Busy Lamp Field; Blf Key Configuration; Blf List Configuration - Yealink SIP-T2 Series Administrator's Manual

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones

Busy Lamp Field

The Busy Lamp Field (BLF) feature enables the IP phone to monitor specific remote lines for state changes on the
phone. It is not available on the T19(P) E2/CP920 IP phone.
Yealink IP phones support two methods of BLF configuration:
Configure a line key as BLF key to monitor a specific remote line
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Configure BLF List to monitor a list of specific remote lines
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The BLF feature enables the following functions to the users:
Monitor the status of line on their phone
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Display caller ID information
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Answer incoming calls to the monitored line (called directed call pickup)
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Park and retrieve calls to the monitored line
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Initiate an outgoing intercom call to the monitored line
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Barging In an Active Call by BLF List Key
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Park the active call to the monitored users who are in the BLF list
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Topics

BLF Key Configuration

BLF List Configuration

State Indicator of Remote Line
BLF/BLF List Subscription
Visual and Audio Alert for Monitor Lines
LED Mode for BLF/BLF List Key
BLF/BLF List Key LED Status and Behavior Configuration
BLF Key for Intercom Configuration
Call Information Display Configuration
BLF Key Configuration
You can configure a BLF key for a specific line.
The following shows the configuration of a BLF key for Bill.
linekey.X.type=16
linekey.X.line=1
linekey.X.value=1001
linekey.X.label=Bill
Related Topic
Line Keys Configuration
BLF List Configuration
You can configure a BLF List for monitor phone. It enables the monitor phone to subscribe to a list of lines, and receive
status notifications of the monitored lines.
Note
The IP phone subscribes to a BLF list that is set up on the server. You must access the server and set up a list of monitored
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