Yealink T42S

Advanced Features
457
BLF LED Mode Configuration
Supported BLF LED Modes
The following table lists the LED statuses of the BLF/BLF list key when BLF LED Mode is set to 0, 1, 2, 3 or 4
respectively. The default value of BLF LED mode is 0.
Line key/Expansion Module Key LED (configured as a BLF key or a BLF List key and BLF LED Mode is set
to 0)
LED Status
Description
Solid green
The monitored user is idle.
Fast-flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
The monitored user’s conversation is placed on hold (This
LED status requires server support).
Slow-flashing red (1s)
The call is parked against the monitored user’s phone
number.
Off
The monitored user does not exist.
Line Key/Expansion Module Key LED (configured as a BLF key or a BLF List key and BLF LED Mode is set
to 1)
LED Status
Description
Fast-flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
The monitored user’s conversation is placed on hold (This
LED status requires server support).
Slow-flashing red (1s)
The call is parked against the monitored user’s phone
number.
Off
The monitored user is idle.
The monitored user does not exist.
Line Key/Expansion Module Key LED (configured as a BLF key or a BLF List key and BLF LED Mode is set
to 2)
LED Status
Description
Fast-flashing red (200ms)
The monitored user receives an incoming call.