User Guide

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Basic call processing
Sending a warning tone to an extension in line lockout
When a handset is left off a telephone for an extended period of time, the telephone
goes into a state called “line lockout.” .
Note 1: You cannot cancel the warning tone. It stops after a certain period of time,
or when the telephone’s handset is put back on the hook.
Note 2: You cannot break in to an extension that is already receiving the warning tone.
1
Press an idle lpk
key.
The lpk indicator
goes on.
2
Press BKI. The BKI indicator
goes on.
3
Dial the extension
you wish to check.
A fast busy signal
(overflow tone) is
heard at the console.
4
To break in to the
extension, press
BKI.
The BKI indicator
goes off.
5
Press , then
RLS .
The warning tone is
sent to the extension.