NEC XN120 Feature Manual page 39

n Operation
To place a Callback:
1. Call unavailable (busy or unanswered) extension.
2. Dial 850 or Press Callback key (PGM 15-07 or SC 851: 35).
3. Hang up.
4. Lift handset when busy extension calls you back.
If the unavailable extension was unanswered (not busy), the Callback goes through after your co-worker uses their
phone for the first time. If you have Callback Automatic Answer, you automatically place a call to the formerly busy
extension when you lift the handset. If you don't have Callback Automatic Answer, you must press the ringing line
appearance to place the call.
To cancel a Callback:
1. At system phone, press a SPK key and Dial 870.
OR
At system phone, press Camp-On key (PGM 15-07 or SC 851: 35).
OR
At single line set, lift handset and dial 870.
To test Callback at your single line phone:
1. Lift the handset.
2. Dial 899.
3. Hang up.
4. When the phone rings, lift the handset.
You hear synthesized Music on Hold.
5. Hang up.
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Features
Features Manual