Busy Lamp Field (Blf) (480I/480I Ct/9133I Only) - Aastra 480i Administrator's Manual

Busy Lamp Field (BLF)
(480i/480i CT/9133i only)
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.
BLF Setting
(For use with Asterisk)
On the 480i and 480i CT, 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 on-hook shows next to the
BLF softkey. When the monitored
user is on an active call, a small
telephone icon is shown with the
handset off-hook.
On the 9133i, the LED lights next to
each BLF programmable key
illuminate steady to indicate the
monitored line is off-hook or
unregistered. The LED goes off
when the line is idle.
56 IP Phone SIP Admin Guide
BLF\List Setting
(For use with the BroadSoft
Broadworks Rel 13 or higher
platform only)
The BLF\List feature on the IP
phones is specifically designed to
support the BroadSoft Broadworks
Rel 13 Busy Lamp Field feature.
This feature allows the IP phone to
subscribe to a list of monitored
users defined through the
BroadWorks web portal.
In addition to monitoring the idle
and busy state, the BLF\List feature
also supports the ringing state.
When the monitored user is idle,
there is a small telephone icon
shown with the handset on-hook.
When the monitored user is in
ringing state, there is a small bell
icon shown. When the monitored
user is on an active call then a
small telephone icon is shown with
the handset off-hook.
On the 9133i phone, the LED lights
next to each BLF programmable
key illuminate steady to indicate
the monitored line is off-hook or
unregistered. The LED goes off
when the is idle. When the
monitored extension is ringing, the
LED flashes.
The Broadworks BLF feature is not
the same as the Broadworks
Shared Call Appearance (SCA)
feature and does not permit call
control over the monitored
extension.
Example
A receptionist has a 480i running
Broadsoft firmware that subscribes
to a list of extensions from the
BroadWorks Application Server.
Each monitored extension in the
list shows up individually on the
480i screen next to a softkey
button. The softkey icons on the
screen change depending on the
state of the extensions.