Blf (Busy Lamp Field); Blf/List; Blf/Xfer - Mitel 6863i User Manual

Line Keys and Programmable Keys

BLF (Busy Lamp Field)

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.
The busy and idle indicators show on the IP phone screen display next to the key programmed for BLF functionality.
When the monitored user is idle, an icon with the handset on-hook shows next to the BLF key. When the monitored user
is on an active call, a small telephone icon is shown with the handset off-hook.

BLF/List

The BLF/List feature on the IP phones is specifically designed to support the Clearspan Busy Lamp Field feature.
This feature allows the IP phone to subscribe to a list of monitored users defined through the Clearspan web portal. Your
System Administrator configures the BLF/List Key.
Note:
Your System Administrator must have BLF/List enabled on the Clearspan Server. Contact your System Administrator for
more information.
In addition to monitoring the idle and busy state, the BLF/List feature also supports the ringing state. When the moni-
tored user is idle, there is a small telephone icon shown with the handset on-hook. When the monitored user is on an
active call, a small telephone icon is shown with the handset off-hook.
Example
A receptionist has a 6863i running Clearspan firmware that subscribes to a list of extensions from the Clearspan Applica-
tion Server. On the phone, the key LEDs illuminate either flashing, solid, or turn off depending on the state of those
extensions.
Note:
The Clearspan BLF feature is not the same as the Clearspan Shared Call Appearance (SCA) feature and does not permit
call control over the monitored extension.

BLF/Xfer

The BLF key allows one or more extensions to be monitored, and once there is any state change with those extensions, the
key shows the status of the monitored lines. The Xfer key allows a call to be transferred to other recipients blindly or con-
sultatively. The BLF/Xfer key combines the BLF and Xfer key's functionality together allowing the user to transfer calls or
use BLF with one key. You can use this key to perform the BLF function as well as use it as a transfer key to transfer calls.
Note:
It is recommended that the Switch UI Focus to Ringing Line parameter be enabled when using the BLF/Xfer feature.
For more information about this parameter, see
• BLF/Xfer and BLF: A BLF/Xfer key can be configured to subscribe to an extension and monitor the status of the exten-
sion, similar to the BLF key functionality. Changes of the state of the monitored extension are indicated by an
LED/icon.
• BLF/Xfer and Blind Transfer Calls: When the focused line is in the "Connected" state, pressing the BLF/Xfer key transfers
the call to the extension unconditionally, disregarding the status of the monitored extension.
If transferring a call to an extension fails, a message "Transfer Failed" displays on the phone, and you can reconnect
22
"Switch UI Focus to Ringing Line" on page 41.
6863i User Guide for Clearspan – 2895-001 – October 2014