AT&T 75 - Page 398

110-TYPE HARDWARE
Installing 3270 Data Modules
Requirements
The 3270 data module consists of a family of protocol converters that allow 3270-type
terminals to communicate with a host computer through the system. The three types of 3270
data modules are the following
3270A (Asynchronous)
3270C (Controller)
3270T (Terminal)
3270 data modules are connected directly to TN754 Digital Line circuit packs. This manual
contains only information for connection to the data modules from the system switch.
Installation and testing information for the 3270 data modules is contained in the 3270
DATA MODULE—Coaxial-to-DCP Protocol Converter–Product Guide, 999-700-520.
Installation
Connection to 3270A or 3270T Data Module (Figure 3-132)
1.
Determine port assignment of 3270A or 3270T Data Module from Data Module
Form:
EXAMPLE: Port Number B 02
01
Carrier
Slot Circuit
2.
3.
4.
Install patch cord or jumper wires at cross-connect field.
Run and connect 4-pair line cord (modular plug on both ends) from information
outlet to data module (see Figure 3-132).
Administer per AT&T System 75 and System 75 XE Implementation and AT&T
System 75 and System 75 XE Administration.
Connection to 3270C Data Module (Figure 3-133)
1.
2.
3.
4.
5.
6.
7.
Identify carrier slot and label both ends of switch cable.
Connect cable to appropriate port carrier slot and dress cable down sides of
cabinet.
Run and connect A25D cable from bottom of the switch cabinet through cable slack
manager, if provided, to connector associated with a purple row in the
Trunk/Auxiliary Field.
Run and connect A25D cable from connector associated with a yellow row in the
Trunk/Auxiliary Field to location of 3270C data module (see Note).
Note: The data module is located in the auxiliary cabinet, if provided.
Install patch cord or jumper wires at cross-connect field.
Connect A25D cable to DCP connector on rear of data module.
Administer per AT&T System 75 and System 75 XE Implementation and AT&T
System 75 and System 75 XE Administration.
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