User manual

Chapter 4
Troubleshooting
This chapter provides frequently asked questions as identified from
Digium Technical Support and possible resolutions. Multiple resources
are available to obtain more information about Asterisk and Digium
products. These resources are listed on page 59.
What do the Status LED colors indicate?
 Steady Green - Card is in-sync with the far end.
 Steady Yellow - Card is synchronizing or is receiving a red alarm from
the far end. Use a software tool such as dahdi_tool to get a textual
description of the state of the card.
 Steady Red - Card is not seeing far end, circuit is not up, or cable is
bad.
 Singular Blinking Green - Line has been placed into loopback mode,
either from a remote lookup command or usage of the maintenance
utility dahdi_maint.
 Sweeping Green - TE800 Series DAHDI driver is not loaded.
I can't receive DID calls even though I have it enabled in
extensions.conf.
Your telco might be sending calls with a method you are not expecting.
Digium, Inc. Page 54