НАРОД! Ну неужели никто не ковырял GSM? Неверю.
Кто разбирается, скажите, это то что я ищу? Ну уж очень интересно все это к компу приделать...
ps:желательно отвечать на мыло: DeadStar@iname.com
Я нашел следующую информацию:
Each timeslot within a TDMA frame contains modulated data referred to as a
"burst". There are five burst types (normal, frequency correction,
synchronization, dummy, and access bursts), with the normal burst being
discussed in detail here.
The bit rate of the radio channel is 270.833
kbit/sec
, which corresponds to a timeslot duration of 156.25 bits. The
normal burst is composed of a 3-bit start sequence, 116 bits of payload, a
26-bit training sequence used to help counter the effects of multipath
interference, a 3-bit stop sequence required by the channel coder, and a guard
period (8.25 bit durations) which is a "cushion" to allow for different arrival
times of bursts in adjacent timeslots from geographically disperse MSs. Two
bits from the 116-bit payload are used by the Fast Associated Control Channel
(FACCH) to signal that a given burst has been borrowed, leaving a total of 114
bits of payload. Figure 2 illustrates the structure of the normal burst.