User Guide SoundPoint IP 650
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Using the Busy Lamp Field
The busy lamp field (BLF) feature allows you to monitor the hook status and
remote party information of other users through the BLF LED indicators and
display on the SoundPoint IP 650 phone with the attached Expansion Module.
For more information, contact your system administrator.
The following figure shows the busy status of other users (for example, Jim
Brown and Rob Smith are busy on the phone):