Re: PM3 CT1 CRC Errors

Ron Parker (rparker@gator1.brazosport.cc.tx.us)
Wed, 23 Jul 1997 08:29:23 -0500 (CDT)

Check your line0 cable. You may find you can generate CRC errors by just
bumping the cable. If so, replace the cable or connectors. Or, stop
bumping the cable. ;-)

--
Ron Parker
Network Communications Specialist
Brazosport College

On Tue, 22 Jul 1997, Scott Lagos wrote:

> I have a PM3 that seems to be taking a lot of CRC errors on Line0 > > Here is the line config: > > ---------------------- line0 - T1 Inband DS0 --------------- > > Status: UP Framing: ESF Encoding: B8ZS PCM: u-law > > Signaling: Trunk E&M wink start > > Receive Level: +2dB to -7.5dB > > Alarms Violations > ----------------------------- ----------------------------- > Blue 0 Bipolar 0 > Yellow 0 CRC Errors 113050 > Receive Carrier Loss 0 Multiframe Sync 0 > Loss of Sync 0 > > > The CRC seem to be going up by about 1000 every few minutes. The telco > says that the line test clean. > > This is a CT1 line provisioned as indicated above. I am not sure if the the > PCM is correct...? This is a T1 off of a fiber fed T3 back to the CO. > > Can anyone suggest what I might try to isolate/correct the errors. > >