NEC univerge sv8100 User Manual page 267

Operation
Log On to Subscriber Mailbox.
L
InMail System Guide
(5) Listen to the message for which you want to make a return call.
[Lstn]
Dial this code while listening to the message you want to return.
MC
(62)
[Not applicable]
Make Call automatically places a return call to the co-worker that left you the
message.
If your system has Caller ID, Make Call can automatically place a return call
to your outside caller.
If you hear "Your call cannot go through," your system's Caller ID is not
properly set up. You go right back to the listen mode for the message you
were listening to when you tried the Make Call.
Using Make Call from your Mailbox
Issue 7.00
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