>
> pppd is not receiving any response to the LCP requests and
> it gets tired of asking. Using the passive option simply
> tells pppd to wait until it receives ppp packets before
> starting negotiation. Either way, you're getting nowhere
> fast because you are not receiving any data.
>
> My suggestion would be to:
>
> 1. Check your tx packets are actually getting to the external
> device (with a breakout box, a scope, diagnostics on the
external
> modem - whatever.)
>
> 2. If your outbound packets are getting through, trace the path of
> the return packets, back from the modem using the same tools.
>
> Frequent culprits here are the RS232 control lines. Look out
> for your modem needing RTS/CTS before sending data once it is
> on connected mode.
Hi Andy,
Thanks for your reply.
Is there a way in Linux to log all communication from ttyAM1 to a
file?
I will look at the CTS/RTS lines with a breakout box. I know for
sure ttyAM1 does not have these lines, and there is an AT command in
the modem to turn flow control off. But my question is this, if the
CTS/RTS was the culprit how come I can see my Chat get executed? So
if I can send the atd*99****1# command and see OK back, can't I
assume that at least CTS/RTS is ok?
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