OK soft key to activate auto redial.
1.
140
to cancel.