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Troubleshooting ISDN Using Router Lights

Table of Contents

Ascend Pipeline 50 and Pipeline 75
pwr act col wan con Description
  flash       Normal -- Passing traffic
  flash flash     Ethernet collisions
  flash     Not connected, receiving LAN traffic
      Not connected, no LAN traffic
  flash flash   Can't sync with telco switch
  flash slow   Connection refused (RNA, busy, no auth)

Netopia 655
WAN
Ready		 CH1
Link		 CH1
Traffic		 Link
Mgmt		 CH2
Traffic		 CH2
Link		 Description
    flash   flash   Normal. Passing traffic.
        No WAN traffic
        Not connected
  slow     Connection refused.
flash     Unable to sync with telco switch.

Cisco 804

        
OK NT1 LINE LAN RXD TXD LK0 LK1 LK2 LK3 CH1 RXD TXD CH2 RXD TXD PH1 PH2 Description
        flash flash     flash flash   flash flash Normal -- passing traffic
        flash flash       Connected, but no WAN traffic
              Connected but no WAN or LAN traffic
          Not Connected
  flash     Can't sync with telco switch
      No ISDN cable detected
    No ethernet cable detected
          slow slow Connection refused (RNA, busy, no auth, etc)

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