NEC SL1100 Features And Specifications Manual page 646

SL1100
Operation
To place a call if your extension has ringdown programmed:
1. Lift the handset.
If you want to place a trunk call, press a line key before lifting the handset.
Depending on the setting of your ringdown timer, you may be able to dial an Intercom call before
your ringdown goes through.
If the destination has Handsfree Answerback enabled, your call voice announces. If the destination
has Forced Intercom Ringing enabled, your call rings.
R
To answer a call if you are another extension ringdown destination:
1. Speak toward telephone to answer incoming voice announcement.
- OR -
Lift the handset or press Speaker key to answer ringing Intercom call.
1-634 Ringdown Extension (Hotline), Internal/External
ISSUE 2.0