comparison doc/Host-tools-overview @ 912:3ed4f53c6092

doc/Host-tools-overview: update fc-tch2fr bogon description
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 29 Dec 2022 21:24:53 +0000
parents 7077d02ed3b1
children 1b8929cb7371
comparison
equal deleted inserted replaced
911:7077d02ed3b1 912:3ed4f53c6092
247 phone or other GSM device, but fc-simtool can also be invoked 247 phone or other GSM device, but fc-simtool can also be invoked
248 indirectly via fc-simint, in which case it operates on SIM cards 248 indirectly via fc-simint, in which case it operates on SIM cards
249 inside Calypso devices. 249 inside Calypso devices.
250 250
251 fc-tch2fr This hack-utility takes a TCH downlink recording produced with 251 fc-tch2fr This hack-utility takes a TCH downlink recording produced with
252 the tch record command in fc-shell and converts it to a playable 252 the tch record command in fc-shell (specifically, the old format
253 libgsm file which will most likely contain some garbage by 253 that will only be produced if the source of TCH DL bits is a
254 disregarding the non-understood DSP status words; see the 254 very old FC firmware version) and tries to convert it to a
255 playable libgsm file (containing garbage frames in reality,
256 resulting in very unpleasant noises on subsequent decoding) by
257 completely disregarding the DSP status words which were not
258 understood back when this hack was written in 2016. See our
255 TCH-bit-access article for more information. 259 TCH-bit-access article for more information.
256 260
257 fc-tmsh TI-based GSM firmwares provide a rich set of Test Mode commands 261 fc-tmsh TI-based GSM firmwares provide a rich set of Test Mode commands
258 that can be issued through the RVTMUX (debug trace) serial 262 that can be issued through the RVTMUX (debug trace) serial
259 channel, used for L1/RF test functions, production line RF 263 channel, used for L1/RF test functions, production line RF