NEC SL2100 Features And Specifications Manual page 490

SL2100
2. Dial the extension number.
You display shows your telephone extension number, port number and extension/Department Group.
You can also check any other extension numbers information by pressing Help key + the extension
number.
3. Press Exit key to return the normal time/date display.
To change how Intercom calls ring the extension:
1. Press Speaker key or lift the handset.
2. Dial 723 to have calls ring your extension.
- OR -
I
3. Dial 721 to have calls voice announce to your extension.
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ISSUE 1.0
Intercom