Installation guide

Operational Features
41-001561-00 REV00 – 10.2014 5-122
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.
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 and sipXecs servers)
On the 6865i IP 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 line is idle.
On the 6867i and 6869i, the busy and idle states are indicated by the color of the softkey button on screen (i.e. red for busy,
green for idle)
as well as the LED indicators (i.e. solid for busy and off for idle).
You can configure a BLF key on the IP Phones using the configuration files or the Mitel Web UI.
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 6865i IP hone, 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.
You can configure a BLF/List key on the IP Phones using the configuration files or the Mitel Web UI. You can also specify a
BLF list URI that the phone uses to access the required BLF list. You can specify a BLF List URI using the “list uri” parameter
in the configuration files or the BLF List URI field in the Mitel Web UI at the path Operation->Softkeys/Programmable
Keys/Expansion Module Keys->Services->BLF List URI. For more information about the “list uri” parameter, see Appendix A,
the section, “BLF List URI Settings” on page A-205.
Example
A receptionist has an IP phone that subscribes to a list of extensions from the BroadWorks Application Server.
Notes:
• Applicable to the 6865i, 6867i, and 6869i IP phones only.
• BLF feature availability is dependant on your call manager.
Note:
You can configure a maximum of 50 BLFs on the M685i Expansion Module. You can configure a maximum of 48 BLFs on
the M680i Expansion Modules.
Note:
The BroadWorks BLF feature is not the same as the BroadWorks Shared Call Appearance (SCA) feature and does not per-
mit call control over the monitored extension.