Yealink SIP-T48S User Manual page 193

Select Enabled from the pull-down list of Audio Alert for BLF Pickup.
3.
Click Confirm to accept the change.
4.
Note
Visual and audio alert features are configurable via web user interface only.
When the monitored line receives an incoming call, the following occurs on your phone:
The phone plays a specific ring tone (if enabled).

The BLF key icon flashes red.

The caller ID appears on the touch screen (if enabled).

In the following figure, the touch screen shows an incoming call from 1008 on the monitored
line.
You can do the following actions:
- Tap the DPickup soft key to pick up the call.
- Tap the Send soft key to dial out the monitored phone number.
Advanced Phone Features
183