Paul Stear wrote:
>
> On Monday 24 December 2001 02:37, you wrote:
> > Paul Stear wrote:
> > > I am using KPPP to connect and gftp for transfers and I keep getting the
> > > modem disconnected even whilst transferring data.
> > > I have not been able to find any settings about disconnect if idle.
> >
> > Missed much of this discussion; but any chance you have Call Waiting on
> > that line...? If so, there is usually a per-call code you can use to
> > disable it... "*70" or somesuch...
> >
> > Pierre
> Thanks for your reply, I do not have call waiting. The problem is strange in
> that in the middle of downloading mail the transfer as seen on the graph goes
> to zero and then I get an error message with error 16 (modem disconnected)
> from kppp. The same happens when transferring updates. I just do not know
> what to try next.
OK... other strange things I've seen:
1. features other than call-waiting may interrupt the line momentarily; if you
hear any strange sounds/silence while using the phone line normally, that would
be a clue.
2. had 2 lines, everytime other line rang, modem would drop... found a staple
through the phone cable which now had a carbon path due to a lightning storm --
was fine before the storm.
etc...
Does the line drop after a specific amount of time, or at specific times? Say x
minutes after starting a transfer, or always at y minutes past the hour...? In
this sort of situation, it sometimes helps to have extra stats available...
keep a log of start time, activity, drop time, etc. If you don't have any luck
finding the problem through normal means, analysis of these stats may show some
commonality which might help...
Cconnections are usually dropped by one of:
- interruption in the line
- ISP dropping
- lack of [perceived] activity (misconfiguration at ISP?)
- enforcing fair access when all lines busy (ISP policy*)
- bad cables/connectors
- try proding your cables and connectors to see if that causes the line to
drop
- bad card/modem bouncing DTR, DSR or CXR
- a 1ms bounce is enough to cause problems
- need a scope to find this one...
* ISP really needs more lines
HTH,
Pierre
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