3Com Router 5000 and Router 6000 v2.41

Module Guide

Chapter 4 Flexible Interface Cards (Router 6000)

Step 5: Power on the router, and check the behavior of the LINK LED on the card

panel: OFF means fault occurs on the line and the signal is not synchronized. Check the line status.

4.8Router 4-Port CT1/PRI FIC and Router 4-Port Fractional T1 FIC

4.8.1Introduction

I.Router 4-Port CT1/PRI FIC

Router 4-Port CT1/PRI FIC, the 4-port channelized T1/PRI interface card, transmits, receives, and processes T1 data traffic. In addition, you can use the card for other purposes, such as CE1 access and the ISDN PRI function.

II. Router 4-Port Fractional T1 FIC

Router 4-Port Fractional T1 FIC, the 4-port fractional T1 interface card, differs from the Router 4-Port CT1/PRI FIC primarily in the sense that:

z

z

The FT1 operating mode supported by the T1-F cards allows only one n x 64 kbps or n x 56 kbps bundle to be formed on each interface, where n = 1 to 24. However, a T1 card allows arbitrary grouping of 24 channels and multiple bundles.

The T1 cards do not support PRI mode.

4.8.2 Interface Attributes

The following table describes the interface attributes of the cards.

Table 4-17Interface attributes of the cards

Attribute

Description

 

 

Connector

RJ-45

 

 

 

1

Number of connectors

2

 

4

 

 

Interface standard

G.703/T1 102, G.704

 

 

Interface rate

1.544 Mbps

 

 

Cable type

T1 cable (100-ohm straight-through shielded cable)

 

 

Operating mode

CT1, ISDN PRI (only supported by the cards)

FT1 (only supported by the cards)

 

 

 

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3Com 3C13759, 3C13701, 3C13880, 3C13840, 3C13751 manual Router 4-Port CT1/PRI FIC, II. Router 4-Port Fractional T1 FIC

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

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