NEC Univerge SV8100 General Description Manual page 70

Issue 5.02
Five Do Not Disturb options are available at each extension. These options can be
accessed via multiline terminal Softkeys, DND feature key or DND system access
code.
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Door Box
The Door Box is a self-contained Intercom unit typically used to monitor an entrance
door. A visitor at the door can press the Door Box call button (like a door bell). The
Door Box then sends chime tones to all extensions programmed to receive chimes.
To answer the chime, the called extension user lifts the handset. This lets the
extension user talk to the visitor at the Door Box. The Door Box is convenient to have
at a delivery entrance, for example. It is not necessary to have company personnel
monitor the delivery entrance; they answer the Door Box chimes instead. Any number
of system extensions can receive Door Box chime tones.
Each Door Box has a pair of normally open relay contacts that can connect to an
electric door strike. Use these contacts to remotely control the entrance door. After
answering the Door Box chimes, a multiline terminal user can press Recall to activate
the Door Box contacts. This in turn releases the electric strike on the entrance door.
The device connected to the Door Box contacts cannot exceed the contact ratings
shown in the following table:
The system can have up to eight Door Boxes. Six chime tones are available.
Drop Key
The Drop Key abandons a call while retaining the PBX/Centrex line to originate
another call. The Drop Key is provided by programming a Function Key. This feature
allows Recall to be used to provide a hookflash to the PBX or Central Office. A single
line telephone user can use the Drop Key function with an access code.
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1 = Incoming trunk calls blocked
2 = Paging, incoming Intercom, Call Forwards and transferred trunk calls
blocked
3 = All calls blocked
4 = Incoming Call Forwards blocked
0 = Do Not Disturb canceled
Door Box Specifications
Contact Configuration
Maximum Load
Maximum Initial Contact Resistance
UNIVERGE SV8100
Normally Open
60mA @ 30 VDC
10mA @ 90 VDC
50m Ohms
Features