NEC Univerge SV8100 Features And Specifications Manual page 1670

Issue 12.0
To cancel a Trunk Queuing/Camp-On request:
1. At the multiline terminal, press idle Speaker.
- OR -
At the single line telephone, lift the handset.
2. Dial 770.
3. At the multiline terminal, press Speaker to hang up.
- OR -
At the single line telephone, hang up.
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UNIVERGE SV8100
Trunk Queuing/Camp-On