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Icon
SCA State
Description
Available Operations
LED Pattern
Call Parked
A call is parked against the
extension.
Pick up the parked call.
Fast blinking
green
Idle
None of the phones with the
shared line is using the
SCA.
Seize the SCA to make an
outgoing call.
Off
Error
Protocol error.
None.
Slow blinking
green
Busy Lamp Field (BLF)
Busy Lamp Field (BLF) is a feature that lets you monitor calls. When the BLF service is available, you can
assign the BLF function to a feature key. The phone treats a BLF feature key-press as a speed dial to call
the monitored extension.
The following table lists typical BLF events, the operations that happen when the event occurs, and the
LED pattern for that event. Two or more events can happen at the same time, but the LED pattern shows
only one event at a time.
List of All BLF States
Icon
BLF
Event
Description
Available Operation
LED Pattern
Ringing
The monitored
extension is ringing.
Answer the call.
Fast blinking
green
Busy
The monitored
extension is on a call
or making a call.
Barge in to do one of the following:
•
Fully participate in the call or conference.
•
Listen to the conversation without talking.
•
Listen to the conversation but talk only to
the monitored extension (a.k.a. coaching
or whispering).
Steady green
Holding
The monitored
extension is holding
one or more calls.
Resume and take over the call.
Slow blinking
green
Call
Parked
A call is parked
against the monitored
extension.
Pick up the call from the parking slot.
Periodic short
blinking green
Idle
The monitored
extension is idle.
Make or transfer a call to the extension.
Steady green
Off
Shared Lines
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