Motorola MTR2000 T5544 Instruction / Field Service Manual page 211

1
DESCRIPTION
The Model CLN1205 Wireline Interface Board (WIB) is described in this section. A general description, identifi-
cation of jumpers, and inputs/outputs, functional block diagrams, and functional theory of operation are provid-
ed. The information provided is sufficient to give service personnel a functional understanding of the module,
allowing maintenance and troubleshooting to the module level. (Refer also to the Maintenance and Troubleshoot-
ing section of this manual for detailed troubleshooting procedures for all modules in the station.)
General Description
Overview of Circuitry
Motorola Inc., 2005
All Rights Reserved
Printed in U.S.A.
The Wireline Interface Board (WIB) serves as the interface between the
customer telephone lines and the station equipment. Each WIB contains
circuitry to interface with a 600 Ω impedance telephone line configuration
with various signal types.
The WIB is installed behind the front panel, above the Station Control
Module within the option-card bracket, and is connected to a 96-pin Euro
connector located on the backplane of the station. The phone line1 and
line2 connections are routed from a wire-trap terminal block mounted on
the rear of the backplane to the WIB connector. Phone line3 and line4 con-
nections are routed from the system connector.
The WIB contains the following circuitry:
• Audio and Data Circuits – the WIB provides a number of voice and
data circuits which interface with the customer phone lines
Government & Enterprise Mobility Solutions
1301 E. Algonquin Road, Schaumburg, IL 60196
8 WIRE, WIRELINE
INTERFACE BOARD
MODEL CLN1205
68P81096E31-B
09/20/05-UP