4000 Router Series Interface Module Guide

Table 81 Description for the LEDs on the MIM-1CE3 panel

LED Descri

tion

LINK

• OFF means the link is not set up.

• ON means the link has been set up.

ACT

• OFF means no data is being transmitted or received;

• Flashing means data is being received or/and transmitted.

Interface cables and the connection methods

For more information about E3 interface cables and the connection methods, see "E3/T3 interface."

MIM-1CT3

Introduction

1-port channelized T3 interface module (MIM-1CT3) serves to:

• Transmit/Receive and handle one channel of T3 fast traffic, as well as provide the accessing of T3

traffic when working in T3 mode; and

• Provide the low-speed accessing service at the speed of n x 64 kbps or 56 kbps, where n is smaller

than or equal to 128, when working in CT3 mode.

NOTE:

T3 represents the tertiary group rate of T system in the TDM system, that is, 44.736 Mbps. A T3 channel

can be channelized into 28 T1 lines throu

h the demultiplexin

processes of T23 and T12, each T1 line

also supporting the operating modes of CT1. T23 is used to indicate either T2-to-T3 multiplex or T3-to-T2

demultiplex, and T12 to indicate T1-to-T2 multiplex or T2-to-T1 demultiplex. "T23" and "T12" discussed

here represent the demultiplex process.

Interface attributes

The interface attributes of MIM-1CT3 are shown in the following table:

Table 82 Interface attributes of MIM-1CT3

Attribute Descri

tion

Connector SMB

Number of connectors 2

Interface standard

• G.703

• G.704

• G.752

• AT&T TR 54014

• AT&T TR 62415

• ANSI T1.107

Interface rate 44.736 Mbps

Interface cable type T3 cable (75-ohm coaxial cable)

Operating mode

CT3