Hi,
For the past 5 hours or so, I've been trying to decipher bursts I
grabbed off the air but without success. I hope someone here would
know better ...
The bursts are from a private test network, the first (well, second
since I didn't take the SAACH burst) SDCCH8 message on the downlink
(from BTS).
time: fn=2597379 t1=1958 t2=05 t3=00 (for the first burst)
Kc : d0 9b bc 97 1b 4c 90 00
Here are the burst data.
4 bursts. Each time there is 3 * 116 bits:
- 116bits of data (stealing bits in position 57 58)
- 114bits of a5/1 bitstream (there is a X in position of the stealing bits)
- 116bits of data XOR a51_stream.
---
1001010000010101111001100100110000110011110010100011001011
1011111011100010010000110011010110110001010110100110111111
110011110111110101111101100100001110101101100110110000101X
X010110000110101111000000100010110001101101011100110110010
0101101101101000100110111101110011011000101011001111000001
1001001011010111101000110111000000111100111101000000001101
----
0111011111010010011010111010101111001100000010001001111001
1100111101101100101101111100110001111100111100010010000101
111111110000101010001011111000100110010011000111011101001X
X110001011001001010101011001011110100011101101011100110101
1000100011011000111000000100100110101000110011111110101011
1010110110100101111000100101101111011111010001001110110000
----
0000100111111001011100011101011010101110110001111100111111
1010100100111111101100011100001000001111010011100011101100
001111000001011100111011111011101010010111111001010110011X
X001011000111110100101110101001001110000000011000000110100
0011010111101110010010100011100000001011001111101001011001
1011111100000001001001101001000001111111010000100011011000
----
1111001110011001101101100110001000110010100101010110101011
1010000110111011111011001001001111110100111100101101111001
010010101111010001010100001101110100011010110111000001110X
X100010011111011010000010010000111111000101110110011100001
1011100101101101111000100101010101110100001000100110110111
1110010101000000101011011011001000001100010010011110011000
----
Can somebody please try to decipher those and compare to my output ?
Sylvain
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