Zhone IMACS 8000 User Manual page 419

FXO Card
4. At your end, go to the FXO Card Main Screen and send a digital milliwatt test tone (0
dBm) toward the CPE. If you still don't receive a signal, check the cabling from the FXO
card to your CPE, and check the CPE itself. If those items are okay, replace the FXO card
at your end.
5. If the FXO card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.
Voice Cards
FXO Card Troubleshooting
13-17