Andrew Kohlsmith wrote: > On Monday 05 February 2007 8:26 am, Stefano Corsi wrote: >> Uhm... I still don't understand... Does call progress detection work >> fairly well for analog cards with the US telephony system, or it's >> still something experimental and randomly working? And if it's >> working in US, how difficult can it be to port it to the (for >> example) Italian system? > > Put it this way: Any serious Asterisk install that wants to pass the wife > test > will have "progressinband" turned off in a fairly short order.
For those of us without first-hand experience here, what happens when using "progressinband"? My own experience is that call progress detection -- mostly with respect to remote hangup detection -- is spotty, and I'm in North America. >> As an alternative, what about having a device (let's say Inalp Patton >> gateways) connecting to the telco with ISDN and to Asterisk with >> ethernet/SIP. Should I get correct ANSWER detection (and thus correct >> billing CDR records) with this setup? > > I think you're starting to reach beyond what's practical. But yes, something > like that would work just fine, because both ISDN BRI/PRI and SIP are digital > protocols and employ the concept of line state beyond the simple "on > hook/offhook". ...and at this point, why wouldn't you just put a BRI card in the Asterisk server and skip the intermediate hardware? -Stephen- _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users