Check first to make sure one end (75xx end if you're using a 75xx<->GSR
pair) is set "clock source internal".
Since the line itself looks pretty clean, my guess is that the PATH layer
isn't getting the timing right.
In one case, our POS OC3 failed miserably until we set this. I can't say
for sure if this will help you, since I didn't collect the data like you
did :-)
-Andy
On Wed, 5 Jan 2000, Jim Warner wrote:
}We're having problems with a new POS OC-3 circuit to an ISP.
}The symptoms are intermittant but occur frequently. The line
}often so bad it's not usable. One piece that seems to be
}a consistent symptom is that the display from sho controller pos
}looks like:
}
}SECTION
} LOF = 0 LOS = 0 BIP(B1) = 0
}LINE
} AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
}PATH
} AIS = 1 RDI = 1 FEBE = 30 BIP(B3) = 7774681
} LOP = 0 NEWPTR = 0 PSE = 0 NSE = 0
}
}The Section and Line errors are always zero and the all the problems
}are blamed on the PATH.
}
}I'm sure that should tell us something important, but I don't know what.
}I can find helpful CCO writeups on troubleshooting physical layer problems
}for e.g. ISDN but not for POS. Am I missing any obvious? Thanks in
}advance.
}
}-jim warner, UC Santa Cruz
}
-- Andy McConnell IP Operations Manager andym@ntt.net NTT America Network and IP Service Division +1 408 873 3757 $B??8~N}(B $B0BEHN6(B ($B%"%s%I%j%e!<(B $B%^%C%3%M%k(B) NTT$B%"%a%j%+(BIP$B%*%Z%l!<%7%g%sC4Ev2]D9(BWhen I told the people of Northern Ireland that I was an atheist, a woman in the audience stood up and said, "Yes, but is it the God of the Catholics or the God of the Protestants in whom you don't believe?" -- Quentin Crisp
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