4000 Router Series Interface Module Guide

Table 77 Description for the LEDs on MIM-2T1 and MIM-4T1-F panels

LED Descri

tion

LINK/ACT

• ON means the carrier signal has been received.

• OFF means no carrier signal has been received.

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

LP/AL

• ON means the interface is in a loopback.

• Flashing means an AIS, LFA, or RAI alarm signal is present.

• OFF means no loopback or alarm is present.

Note:

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

Interface cables and the connection methods

For more information about T1 interface cables and the connection methods, see "T1 interface."

MIM-8T1/MIM-8T1-F

Introduction

• MIM-8T1

MIM-8T1, the 8-port channelized T1/PRI interface module, transmits, receives, and processes

eight channels of T1 data traffic. In addition, you can use the module for other purposes, such as

CT1 access and the ISDN PRI function.

• MIM-8T1-F

MIM-8T1-F, the 8-port fractional T1 interface module is different from the 8T1 module in the sense

that:

{ The FT1 operating mode supported by the MIM-8T1-F module 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, the MIM-8T1

module allows arbitrary grouping of 24 channels and therefore multiple bundles.

{ The MIM-8T1-F module does not support PRI mode.

NOTE:

Given a MIM-8T1 module, the system automatically creates a serial interface for each timeslot bundle

formed on a controller T1 interface.

Interface attributes

The interface attributes of the MIM-8T1 and the MIM-8T1-F are shown in the following table:

Table 78 Interface attributes of the MIM-8T1 and the MIM-8T1-F

Attribute Descri

tion

Connector RJ-45

Number of connectors 1