User Manual

Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
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3. Press or , or the Switch soft key to select Key Event from the Type field.
4. Press or , or the Switch soft key to select LDAP from the Key Type field.
5. Press the Save soft key to accept the change.
Busy Lamp Field (BLF) is used to monitor a specific user for status changes on IP phones.
For example, you can configure a BLF key on a supervisor’s phone to monitor the phone
user status (busy or idle). When the monitored user places a call, a busy indicator on the
supervisor’s phone indicates that the user’s phone is in use.
When the monitored user is idle, the supervisor presses the BLF key to dial out the phone
number. When the monitored user receives an incoming call, the supervisor presses the
BLF key to pick up the call directly. When the monitored user is in a call, the supervisor
presses the BLF key to interrupt and set up a conference call.
Note
Visual Alert and Audio Alert for BLF Pickup
Visual and audio alert for BLF pickup allow the supervisor’s phone to play an alert tone
and display a visual prompt (e.g., “6001<-6002”, 6001 is the monitored extension which
receives an incoming call from 6002) when the monitored user receives an incoming call.
In addition to the BLF key, visual alert for BLF pickup feature enables the supervisor to
pick up the monitored user’s incoming call by pressing the Pickup soft key. The directed
call pickup code must be configured in advance. For more information on how to
configure the directed call pickup code for the Pickup soft key, refer to Directed Call
Pickup on page 107.
Note
BLF LED Mode
BLF LED Mode provides four kinds of definition for the BLF key LED status. The following
table lists the LED statuses of the BLF key when BLF LED Mode is set to 0, 1, 2 or 3
respectively. The default value of BLF LED mode is 0.
Line key LED (configured as a BLF key and BLF LED Mode is set to 0)
LED Status
Description
Solid green
The monitored user is idle.
Fast flashing green (200ms)
The monitored user receives an incoming call.
Slow flashing green (500ms)
The monitored user is dialing.
The monitored user is talking.
Visual alert for BLF pickup feature is not applicable to SIP-T20P IP phones.
BLF feature is not applicable to SIP-T19P IP phones.