Vitec Group Communications
CCI-22 Dual Channel Party-Line Interface Instruction Manual
1-1
OPERATION
INTRODUCTION
This chapter describes how to use the CCI-22 dual party-line interface.
You can use this chapter once the Eclipse matrix system has been
correctly installed and configured with the Eclipse Configuration
System, and when the CCI-22's internal jumpers have been set. For
information on configuring the CCI-22 jumpers refer to Chapter 2,
“Installation”.
DESCRIPTION
Each CCI-22 dual party-line interface can connect two independent
external 2-wire party-line intercom systems to the Eclipse matrix. It will
support Clear-Com and many other 2-wire analog party-line formats as
well act as an independent 2/4wire party line interface for other 4wire
intercom matrices.
The CCI-22 fully supports call signals between the matrix and a
Clear-Com party-line; call signals between the matrix and other
party-line types may not be fully supported. All call signal paths are
optically isolated. All audio paths are transformer isolated, eliminating
noise induced by ground loops in the party-line systems. "Send" and
"receive" level controls are included on the front panel. The CCI-22
features sophisticated "sidetone nulling" circuitry.
The CCI-22 occupies one slot in an IMF-3 or IMF-102 interface module
frame. Connections to the matrix are via 8-pin RJ-45 connectors on
the rear panel. Connections to external party-lines are via 9-pin
connectors on the rear panel.
The CCI-22's party-line circuits do not receive power from the
matrix, but must be connected to an externally powered party-line.
More than one CCI-22 interface port may be assigned to one Eclipse
system party-line label to create a single unified party-line. However,
the nature of 2-wire to 4-wire hybrid conversions may limit the
maximum number of external 2-wire party-lines that can be combined.
Call signals to any one of the CCI-22 channels will reach destinations
in the other CCI-22 channels in addition to the destination ports within
the matrix.
When a CCI-22 interface port receives a call signal from a Clear-Com
party-line, it will be sent to all ports in the matrix which have “listens”
activated to the party-line at the time of the call signal. In addition, call
signals can be programmed to signal specific stations (see the
Configuration section of the Installation chapter).
CCI-22
Power
Send
Recv
C
L
R
Test
C
L
R
Test
Send
Recv
Null
Null
PL
PowerPL
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