To ensure call privacy, the phone allows only one set at a time to use a line.Canceling Call Privacy
During the call, press the line button for the call. You'll hear a short ringing tone. Others can now join the call.Restoring Call Privacy
Press the line button again during the call. You'll hear a double-ring. The other phones will be dropped from the call. NOTE: Call privacy is automatically restored when you end the call.Line-In-Use Lights
Whenever a line is in use, the light flashes slowly on the phone using that line. On the other phones, the light stays on steadily to indicate someone else is using the line.
If you are having problems with the Line-In-Use light, check that all line assignments are correct, and that all 954 phones are on the line designated as Line 1.
If you use Centrex, have an Attendant line, or there have been no changes in the system or wiring since employing the FIOS, there may be incompatibilities with the FIOS system causing the Line-In-Use light to not work properly.
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