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Model 6731i IP Phone User Guide 61
Line Keys and Programmable Keys
Busy Lamp Field (BLF) Key
The BLF feature on the IP phones allows a specific extension to be monitored for state changes.
BLF monitors the status (busy or idle) of extensions on the IP phone.
Example
A Supervisor configures BLFs on his phone for monitoring the status of a worker’s phone use
(busy or idle). When the worker picks up his phone to make a call, a busy indicator on the
Supervisor’s phone shows that the worker’s phone is in use and busy.
On the 6731i, the busy and idle indicators are the LEDs next to each BLF key. The LED
illuminates steady to indicate the monitored line is off-hook or unregistered. The LED goes off
when the line is idle.
You can set BLF on the programmable keys using the Aastra Web UI only. BLF is not
configurable from the IP phone UI.
Configuring a BLF Key
1. Click on Operation->Programmable Keys.
Note: The BLF setting is applicable to the Asterisk server only.
Note: You can also use a BLF configured key to dial out. Contact your System
Administrator for more information
Aastra Web UI
Note: Keys 5 and 6 (SAVE and DELETE keys) can be made configurable ONLY
by your System Administrator.