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T1 Support

Basic T1 troubleshooting steps

Please ensure you have performed the following steps before calling the Impulse support center.

  1. Locate your router.  This will probably be a device made by Cisco or Adtran with fewer than six network connections.  It should be connected to the T1 line directly as well as to your firewall or ethernet switch.
  2. Verify that the router is powered.  Look for a power light on the unit.
  3. Determine if the T1 Circuit is up.
    • For Cisco routers, there will be a rectangular metal module with a faceplate about the size of a pack of chewing gum.  There are three lights visible behind holes labeled CD, AL, LP.  If the T1 is operating correctly there should only be a green light for CD and the other two should be dark.  An amber light for AL means that the T1 is in Alarm.  An amber light for LP means that the circuit is being tested and unavailable for use.
    • For Adtran routers, there will be one or more front panel lights labeled NET.  A green light indicates that the T1 is up and working.  A red light means the T1 is in alarm.  A dark indicator represents a T1 that is not provisioned.
  4. Once you have gathered this information please call the Impulse support center Toll Free at 877.692.2345 or 805.456.5800.
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      • Desktop Fax
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        • Legacy UC-One Support
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