FreeCalypso > hg > fc-pcsc-tools
comparison doc/User-oriented-commands @ 136:5494795406e0
doc/User-oriented-commands: FDN enable/disable documented
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 21 Feb 2021 01:05:05 +0000 |
| parents | 49f259cdb39e |
| children |
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| 135:49f259cdb39e | 136:5494795406e0 |
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| 122 This command retrieves the IMSI (International Mobile Subscriber Identity) from | 122 This command retrieves the IMSI (International Mobile Subscriber Identity) from |
| 123 the SIM - it is the most fundamental ID token by which GSM phones present | 123 the SIM - it is the most fundamental ID token by which GSM phones present |
| 124 themselves to networks, and they even use the first 5 or 6 digits of the IMSI | 124 themselves to networks, and they even use the first 5 or 6 digits of the IMSI |
| 125 to decide which network they should try connecting to first. | 125 to decide which network they should try connecting to first. |
| 126 | 126 |
| 127 It should also be noted that if your SIM has FDN (Fixed Dialing Numbers) enabled | |
| 128 and the card implements GSM SIM specs to the letter, including the idiotic | |
| 129 parts, then you will need to issue a rehab-imsi command before you can read the | |
| 130 IMSI record - see the FDN section further in this document. | |
| 131 | |
| 127 sst | 132 sst |
| 128 | 133 |
| 129 Every SIM card is required to have an essential data record (an EF in technical | 134 Every SIM card is required to have an essential data record (an EF in technical |
| 130 terms) called the SIM Service Table, or SST. This SST indicates which services | 135 terms) called the SIM Service Table, or SST. This SST indicates which services |
| 131 are allocated and activated on the given SIM. Our sst command lists all | 136 are allocated and activated on the given SIM. Our sst command lists all |
| 286 pb-erase-range PBNAME start-rec end-rec | 291 pb-erase-range PBNAME start-rec end-rec |
| 287 | 292 |
| 288 This command erases the specified range of records in the named phonebook. The | 293 This command erases the specified range of records in the named phonebook. The |
| 289 starting record must be identified by number (SIM record numbers are 1-based); | 294 starting record must be identified by number (SIM record numbers are 1-based); |
| 290 the ending record argument may be either a number or the "end" keyword. | 295 the ending record argument may be either a number or the "end" keyword. |
| 296 | |
| 297 Enabling and disabling FDN | |
| 298 ========================== | |
| 299 | |
| 300 The Fixed Dialing Numbers (FDN) mechanism is normally disabled. The protocol | |
| 301 prescribed by GSM SIM specs is that FDN is enabled when the regular ADN | |
| 302 phonebook is invalidated, and is disabled (unrestricted dialing allowed) | |
| 303 otherwise. fc-simtool provides commands for invalidating and rehabilitating | |
| 304 ADN, thereby enabling and disabling FDN: | |
| 305 | |
| 306 inval-adn | |
| 307 | |
| 308 This command invalidates ADN and thereby enables FDN. | |
| 309 | |
| 310 rehab-adn | |
| 311 | |
| 312 This command rehabilitates ADN and thereby disables FDN. | |
| 313 | |
| 314 The SIM will only allow inval-adn and rehab-adn operations after you have | |
| 315 successfully authenticated with PIN2 - see verify-pin2 command description. | |
| 316 | |
| 317 GSM SIM specs also stipulate a certain hack to prevent FDN-ignorant phones from | |
| 318 making "forbidden" unrestricted calls: the specs stipulate that when a SIM | |
| 319 powers up in an FDN-enabled state (ADN is invalidated), the "smart" logic in | |
| 320 the SIM invalidates two essential files EF_IMSI and EF_LOCI (needed for GSM | |
| 321 operation), requiring the phone (ME) to rehabilitate these two files at the | |
| 322 beginning of every SIM session when FDN is in use. The thinking must have been | |
| 323 that if a given ME knows how to do these extra rehab-imsi, rehab-loci steps, | |
| 324 then it also knows about FDN and will honor it. Our answer: OK, whatever - but | |
| 325 we do provide rehab-imsi and rehab-loci commands in fc-simtool. These | |
| 326 operations require only CHV1 access, thus PIN1 or no PIN at all depending on | |
| 327 whether or not PIN1 is enabled - no need for PIN2. | |
| 291 | 328 |
| 292 Last Number Dialed (LND) | 329 Last Number Dialed (LND) |
| 293 ======================== | 330 ======================== |
| 294 | 331 |
| 295 Traditional SIMs include a cyclic file that is intended to be updated whenever | 332 Traditional SIMs include a cyclic file that is intended to be updated whenever |