Specifications

WAN Ports 5-15
WAN ports WAN port Error Messages
5.4 WAN port Error Messages
Refer to Appendix B in this Guide for further information on Error Messages regarding this
port.
5.5 WAN port Troubleshooting
The WAN port (or a T1 port on it) may be faulty if a CGA-Red alarm is in progress on either
port of the port. 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 lines and WAN ports in the
system. If so, the trouble may be with the Interface port, which connects the T1 signals
from the WAN ports to the external network. If the trouble is only on one T1 line
connected to the WAN port, continue with step 2.
2. Perform a local T1 signal loopback toward the CPE, and see if the CGA alarm clears
after about 10 to 30 seconds. If it does, the WAN port is good; go to step 3. Otherwise,
go to step 4.
3. Check the local network equipment receiver, cabling to the Interface port at the local
system, and the far-end system or network transmitter.
4. Replace the WAN port with an identical WAN port. Be sure to install the same types of
plug-in modules on the new WAN port before plugging it in.
5. If the WAN port is determined to be faulty, replace it and return the faulty unit for repair
to the location specified by your distributor.