Using Busy Lamp Field to Determine a Line State

Depending on the configuration, you can use the Busy Lamp Field (BLF) feature to determine the state of a phone line associated with a speed-dial button, call log, or directory listing on your Cisco IP Communicator. You can place a call to this line regardless of the BLF status. This feature does not prevent dialing.

If you want to...

Then...

See the state of a speed-dial line

Look for one of these indicators next to the line number:



+ Line is in-use.



+ Line is idle.



BLF indicator unavailable or not configured for this line.

 



+ Line is in Do Not Disturb state.

See the state of a line listed in a call log or directory

Look for one of these indicators next to the line number:



Line is in-use.



Line is idle.



BLF indicator unavailable for this line.



Line is in Do Not Disturb state.



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