NEC SL1100 Feature Manual page 191

ISSUE 3.5
Programming
1. Optionally assign an extension's Voice Mail key as a Message key.
Program Program Name
Number
15-07-01 Programming Function Keys
Operation
Operation is automatic.
InMail Feature Manual
For one-button access to the Subscriber Mailbox, set up a Voice
Mail key (code 77 + Mailbox Number).
By default, no Voice Mail keys are assigned.
Using the Message Count Display
SL1100
Description
M
2-173