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Descepancy in 7-to-8 bit decoding
From: Ajay Garg <ajaygargnsit () gmail com>
Date: Sun, 12 Jan 2014 11:50:54 +0530
(This might actually serve as a follow-up to
since the issue this time is a bit different, I preferred starting a new
thread, so as not to clutter up things).
We captured some USSD network traces, and found that the following *7-bit
encoded* message was being transferred over the wire :
Wireshark shows the decoded-message to be
*Bal Rs.36.8. More dial *111*1#.STD¡10p/Min! Do RC59 and enjoy STD Calls to
Any Network ¡10p/m. VAL 28days. T&C Apply.*
while our 7-to-8 bit decoder shows this to be
*Bal Rs.36.8. More dial *111*1#.STD () 10p/Min! Do RC59 and enjoy STD Calls to
Any Network @10p/m. VAL 28days. T&C Apply.*
(Note the difference of "¡" and "@").
The wireshark rpm being used is wireshark-1.6.16-2.fc17.i686
Is this another case of using a special charcater ("*¡*" in the present
case), when some particular byte-stream is received?
Or am I being plain stupid?
We will be grateful for some pointers, that could help clear our doubts !!
Looking forward to a reply
Thanks and Regards,
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- Descepancy in 7-to-8 bit decoding Ajay Garg (Jan 12)