call forwarding ....major issue!

i have only 2 options: to forward if "no answer in 20 minutes, busy or unavailable" or not to forward!!!

one needs a wider range of options

is there a bug report somewhere that i could vote for?


also ... i confirm something i read on a thread ... with call waiting on ... if i'm on a sip call and i receive a gsm call ...
i get a gsm call notification, but the call is disconnected after the firts beep