User's Manual

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5.17 BLF
Busy Lamp Field (BLF) is used to monitor a specific user for status changes on IP
phones. For example, you can configure a BLF key on a supervisor’s phone to monitor
the phone user status (busy or idle). When the monitored user places a call, a busy
indicator on the supervisor’s phone indicates that the user’s phone is in use.
To setup BLF: web-> phone-> Extkey. Set the Type as BLF ,and configure the value and
account.