--- In "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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