4000 Router Series Interface Module Guide

Attribute Descri

tion

Supported service T3 leased line

Interface LEDs

MIM-1CT3 panel is shown in the following figure:

Figure 56 MIM-1CT3 panel

The following table describes the LEDs on the MIM-1CT3 panel:

Table 83 Description for the LEDs on the MIM-1CT3 panel

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 T3 interface cables and the connection methods, see "E3/T3 interface."

xDSL interface module

• MIM-1SHL-4W

MIM-1SHL-4W

Introduction

The 1-port dual-pair G.SHDSL interface module (MIM-1SHL-4W) adopts trellis coded pulse amplitude

modulation (TCPAM) coding and provides symmetric rates up to 4.624 Mbps. The transmission rate of

the interface can automatically adapt to line distances and conditions.

Compared with ADSL, G.SHDSL allows farther transmission distance and thus has a wider application

scope. It is an alternative to E1/T1 line for high-speed data service access. However, as TCPAM uses the

band starting from 0 Hz for data transmission, G.SHDSL cannot share the same line with POTS or ISDN

like what ADSL has done.

The MIM-1SHL-4W delivers these features:

• Supporting manual G.SHDSL line activation/deactivation and easy-to-use fault location tools.

• Supporting G.991.2 interface standard and auto-sensing.