NEC UNIVERGE SV8100 Features & Specifications Manual page 212

Issue 5.0
To cancel a Callback:
1. At the multiline terminal, press Speaker and Dial 870.
- OR -
At the multiline terminal, press Camp-On key (Program 15-07 or SC 851: 35).
- OR -
At the single line telephone, lift the handset and dial 870.
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UNIVERGE SV8100
Callback