Can Bipolar violations be caused by IRX-211 ???

Rick Wagner (rick@foothill.net)
Thu, 14 Aug 1997 17:53:43 -0700

I have a T-1 FrameRelay circuit from my main office to PacBell Internet
using Frame Relay.

I have a Laurus LA-103 NI on my wall that belongs to Telco from there I
have my
cable to an Adtran TSU-LT from there to my IRX-211

The Atran TSU-LT is receiving in the ball park of 15 seconds of "code
violations and bpvs" every HOUR. The couter on show S1 is showing about
the following every HOUR

Status: ESTABLISHED
Input: 252757035 Abort Errors: 7/4
Output: 98489683 CRC Errors: 168
Pending: 0 Overrun Errors: 0
TX Errors: 0 Frame Errors: 157

Uptime 1 hour... I have replaced every cable and tightened down every wire
possible. Yet I keep getting errors.

The telco says they can loop to the NI and it runs clean.
They say they can loop to my csu and run clean.
They have done several 20 minute intrusive tests and they are telling me
that it is my router or the cable from my csu to the router that is bad. I
have swapped the cable with a know good cable.

Is it possible, reasonable that the router is causing these errors.???

Any advice ???

Thanks
Rick