Tips

If the phone that shares your line has Privacy enabled, you can make and receive calls using the shared line as usual.

The Privacy feature applies to all shared lines on your phone. Consequently, if you have multiple shared lines and Privacy is enabled, coworkers cannot view or barge calls on any of your shared lines.

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...

Then...

 

See the state of a

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

speed-dial line

+

Line is in-use.

 

+ Line is idle.

BLF indicator unavailable for this line.

 

+

Line is in Do Not Disturb state.

 

 

See the state of a line

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

listed in a call log or

Line is in-use.

directory

 

 

 

Line is idle.

 

BLF indicator unavailable for this line.

 

Line is in Do Not Disturb state.

Making and Receiving Secure Calls

Depending on how your system administrator has configured your phone system, your phone might support making and receiving secure calls.

Your phone can support these types of calls:

Authenticated call—The identities of all phones participating in the call have been verified.

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Cisco Systems 7970 manual Using BLF to Determine a Line State, Making and Receiving Secure Calls