AT&T 555-230-894 manual Installation Connection to Data Mounting

Processor Data Modules (PDMs) are connected to TN754B digital line circuit packs and are mounted individually or in a 71A data mounting. Other digital-line circuit packs may be required in some countries. Each 71A data mounting can contain up to eight modules. This document contains only the information required to connect the modules to the switch. Module installation and testing information is contained in AT&T System 75 User’s Guide— Processor Data Module, 999-700-028.

The data mounting is connected by an A25D/B25A cable through the cross- connect field to a TN754B digital line circuit pack. The modules can also be mounted and connected individually through the cross-connect field.

Installation

Connection to Data Mounting

1.From the Data Module Form, determine port assignment of the processor data modules (PDMs):

EXAMPLE: Port Number	2	B	02	01
	Cabinet	Carrier	Slot	Circuit

2.Connect an A25D or B25A cable to the DIGITAL COMMUNICATIONS PROTOCOL-LINEconnector on the rear of the data mounting.

3.Route the cable from the data mounting to the station side of the cross- connect field.

4.Write the lead designations on the connecting block with a felt-tipped pen.

5.Connect patch cords/jumper wires at cross-connect field (Figure 5-1).

6.Administer according to the instructions in the following United States. English book:

■DEFINITY Communications System Generic 3 Implementation, 555-230-655

9-56Issue 1 September 1995