1) a hayes modem simulator, implementing a basic hayes cmd stack:
    ATA, ATD, ATH, AT+CLCC, AT+CFUN, AT+CPAS
  events:  +CR, +CRING, <CONNECT>, <NO CARRIER>, +CSQ: ...

2) a hayes client, able to parse answers from any hayes device.


3) a gsm network simulator, which can make calls, with various timings, introduce various kinds of data trouble

4) a hack to forward ril's communication through my driver, which redirects all traffic over tcpip -> activesync
   to the hayes modem simulator