AT&T System 75, Wiring Diagram

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CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
Installing 3270 Data Modules
Requirements
The 3270 data module consists of a family of protocol converters that
allow terminals to communicate with a host computer through the
switch. The three types of 3270 data modules are:
●
●
●
3270A—asynchronous
3270C—controller
3270T—terminal.
The 3270 data modules are connected directly to TN754 digital line
circuit packs. This manual contains only the information required to
connect the data modules to the switch. Installation and testing
information for the data modules is contained in the 3270 DATA
MODULE—Coaxial-to-DCP Protocol Converter—Product Guide,
999-700-520.
lnstallation
Connection to 3270A or 3270T Data Module (Figure 5-19)
1.
2.
3.
4.
Determine port assignment of 3270A or 3270T Data Module from
Data Module Form:
EXAMPLE: Port Number
B
0 2 01
Carrier Slot Circuit
Connect a 4-pair line cord (modular plug on both ends) from the
information outlet to the data module (Figure 5-19).
Install patch cord/jumper wires at cross-connect field.
Administer per AT&T System 75 and System 75 XE—Implementation
( 5 5 5 - 2 0 0 - 6 5 1 ) a n d AT&T System 75 and System 75
XE—Administration (555-200-500).
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