BLF Support


BLF is short for Busy Lamp Field. It is a light on the IP phone that indicates real-time status of other extensions or trunks that are connected to your PBX.

Use Case

Busy Lamp Field feature is useful for receptionists, who can configures BLFs on his/her phone for monitoring the status of other workers’ phone use (busy or idle). So the receptionist can quickly identify who is available and who is currently on a call by glancing at their phone display.

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