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Model 53i IP Phone User Guide
Programmable Keys
Setting a "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.
Note: The BLF setting is applicable to the Asterisk server only.
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 53i, the busy and idle indicators are the LEDs next to each BLF
programmable 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.
Note: You can also use a BLF configured key to dial out. Contact your system admin-
istrator for more information.
1. Click on Operation->Programmable Keys.
2. Select a "Key 1" through "Key 6".
3. In the "Hard Key" field, select BLF to apply to the programmable key.
4. In the "Value" field, enter the phone number or extension you want to
monitor.
5. In the "Line" field, select a line for which to apply this programmed key.
Valid values are 1 through 9.
6. Click to save your changes.
7. Click on Operation->Reset.
8. In the "Restart Phone" field click to restart the IP phone.
Aastra Web UI