Issue 1
www.class-connection.com
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VC-24
TALKBACK INTERCOM SYSTEM
EXPANDABLE 24/48/72/96 ZONE
CONTENTS
INTRODUCTION
1, 2
SPECIFICATIONS
2, 3
INSTALLATION
3, 4
Precautionary Information
3, 4
VC-24 Control/Connector Locations
5
Punchdown Block Connections
6
Attendant Port Connection
7
Background Music Connection
7
Door Speaker/Call Switch Connection
7
Inhibit Option
8
External Tone Source (ex.V-9927A)
8
SMDR Printer Port Cable
8
Override Page Port
9
Global All Call Page
9
Global Priority Page
9
Zone Page Option
10
Clock Sync
10
Dipswitch Options
11
Programming Tool
11-26
OPERATION
27,28
VC-24 with VC-24EXP Expansion Unit
Remote Station Access (Call Button)
28
Attendant Station Dialing Plan
28
TROUBLESHOOTING CHART
29
LIMITED WARRANTY
29
GLOSSARY OF TERMS
30
The VC-24 Talkback Intercom System provides 24 stations with one-way, two-way, group call and all call pages.
Each station can be programmed for one-way or two-way communication. The stations may be grouped into one-
way page groups. The system also provides the ability for a remote speaker location equipped with a call button to
call the attendant location. The attendant receives calling speaker identification when using a Caller ID equipped
telephone or a Caller ID display.
The VC-24 is compatible with standard 45 ohm speakers and one-way amplified speakers and can be accessed via a
single line phone, E-Key line port or PABX loop start trunk port. An RS-232 port on the control unit provides a
connection for a serial printer for printout of system activity.
The VC-24 provides a background music input and is designed to automatically mute music during a page. The
basic system also provides four (4) contact closures associated with the last 4 zones to allow for door strike plate
activation. Multiple VC-24 control units can be interconnected to allow global all call and global priority pages for
up to six (6) VC-24 control units.
