Allied Telesis AT-AR041 설치 및 안전 매뉴얼 - 페이지 9

{카테고리_이름} Allied Telesis AT-AR041에 대한 설치 및 안전 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Allied Telesis AT-AR041 12 페이지. Network service module
Allied Telesis AT-AR041에 대해서도 마찬가지입니다: 설치 및 안전 매뉴얼 (13 페이지)

페이지 인쇄

Installation and Safety Guide

LEDs and What They Mean

AT -AR040 LEDs

The AT-AR040 NSM unit does not have independent LEDs. See

related to NSMs" on page 10

unit switch or router.

AT -AR041 and AT -AR042 LEDs

LED

Active

Data

for information about related LEDs found on the base-

State

Function

Green

Lit when the BRI has successfully completed the

exchange of INFO 1 and INFO 2 signals, and INFO

3 and INFO 4 signals are present on the link. This

means the ISDN interface is correctly connected

to a working NT device.

Off

There is no connection to the ISDN, or the ISDN

has deactivated the connection.

Amber

For on-demand ISDN, lit when there is a call up

over the respective B channel.

For permanent circuits, lit when HDLC packets are

being exchanged between the switch or router and

another TE end system device (normally another

switch or router) over the respective B (data)

channel.

Flashing Amber

For on-demand ISDN, flashing when data is being

exchanged.

Off

For on-demand ISDN, Off when there is no active

connection or when continuous data exchange is

occurring.

For permanent ISDN circuits, Off when no data

exchange is occurring.

"Base Unit LEDs

613-000610 Rev A