Port Packs/Dcp Repeaters: System 85 And Definity Generic; With Traditional Modules; Port Circuit Packs; Table 4-1. Port Circuit Pack Cabling - Avaya 6424D+M User Manual

4. PORT PACKS/DCP REPEATERS: SYSTEM 85 AND
DEFINITY GENERIC 2 WITH TRADITIONAL MODULES
This chapter presents supplementary information on port circuit packs, loop distances for terminals, and
digital communications protocol (DCP) repeaters that you may find useful in designing a wiring
installation for System 85 and DEFINITY Generic 2 Communications Systems (hereafter abbreviated to
DEFINITY Generic 2 or Generic 2) with traditional modules.

PORT CIRCUIT PACKS

Table 4-1, Port Circuit Pack Cabling, identifies the Circuit packs that are housed in the port carrier and
the fields on the main distribution frame (MDF) where cables from those circuit packs terminate. There
are 16 circuit packs per carrier with one 25-pair cable serving every two packs, except for the digital
signaling level- 1 (DS1) carrier which has one 25-pair cable for each slot. The table also gives the
number of ports for each circuit pack. There are four ports for each digital pack and eight ports for each
analog pack.
If you receive just circuit pack information (types and quantities) from the Marketing Branch
Organization (MBO) but no information on the cabling accompanying those packs, use table 4-1, Port
Circuit Pack Cabling, to calculate the number of cables that can be expected to accompany the switch
for these packs and determine the fields for their terminations.
Table 4-2, Terminals and Peripherals Served by Port Circuit Packs, lists the voice terminals that each
circuit pack can serve, and table 4-3, Voice Terminal Loop Ranges, lists the loop ranges for voice
terminals.
The design of the MDF must allow for the termination of all eight carrier cables whether or not the
carrier is slated for a full complement of circuit packs. The design should not allow for vacant carrier
positions unless such an allowance is specifically requested.
4-1