Specifications

DX-80 INSTALLATION AND MAINTENANCE MANUAL
P7290 IMM 3-41
Operation
1. Dial the extension directory number of the busy extension.
If the extension you are calling is in Tone Ringing Mode, the display will show:
EXT XXX
Cbck msg
If the extension you are calling is busy, the display will show:
EXT XXX BUSY
cbck msg next
2. Press [cbck
cbckcbck
cbck]
You hear the confirmation tone and Display will read
CBCK TO EXT XXX
Your extension will return to idle status.
To Answer a Call Back:
1. When the Call Back begins (called extension is now available), your extension will ring a special Call Back
alert ring for 30 seconds and the display will show:
CALL BACK TO XXX
reply del
2. Lift the handset or press the On/Off button.
Or…
3. Press [reply
replyreply
reply] to activate the Call Back.
To Cancel all Active Call Backs Prior to Receiving Call Back Alert Ringing:
1. Press !,,.
Operation – Analog Ports (Single Line Telephones)
When you try to access a CO Line and get a busy tone, dial # to send a Call Back to the extension.
Conditions
a) If you press [del
deldel
del] during the Call Back Alert ringing, the Call Back will be cancelled and the display will
read.
CBCK DELETE XXX
Your extension will return to an idle status.
b) To invoke a Call Back at an extension that is in the Voice Announce mode, you must first Force Tone
Ringing (
').
c) If the Call Back is not answered during the reply alert ringing, the response message will be displayed until
you press either [
reply
replyreply
reply], or [del
deldel
del].
d) The Call Back process begins when both your extension and the called party’s extension are in an idle, on-
hook mode.