Specifications

7-76
Reference Guide
Model No.
Running Head
WAN Card Error Messages WAN Card
7.6 WAN Card Error Messages
Refer to Appendix B in the System Reference Guide for further information on Error
Messages regarding this card.
7.7 WAN Card Troubleshooting
The WAN card (or a T1 or E1 port on it) may be faulty if a CGA-Red alarm is in progress on
either port of the card. This alarm occurs if the incoming network signal is lost, or if the WAN
port is out of frame with that signal. To isolate the trouble, proceed as follows:
1. See if similar alarms are also present on any other T1/E1 lines and WAN cards in the
system. If so, the trouble may be with the Interface card, which connects the T1 and E1
signals from the WAN cards to the external network. If the trouble is only on one T1 or
E1 line connected to the WAN card, continue with step 2.
2. Perform a local T1 or E1 signal loopback toward the CPE, and see if the CGA alarm
clears after about 10 to 30 seconds. If it does, the WAN card is good; go to step 3.
Otherwise, go to step 4.
3. Check the local network equipment receiver, cabling to the Interface card at the local
system, and the far-end system or network transmitter.
4. Replace the WAN card with an identical WAN card. Be sure to install the same types
of plug-in modules on the new WAN card before plugging it in.
5. If the WAN card is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.