Ethereal-users: [Ethereal-users] using ethereal to decode dtap packets

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From: "Williams, Ken" <ken.williams@xxxxxxxxxxxxx>
Date: Tue, 14 Jun 2005 10:43:14 +0100
Hi,
I am attempting to use ethereal to decode a propriatory trace from one of
out mobile phones.
I have written a script that convets the trace to a hex dump suitable for
the text2pcap program.
I have run the text2pcap program and produced a pcap file.
I have set the gsm dcap setting in the enabled protocols.
Having done this, ethereal will read in the packets and display them. The
problem is that it will not decode them. I just get UNKNOWN WTAP_ENCAP = 1.
I suspect that the problem is that each packet just contains the infomation
that was sent over the radio but the protocol decoder also requires
information about the SAP to also be in the trace.

My question is how do I include this information.

Thanks
Ken Williams