http://netbsd.i2p/docs/guide/en/chap-bluetooth.html
> +CIND: ("call",(0,1)),("service",(0,1)),("call_setup",(0-3)),("callsetup",(0-3))
> OK
< AT+CIND?
> +CIND: 0,1,0,0
> OK
< AT+CMER=3,0,0,1
> OK
< AT+CLIP=1
> OK
Service Level established When the phone rings, just press a to answer, and audio should be routed through the /dev/audio device.