Yealink SIP-T23P [451/841] Procedure

Configuring Advanced Features

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5. (Optional.) Enter the string that will appear on the LCD screen in the Label field.

6. Enter the phone number or extension you want to monitor in the Value field.

7. (Optional.) Enter the directed call pickup code in the Extension field.

8. Press the Save soft key to accept the change.

Busy Lamp Field (BLF) List allows a list of specific extensions to be monitored for status

changes. It enables the monitoring phone to subscribe to a list of users, and receive

notifications of the status of monitored users. Different indicators on the monitoring

phone show the status of monitored users. The monitoring user can also be notified

about calls being parked/no longer parked against any monitored user. IP phones

support BLF list using a SUBSCRIBE/NOTIFY mechanism as specified in RFC 3265. This

feature depends on support from a SIP server.

Note

Procedure

BLF List can be configured using the configuration files or locally.

Configuration File

y0000000000xx.cfg

Configure BLF List.

Parameters:

account.X.blf.blf_list_uri

account.X.blf_list_code

account.X.blf_list_barge_in_code

account.X.blf_list_retrieve_call_parked_

code

Specify whether to automatically

configure the BLF list keys.

Parameter:

phone_setting.auto_blf_list_enable

Configure the order of BLF list keys

assigned automatically.

Parameter:

phone_setting.blf_list_sequence_type

Assign a BLF List key.

Parameters:

linekey.X.type/

expansion_module.X.key.Y.type

BLF list is not applicable to SIP-T19(P) E2 IP phones.