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202T
User manual
AT&T 202T User Manual
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Contents
Table of Contents
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Table of Contents
Table of Contents
Introduction
How to Use this Manual
Description
Functional Description
Features of the 202T Modem
Physical Desc:I;Iption
47B1 Data Mounting
Figure 1. 202T Modem Front View
40B1 Data Mounting
202T Modem Lights
Figure 2. 202T Modem Rear View
202T Modem Switches
Installation Preparation
Power
Tools Required
Environmental Requirements
Cabling
Cabinets
Figure 3. Data Cabinet
The 202T Modem Options
Figure 4. Location of Option Switches
Table a 202T Modem Options
TABLE B. Recommended Options for 2-Wire Private Line and 4-Wire Private Line with Talk-Back Using the 202T Series Modem
Installation Procedures
Installing 202T Modem Options
4-Wire Modem Terminated by a 42A Connecting Block
4-Wire Modem Terminated by a 549A Jack
Figure 5. 4-Wire Modem Terminated by a 42A Connecting Block
4-Wire Modem on 4-Wire Private Line with the 829 Network Interface Data Only
Figure 6. 4-Wire Modem Terminated by a 549A Jack
4-Wire Modem Connected to Locally Engineered Private Line Termination Without the 829 Network Interfaces
Termination
Figure 8. 4-Wire Modem Connected to Locally Engineered Private Line Termination
Multiple Modem Installation
Figure 9. 2-Wire Modem Connected to Locally Engineered Private Line Termination
Figure 10. Block Diagram of 30-Inch Data Cabinet Equipped with Eight Modems
Testing Procedures
Local Self-Test
Analog Loopback Test
Remote Test (4-Wire Operation)
Remote Test (2-Wire Operation)
Service Information
Defective Units
Appendix
TABLE D. DTE Interface
TABLE E. Private Line Interface
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