4000 Router Series Interface Module Guide

LED Descri

tion

Note:

AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication

Interface cables and the connection methods

For more information about E1 interface cables, see "E1 interface."

MIM-8E1/MIM-8E1-F

Introduction

• MIM-8E1 module

MIM-8E1, the 8-port channelized E1/PRI interface module, transmits, receives, and processes

eight channels of E1 data traffic. In addition, you can use the module for other purposes, such as

CE1 access and the ISDN PRI function.

• MIM-8E1-F module

MIM-8E1-F, the 8-port fractional E1 interface module is different from the MIM-8E1 module in the

sense that:

{ The FE1 operating mode supported by the MIM-8E1-F module allows only one n x 64 kbps

bundle to be formed on each interface, where n = 1 to 31. However, an MIM-8E1 module

allows arbitrary grouping of 31 channels and therefore multiple bundles.

{ The MIM-8E1-F module does not support PRI mode.

NOTE:

Given a MIM-8E1 module, the system automatically creates a serial interface for each timeslot bundle

formed on a controller E1 interface.

Interface attributes

The interface attributes of the MIM-8E1 and the MIM-8E1-F are shown in the following table:

Table 74 Interface attributes of the MIM-8E1 and the MIM-8E1-F

Attribute Descri

tion

Connector D68

Number of connectors 1

Interface standard G.703

Interface rate 2.048 Mbps

Cable type 75-ohm 8E1 conversion cable

Cable characteristic

impedance

75-ohm

Operating mode

E1, CE1, ISDN PRI (only supported by MIM-8E1)

FE1 (only supported by MIM-8E1-F)

Supported service

• Backup

• Terminal access service

• ISDN PRI (only supported by MIM-8E1)