AT&T System 75, Wiring Diagram

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CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
Connection to 3270C Data Module (Figure 5-20)
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Identify the carrier slot for the data module and place a label on
each end of a connector cable.
Connect the cable to the appropriate port carrier slot and dress it
down the side of the cabinet.
Connect an A25D (for 110-type hardware) or B25A for 66-type
hardware) cable from the bottom of the switch cabinet through the
cable slack manager, if provided, to the connector associated with
a purple row/connecting block in the trunk/auxiliary field.
For 110-type hardware, install a yellow (auxiliary) label on the
110-type terminal block. For 66-type hardware, write the lead
designations on the 66-type connecting block with a felt-tipped pen.
Connect an A25D (for 110-type hardware) or B25A (for 66-type
hardware) cable from the connector associated with a yellow
row/connecting block in the trunk/auxiliary field to location of
3270C data module (see Note).
Note: The data module is located in the auxiliary cabinet, if
one is available.
Connect an A25D (for 110-type hardware) or B25A for 66-type
hardware) cable to the DCP connector the on rear of the data
module.
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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