AT&T System 75, Wiring Diagram

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Organization
Use of Guide
This guide provides information for planning, designing, and installing a
cost-effective wiring installation that allows moves, changes, and
additions to be made quickly and easily. To make the best use of this
guide, take the time to read it thoroughly and become familiar with its
contents and organization. For quick access to information needed to
answer most questions, refer to the table of contents and locate the
specific item in question.
To answer questions requiring more information than this guide
contains, consult the documents listed previously in this introduction
section. If you need additional help, contact the Premises Services
Consultant (PSC).
For further technical assistance, the recommended channel for AT&T
System Technicians is as follows:
1.
2.
3.
Contact your Field Assistance and Support Team (FAST).
If a satisfactory answer is not obtained from the FAST center,
contact your supervisor.
Your supervisor should contact the regional staff, if necessary.
Equipment
Most of the items specified in this guide are available through the local
AT&T Marketing Branch Office (MBO). However, some common use
hardware items may have to be obtained from other sources.
System Wiring
System wiring plays a significant role in customers’ information systems.
Technological innovations enable both voice and data transmission to
be provided through the system wiring. Also, the system wiring has
been simplified by reducing the number of cable pairs required by voice
terminals equipped with enhanced feature options.
This guide provides planning, ordering, and installation guidelines for a
system Uniform Wiring Plan (Figures 1-2 and 1-3) using 110-type or
66-type hardware.
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