Softkeys
Softkeys as Busy Lamp Field (BLF)
You can set a softkey to Busy Lamp Field (BLF).
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 57i, the busy and idle indicators show on the IP phone screen display next to the softkey programmed for BLF functionality. When the monitored user is idle, an icon with the handset
Note: You can also use the BLF configured softkey to dial out. Contact your system administrator for more information.
Setting a BLF Softkey
Aastra Web UI
1. Click on Operation->Softkeys and XML.
2.Click on the Bottom Keys tab or the Top Keys tab.
3.Select from "Key 1" through "Key 20" on the bottom tab. or
Select from "Key 1" through "Key 10" on the top tab.
36Model 57i IP Phone User Guide