--- /dev/null
+-- README-AT --
+-- Notes, bugs and a todo list for AT command compatible modems --
+
+* Notes *
+
+General PDU documentation can be found on:
+ http://www.siemens-mobile.de/pages/wm/downloads/m20_sms.pdf
+General AT commands documentation can be found on:
+ http://www.siemens-mobile.de/pages/wm/downloads/tc35_at_e.pdf
+
+Although this documentation is for Siemens devices, your modem will probably
+support some subset (or superset?) of it. Official standard document could be
+probably also found in www.etsi.org library.
+
+
+Successfuly tested:
+
+Siemens M20
+ (provided by the courtesy of Lubor Otta)
+ ATI1 --> SIEMENS M20 Revision: 5.4, 13.12.00 13:15
+
+ gnokiirc argument "serial_write_usleep" MUST be >=1 otherwise
+ the device communication is very unreliable.
+
+Nokia Communicator 9000i
+ ATI2 --> SW6.36 : HW0320
+
+ Only +CMGF==1 mode capable so no logo/ring send/receive.
+ No +CNMI new SMS reporting so their detection is slow (+CMGL).
+ Unable to receive SMSes to SIM so no Gnokii SMS receive possible.
+ No +COPS/+CREG so no network code detection, set it manually.
+
+Nokia Communicator 9110
+ (provided by the courtesy of Karel Zatloukal)
+ ATI2 --> SW 4.05: HW 3600
+
+ Only +CMGF==1 mode capable so no logo/ring receive but it can send!
+ No PhoneBook commands supported so no contacts access available.
+ Unable to receive SMSes to SIM so no Gnokii SMS receive possible.
+ No +COPS/+CREG so no network code detection, set it manually.
+
+Nokia Communicator 9210
+ ATI2 --> SW03.54
+
+ No PhoneBook commands supported so no contacts access available.
+ Unable to receive SMSes to SIM so no Gnokii SMS receive possible.
+ No +COPS/+CREG so no network code detection, set it manually.
+
+Nokia CardPhone
+ (provided by the courtesy of Tim Boudreau)
+ ATI2 --> SW4.23
+
+ No known disadvantages.
+
+
+* Known Bugs *
+
+* To-do *