Using Blf To Determine A Line State - Cisco 7921G User Manual

Using BLF to Determine a Line State

Depending on 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 phone. You can
place a call to this line, regardless of the BLF status. This feature does not prevent dialing.
If you want to...
See the state of a
speed-dial line
See the state of a line
listed in a call log or
directory
52
Then...
Look for one of these indicators next to the line number:
Line is in-use.
Line is idle.
BLF indicator unavailable for this line.
Look for one of these indicators next to the line number:
Line is in-use.
Line is idle.
BLF indicator unavailable for this line.
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