Specifications

Installation and Operation Manual Chapter 1 Overview
DXC-100PSX Physical Description 1-9
Table 1-3. Narrowband Primary Module Connector Configuration and Pinouts
Pin Locations Link
Transmit Receive
Reserved
Tip Ring Tip Ring
1
26 1 27 2 28 3
2 29 4 30 5 31 6
3 32 7 33 8 34 9
4 35 10 36 11 37 12
5 38 13 39 14 40 15
6 41 16 42 17 43 18
7 44 19 45 20 46 21
8 47 22 48 23 49 24
Connector pins 25 and 50 are used to provide cable present status for inter-
system cables between a given DXC-100PSX Narrowband Primary Module and its
associated DXC-100 D8E1T1 interface module (i.e., not required for direct T1/E1
network interfaces).
Narrowband Redundant Module, D8E1T1/R
The Narrowband Redundant Module is designed to interface with the DXC-100
resident standby D8E1T1 interface module via a Telco-to-Telco type
interconnection cable (provided). This module is used to facilitate DXC-100
commanded interface switching from the protected module to the standby
module (via latching relays). The Narrowband Redundant Module must be
installed in DXC-100PSX slot 1. The standby D8E1T1 module set must also be
installed in the matching slot (slot 1) in the DXC-100 chassis.
Thumbscrews are provided at the top and bottom of the faceplate to secure the
module in the chassis and to make an electrical connection to frame ground for
regulatory emission compliance. See
8 Figure 1-5 for an illustration of a
Narrowband Redundant Module.