Yealink SIP-T4X Administrator's Manual page 158

Administrator's Guide for SIP-T4X IP Phones
Line Key/Expansion Module Key LED (configured as a BLF key and BLF LED Mode is set
to 1)
LED Status
Fast flashing red (200ms)
Solid red
Slow flashing red (1s)
Off
Line Key/Expansion Module Key LED (configured as a BLF key and BLF LED Mode is set
to 2)
LED Status
Fast flashing red (200ms)
Solid red
Slow flashing red (1s)
Off
Line Key/Expansion Module Key LED (configured as a BLF key and BLF LED Mode is set
to 3)
LED Status
Fast flashing red (200ms)
Solid red
Slow flashing red (1s)
Off
Procedure
BLF can be configured using the configuration files or locally.
Configuration File
142
The monitored user receives an incoming call.
The monitored user is dialing.
The monitored user is talking.
The call is parked against the monitored user's phone
number.
The monitored user's conversation is placed on hold.
The monitored user is idle.
The monitored user does not exist.
The monitored user receives an incoming call.
The monitored user is dialing.
The monitored user is talking.
The call is parked against the monitored user's phone
number.
The monitored user's conversation is placed on hold.
The monitored user is idle.
The monitored user does not exist.
The monitored user receives an incoming call.
The monitored user is dialing.
The monitored user is talking.
The monitored user's conversation is placed on hold.
The call is parked against the monitored user's phone
number.
The monitored user is idle.
The monitored user does not exist.
<MAC>.cfg
Description
Description
Description
Specify whether to use visual
alert and audio alert for BLF