Busy Lamp Field - Yealink SIP-T4X Administration Manual

Administrator's Guide for SIP-T4X IP Phones
2. In the desired DSS key field, select LDAP from the pull-down list of Type.
3. Click Confirm to accept the change.
To configure an LDAP key via phone user interface:
1. Press Menu->Call Features->DSS Keys.
2. Select the desired DSS key.
3. Press
4. Press
5. (Optional.) Enter the string that will appear on the LCD screen in the Label field.
6. 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). Then when the 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 can press the BLF key to dial out the
phone number. When the monitored user receives an incoming call, the supervisor can
press the BLF key to pick up the call directly. When the monitored user is on a call, the
supervisor can press the BLF key to interrupt and set up a conference call.
Visual Alert and Audio Alert for BLF Pickup
Visual alert 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
and 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 enables the
supervisors 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
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or , or the Switch soft key to select Key Event from the Type field.
or , or the Switch soft key to select LDAP from the Key Event field.