NEC Univerge SV9100 - To Activate the Door Box Strike; To Answer a Door Box Call While Busy on Another Call; To Answer a Door Box Chime; To Call a Door Box

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Operation
To call a Door Box: Multiline
Terminal
1. Press Speaker.
2. Dial 802.
3. Dial Door Box Number (1~8).
Single Line Telephone
1. Lift the handset.
2. Dial 802.
3. Dial Door Box Number (1~8).
To activate the Door Box strike:
Multiline Terminal
1. While talking to the Door Box, press Recall.
Single Line 500/2500 Telephone
1. While talking to the Door Box, hookflash.
To answer a Door Box chime:
1. Lift the handset or press Speaker.
To Answer a Door Box call while busy on another call:
Multiline Terminal
If you are busy on a call, the display shows the incoming Door Box call and the large LED flashes.
1. Press Hold to place your active call on hold.
2. When you hear dial tone, dial the door box access code (802 by default) plus the door box
number (1~8) to answer the Door Box call.
 To retrieve the original call, hang up with the door box and press Conf .