Wireshark-bugs: [Wireshark-bugs] [Bug 9478] GSM SMS UDH fill bits still incorrect

Date: Thu, 28 Nov 2013 21:25:22 +0000

Comment # 7 on bug 9478 from
I believe that the current code is valid for 7bit GSM encoding. Please have a
look at how the septets are encoded in 3GPP 23.038 chapter 6.1.2.1.1 (last bits
of septet n-1 are put in the least significant bits of the byte).
3GPP 23.040 figure 9.2.3.24 does not represent how 3bit GSM alphabet is packed
and is misleading (I have to rethink a bit about it myself).
I agree that for 7 bit ASCII, the fill bits will be in the most significant
bits and I will do the change accordingly.


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