RE: Mobile Broadband - how do I trace/debug the modem initialisation?

[Rick Jones <rick activeservice co uk>]

--On Tuesday, October 21, 2008 14:08:25 -0400 Dan Williams <dcbw redhat com> wrote:
¦ On Tue, 2008-10-21 at 19:16 +0200, Main, Craig wrote:
......
¦ > --> Modem initialized.
¦ > --> Sending: ATDT*99***1#
¦ > --> Waiting for carrier.
¦ > ATDT*99***1#
¦ > ~[7f]}# !}!}!} }9}#}%B#}%}(}"}'}"}"}&} } } } }%}&mG!;J[1d]~
¦ 
¦ Holy crap, WTF is that???  I know you don't know, but wow.  That can't
¦ be a valid standards-compliant implementation.

AFAIK that's the PPP negotiation. If you manually open a connection to any PPP wserver with minicom or equiv. that stuff comes back. Usually the modem returns CONNECT first, and the device is handed over to the PPP code so this doesn't get traced, but here CONNECT comes later, and then we see that PPP is correctly detected:

¦ > CONNECT
¦ > --> Carrier detected.  Waiting for prompt.
¦ > ~[7f]}# !}!}"} }9}#}%B#}%}(}"}'}"}"}&} } } } }%}&mG!;[06]p~
¦ > --> PPP negotiation detected.