BPV bipolar violations

[dirkfuzzbucket]

Getting these errors on one end of a link:
% TOTAL 24HR BPV - 000000000 000000004 000000005 000000065
% TOTAL 24HR CRC - 000000003 000000000 000000000 000000000
% TOTAL 24HR FAP - 000000000 000000000 000000000 000000000
% TOTAL 24HR SLPREP - 000000000
% TOTAL 24HR SLPDEL - 000000000
% TOTAL 24 HOUR G2 AIS -000000000
% TOTAL 24 HOUR G2 LFAS -000000000
% TOTAL 24 HOUR G2 LMAS -000000000
% TOTAL 24 HOUR G2 RAI -000000000
% TOTAL 24 HOUR G2 LOS -000000000
% TOTAL 24 HOUR G2 RAIE -000000000
% DROL001 DAILY ROUTINE END
% DTIM LD60 END 01:03 20/1/2005


What causes a BPV error?????

 

[PERRYPJ]

TELCO

OLD ROLMEN WORKING ON NORTELS

 

[phnechic]

In my experience BPV (bipolar violations) are usually caused by an AMI circuit being optioned as B8ZS.

 

[PERRYPJ]

Bipolar Violation (BPV) - The occurrence of two successive pulses of the same polarity in a bipolar signal. In T I, this is detected as an error

OLD ROLMEN WORKING ON NORTELS

 

[johnpoole]

i've seen more bpv errors, when they are not part of other errors crc etc, happen between the smart jack or csu and the card... common cabling, more then one t in a tie or patch cable, patch cables that are hand made, or spliced.. csu's that are 3 floors away... not all, but most of the repeative bpv errors fell into that block... bpv, with no other errors.. usually when you have a repeater or loaded cable from the co that is optioned wronge somewhere in the ckt, you'll see other errors... if a t is optioned esf on both ends and ami at center points, it will stay up, you'll see bpv's and usually slips, and/or crc errors... every case of trouble is different as is experience.. these are things i look far first, after 30 plus years i still get fooled every now and then...hope this helps

john poole
bellsouth business
columbia,sc