My config works in the lab with a neax2000 PBX but when on site it will not come up. I have replaced all cables and test and replaced the hardware on the PBX. I am currentenly doing a RMA on the routers card. When I do a no shut I get the following error:Mar 3 18:01:41.313 EST: %CONTROLLER-5-UPDOWN: Controller T1 1/0, changed state to up Mar 3 18:02:09.284 EST: %CONTROLLER-5-UPDOWN: Controller T1 1/0, changed state to down (LOS detected)
Any help in case it is not the card.
T1 1/0 is down.
Applique type is Channelized T1
Cablelength is short 133
Description: Uplink to Neax 2000
Transmitter is sending remote alarm.
Receiver has loss of signal.
alarm-trigger is not set
Version info Firmware: 20020812, FPGA: 11
Framing is ESF, Line Code is B8ZS, Clock Source is Internal.
Data in current interval (780 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 780 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
The simple test to see what devic is at fault is to test each controller with a hardware loopback plug. When the loopback is plugged into the controller, the T1 interface should come up. If it fails to come up, then you may have bad hardware, but this is rather unlikely. A method to make your own loopback plug is to connect pin 1 to 4 and pin 2 to 5 on a RJ45 connector.
Below is a that offers a method for using a hardware loopback to test a controller.
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