Cisco ASR 903 Installation Guide

T1/E1 Cable Connectors
Figure 87: T1/E1 Cable Connector
One end of the cable (see the figure above) has a 68-pin connector that plugs into the T1/E1 interface module
and the other end of the cable with a 68-pin connector is connected to a RJ48, AMP64 or a DIN patch panel.
Use the thumbscrews on either side of the connector to secure the cable to the interface.
For information about the pinout of the cable connecting the T1/E1 interface to the rear of the patch panel,
see Troubleshooting.
Patch Panel Cabling for Redundancy
You can connect the patch panels with the interface modules for redundancy, using the Y-cables. The Y-cable
stub lengths are reduced, so that the cable does not exceed from the rack spacer. The Y-cables are numbered
based on the different stub length. Cable lengths differ for even numbered and odd numbered slots in the
chassis.
Table 20: Y-Cable for Redundancy
DescriptionCable MarkingBundle PID
16-port cable for TDM CEM Interface Module,
42 inches cable length and 10 inches stub length,
even slot
T1/E1-Cable S-3CABLE-16TDM-R1EL1
16-port cable for TDM CEM Interface Module,
42 inches cable length and 7.5 inches stub length,
even slot
T1/E1 Cable S-2
16-port cable for TDM CEM Interface Module,
42 inches cable length and 6.5 inches stub length,
even slot
T1/E1 Cable S-1
16-port cable for TDM CEM Interface Module,
62 inches cable length and 10 inches stub length,
even slot
T3/E3-Cable M-3CABLE-16TDM-R1EL2
16-port cable for TDM CEM Interface Module,
62 inches cable length and 7.5 inches stub length,
even slot
T3/E3-Cable M-2
16-port cable for TDM CEM Interface Module,
62 inches cable length and 6.5 inches stub length,
even slot
T3/E3-Cable M-1
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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Installing the Cisco ASR 903 Router
T1/E1 Cable Connectors

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English