NEC Univerge SV8100 Features And Specifications Manual page 252

Issue 7.0
Operation
To return call from the UM8000 Mail:
1. While listening to a message with CID information press More, More then Call softkeys.
- OR -
Dial , 0.
#
2. To exit from the call, hang up.
To return call from the VM8000 InMail:
1. While listening to a message with CID information press More, More then Call softkeys.
- OR -
Dial 6, 2 (MC).
2. To exit from the call, hang up.
 If you hear "Your call cannot go through," your system Caller ID is not properly set up. You will be returned to the
listen mode for the message you were listening to when you tried the Make Call.
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UNIVERGE SV8100
Caller ID Call Return