4000 Router Series Interface Module Guide

LED Descri

tion

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.

Fiber ports, optical fibers, and the connection methods

For more information about fiber ports, optical fibers, and the connection methods, see "Fiber port."

E1/T1 interface module

• HMIM-2E1

• HMIM-4E1

• HMIM-4E1-F

• HMIM-8E1

• HMIM-2T1

• HMIM-4T1-F

HMIM-2E1/HMIM-4E1/HMIM-4E1-F

Introduction

The 2-port channelized E1/PRI interface module (HMIM-2E1), and 4-port channelized E1/PRI interface

module (HMIM-4E1) transmit, receive, and process E1 data traffic. In addition, you can use these

modules for other purposes, such as CE1 access and the ISDN PRI function.

The HMIM-4E1-F module is different from the HMIM-4E1 module in the sense that:

• The FE1 operating mode supported by the E1-F module allows only one n x 64 Kbps bundle to be

formed on each interface, where the value range of n is 1 to 31. However, an E1 module allows

arbitrary grouping of 31 channels and multiple bundles.

• The E1-F modules do not support PRI mode.

Interface specifications

Table 114 HMIM-2E1/HMIM-4E1 and HMIM-4E1-F interface specifications

Item HMIM-2E1/HMIM-2E1-F HMIM-4E1/HMIM-4E1-F

Connector type DB15 DB25

Number of

connectors

2 1

Interface standard

G.703 and G.704

Interface rate 2.048 Mbps