Chapter 4 Troubleshooting Procedures

Table 4-1. Remote Annex 6300 Front Panel LEDs

LED(s)

Description

 

 

Modem

The Remote Annex 6300 has two status LEDs for each

Status

modem port (up to 32):

 

CD - Data Carrier Detect is a green LED and is on when

 

the carrier has been detected on the telephone line on the

 

corresponding modem.

 

TX/RX - TX/RX is a green LED that flashes to indicate

 

that the corresponding modem is transmitting or receiving

 

data.

Modem

These LEDs indicate the number of modems installed. An

Config

LED is green if all the modems in its group are good. An

Status

LED is amber if one modem in its group is bad.

PRI Channel

These green LEDS indicate B channel allocation. There are

Status

32 PRI Channel Status LEDs on the front of the Remote

 

Annex 6300. For T1, 23 are used to indicate B channel

 

allocation. For E1, 30 are used for B channel allocation.

Network/

RED - RED alarm LED is ON during a locally detected

Status

carrier failure. During the RED alarm condition, a

Alarms

YELLOW alarm is transmitted across the telephone

 

network.

 

YEL - YELLOW alarm LED is ON when receiving a

 

YELLOW alarm condition from the telephone network.

 

BLU - BLUE alarm LED is ON when receiving an unframed,

 

all-ones Alarm Indication Signal (AIS) from the network. This

 

condition exists upon a loss of originating signal, or when any

 

action is taken that would cause a signal disruption.

 

 

(continued on next page)

4-2 Remote Annex 6300 Hardware Installation Guide

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Nortel Networks 6300 manual Troubleshooting Procedures