[Sipsak] read device status

[Francesco]

hi to all.

here is my question:
i wish to read the state (ready - idle - busy - ringing) of some devices 
(snom 320) to implement blf function.
- i used "hints" but i can't catch the state of the device between the 
moment when the user pick-up his phone and when start dialing. -

is there a way to use sipsak to do such a work?
and in case could someone give the sipsak command / the sip string?

thanks.