Yan,
This is a good suggestion. I had not thought of it being a local
problem. Even when I do connect I sometimes still see the "input
overrun(s)" error. So it makes perfect sense.
I don't really know how to reconfigure the Serial port to fix this
though? It's the Com5 (/dev/tts/4) port that is created from the
PC104 bus connection. I have setserial and a few other tools but
these just adjust the baud rates and such. How would I go about
making changes to the port?
Bill
--- In "Yan Seiner" <> wrote:
>
> --- In "BillBergeron" <billbergeron@>
wrote:
> >
> > This LCP negotiation has me stumpted. Just when I thought I had
> > finally figured this all out. After doing some research on LCP, I
> > realize that these are send packets to the ISP (Cingular) and am
not
> > getting any packets back from them. So they are either being
blocked
> > (very doubtful since it comes from their cell towers), they don't
> > understand the LCP packets I'm sending, or they are just not
sending
> > them. I changed, removed, and added every PPP option I could
(auth,
> > noauth, require-pap, require-chap, ascnymap, nomagic, lock,
local,
> > passive) and other than changing the data in the packet it
doesn't
> > seem to make a difference. I am going to look into the PPP
related AT
> > commands to see if I have to do anything to put the modem into
the
> > correct mode before the LCP packets are sent but other than that
I am
> > stuck.
> >
> > If anyone has a suggestion I would be happy to hear it.
> >
>
> OK, here's a guess:
> > > >
> > > > I changed CONNECT "" to CO "" and it seems to work...sort of.
I
> > seem
> > > > to establish a connection but then the negotiation seems to
fail.
>
>
> I'd figure out why your incoming serial port can't handle the
CONNECT
> string... If you have a buffer overrun, then LCP would fail as it
> can't get good data in.
>
> Can you set up a test modem to dial in to? Set it up on a serial
line
> and run mgetty on it. See if you can connect from your cell modem
to
> the test modem just with pure ASCII communication.
>
> It sounds like either a bad or misconfigured serial port, at a lower
> lever than PPP.
>
> --Yan
>
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