Re: (PM) Terminate causes

Michael Bryan (pmu@ursine.com)
Wed, 07 Apr 1999 18:03:34 -0700

Doug McClure wrote:
>The numbers so far seem to have a slant in lost carrier against the
>long-distance PRI we have (pulled from another CO). 22.97% of calls on=
this
>POP were CCC or Lost Carrier versus 11.92% of the other POP, and there's
>only a very small ISDN service using the ANSA POP. But isn't Lost Carrier=
a
>normal Win 95 disconnect?

Windows DUN (95/98/NT) disconnects will usually show up as
'User Request - PPP Term Req' or maybe 'User Request - Normal
LAPM Disconnect'. Some have reported that Trumpet under Win3.1
will give a Lost Carrier or Call Circuit Closed result, as will
SLIP connections.

When looking at termination cause statistics, it's also important
to see what the pattern is for a specific user. If they never
have a "PPP Term Req" or "Normal LAPM Disconnect", but instead
almost always get "Call Circuit Closed", chances are that's
normal for -their- configuration and usage pattern. (Although it
might be a very bad phone line or modem.) However, if they have
a fair number of "normal" disconnects, then the "abnormal" disconnects
are much more likely to represent unintentionally dropped connections.

The current reports people are giving are useful info, but it would
be even better if the results were massaged on a per-user basis to
reclassify some of these "abnormals" as "normal", if that's all a
user ever gets.

Michael Bryan
pmu@ursine.com

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