20 Apr
2012
20 Apr
'12
5:33 p.m.
Max,
On Fri, Apr 20, 2012 at 19:09, Max <Max.Suraev(a)fairwaves.ru> wrote:
- what is CKSN IEI and how do I calculate\use it?
IEI is a Information Element Identifier, which is a part of TLV-coded
(Type-Length-Value) Information Elements (IEs). In other words, IEI
represents type (T) of the data payload which follows it. TLV is an
encoding used in most of the classical GSM protocols. I don't recall
where it is described in the Standard, but here is a nice paper which
you easily find on Google which describes ciphering and described TLV
structure as well (section 6.1.2):
http://www.cs.ru.nl/~fabianbr/scriptie.pdf
--
Regards,
Alexander Chemeris.
CEO, Fairwaves LLC / ООО УмРадио
http://fairwaves.ru