On Aug 28, 2006, at 2:46 PM, RJ Honicky wrote:
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> Hi there all,
>
> I'm trying to decode a stream of ansi 801-1 messages, to get LBS
> running on my cell phone. In order to debug a problem which seems
> to be happening on the network, I have the phone contact my
> machines, on which I have a simple proxy server running which will
> forward messages back and forth to a PDE. I am running Ethereal on
> the machine and trying to examine the 801-1 packets, but ethereal
> decodes them as Apache j-server packets. I can not find 801-1 in
> the "decode as" dialog. I am using the port 8009, which is non-
> standard if I recall correctly, so this could be part of the
> problem, but my understanding is that I should be able to decode any
> of the protocols by selecting them in the decode as dialog.
You should be able to decode any protocol *for which Wireshark (see
above) has a dissector that's configured to run atop TCP or UDP* by
selecting them in the "decode as" dialog.
Unfortunately, the ANSI IS-801 dissector isn't one of them. It's
configured to run atop the ANSI MAP and ANSI A Interface dissectors.
On top of what protocol is your stream of ANSI 801 messages being
transported? ("On top of" meaning "*Directly* on top of", not
"somewhere on top of", i.e. what's the protocol *immediately* below
it; if some protocol's being transported atop TCP or UDP, and ANSI 801
is being transported atop that protocol, ANSI 801 isn't being
transported "on top of TCP" or "on top of UDP" for the purposes of
this question.)
> Also, is there any freely available reference from IS-801-1? What
> reference was used to build the decoder? The only one I can find
> costs $280.
http://www.3gpp2.org/Public_html/specs/C.S0022-0_v3.0_121203.pdf
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