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Wireshark-users: Re: [Wireshark-users] Decoding problem in ANSI MAP messages

From: "Anders Broman" <a.broman@xxxxxxxxx>
Date: Wed, 1 Apr 2009 18:25:37 +0200
Hi,
I Committed a fix in revision 27923. The problem is that the dissector is
assembled from a number of standard documents and the may be cut-and-paste
Errors, missed updates etc. And a poor standard at that in my opinion...
Regards
Anders

-----Ursprungligt meddelande-----
Från: wireshark-users-bounces@xxxxxxxxxxxxx
[mailto:wireshark-users-bounces@xxxxxxxxxxxxx] För Sanjay Nayak
Skickat: den 1 april 2009 14:49
Till: wireshark-users@xxxxxxxxxxxxx
Ämne: [Wireshark-users] Decoding problem in ANSI MAP messages

Hello

I want to decode the ANSI MAP Authentication Failure Report message in
the latest wireshark.



According to the section 2.4 of the spec.

http://www.3gpp2.org/Public_html/specs/X.S0004-540-E_v2.0_070723.pdf

Here there are seven mandatory parameters for the message
Authentication Failure Report.

1. Electronic serial number
2. MSID(i.e MIN/IMSI)
3.Report Type
4.System Access Type
5.System Capabilities(Serving)

That i have already given in my message.

But here for the parameter MSID,
if i give IMSI instead of MIN. Then it shows
BER Error: Unknown field in SET class:CONTEXT(2) tag:242.

Also it shows two tag errors at the last

1.BER Error: Missing field in SET class:CONTEXT(2) tag:8 expected
2.BER Error: Missing field in SET class:CONTEXT(2) tag:44 expected


That means it  considers two extra parameters as mandatory. Plz
suggest what is the problem with it?

For parameters the spec is

http://www.3gpp2.org/Public_html/specs/X.S0004-550-E_v2.0_070723.pdf


Regd's
Sanjay
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