3Com Router 5000 and Router 6000 v2.41

Module Guide

Chapter 4 Flexible Interface Cards (Router 6000)

4.9.5 Connecting the Interface Cable

Caution:

By design, the Router 1-Port CE3 FIC is protected against lightning strikes. But when outdoor cabling is involved, you are recommended to add a special lightning arrester at the input end of the E3/T3 cable for better protection.

Step 1: Connect the SMB connector of an E3/T3 cable to the Tx port on the Router 1-Port CE3 FIC and the other end to the Rx port on another device.

Step 2: Connect the SMB connector of another E3/T3 cable to the Rx port on the Router 1-Port CE3 FIC and the other end to the Tx port on another device.

Step 3: Power on the router, and check the behavior of the LINK LED on the Router

1-Port CE3 FIC panel: OFF means fault occurs on the line and the signal is not synchronized. Check the line status.

4.10 Router 1-Port CT3 FIC

4.10.1 Introduction

Router 1-Port CT3 FIC, the 1-port channelized T3 interface card, delivers these functions:

zIn T3 mode, transmitting, receiving, and processing one channel of T3 fast traffic; providing T3 traffic access.

zIn CT3 mode, providing the subscribers with N x 64 kbps or N x 56 kbps low-speed access, where N is smaller than or equal to 128.

Note:

T3 represents the tertiary group rate of T system in the TDM system, that is, 44.736 Mbps. Through T23 and T12A demultiplexing, a T3 channel can be channelized into 28 T1 lines, each also supporting the operating mode of CT1. T23 means either T2-to-T3 multiplex or T3-to-T2 demultiplex, and T12 means T1-to-T2 multiplex or T2-to-T1 demultiplex. “T23” and “T12” discussed here represent the demultiplex process.

4.10.2 Interface Attributes

The following table describes the interface attributes of the Router 1-Port CT3 FIC.

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3Com 3C13701 3C13751 3C13755 3C13759 3C13840 3C13880 manual Router 1-Port CT3 FIC, Connecting the Interface Cable

3C13751, 3C13701, 3C13840, 3C13759, 3C13880 specifications

The 3Com 3C13880 and 3C13840 are notable components within the realm of networking technology, primarily designed for enterprise-grade solutions. These devices belong to the 3Com family, which has long been recognized for its commitment to developing robust networking products tailored to facilitate efficient data transfers and improve connectivity across various platforms.

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