Инструкция для AASTRA 53i ip phone

26 Model 53i IP Phone User Guide

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