4000 Router Series Interface Module Guide

NOTE:

E3 represents the tertiary group rate of E system in the TDM system, that is, 34.368 Mbps. An E3 channel

can be channelized into 16 E1 lines throu

h the demultiplexin

processes of E23 and E12, each E1 line

supporting both the operating modes of E1 and CE1. E23 is used to indicate either E2-to-E3 multiplex or

E3-to-E2 demultiplex, and E12 to indicate E1-to-E2 multiplex or E2-to-E1 demultiplex. "E23" and "E12"

discussed here represent the demultiplex process.

Interface specifications

Table 119 HMIM-1CE3 interface specifications

Item Description

Connector type SMB

Number of connectors 2

Interface standard G.703, G.704, and G.751

Interface rate 34.368 Mbps

Cable type E3 cable (75-ohm coaxial cable)

Operating mode

CE3

Supported services E3 leased line

Interface LEDs

Figure 87 HMIM-1CE3 panel

Table 120 HMIM-1CE3 LED description

LED Descri

tion

LINK/ACT

• ON means carrier signal has been received.

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

• OFF means no carrier signal has been received.

LP/AL

• ON means the interface is in a loopback.

• OFF means no loopback or alarm is present.

• Flashing means an alarm indication signal (AIS), loss of frame alignment (LFA)

signal, or remote alarm indication (RAI) signal is present.

Interface cables and the connection methods

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

HMIM-1CT3

Introduction

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