On Thursday 05 Jun 2014, Mojtaba wrote: > My scenario is (2) After doing some tests with my own hardware, I'm now convinced that this is actually normal behaviour: As far as Asterisk is concerned, a call is deemed "answered" as soon as the hardware seizes the line. It is only "not answered" if the line is not available.
Which makes sense, because an analogue line has no D-channel. Once the trunk is acquired successfully, there is no way for a machine to know the state of the call beyond then. Such supervisory information as there is -- a regular cadence during ringing, possibly a burst of white noise and then a human voice -- is geared towards interpretation by human beings. Moerover, since the tones are different in every country (and sometimes, between different telephone exchanges in the same country; at one time, the UK was using three sets of supervisory tones depending whether you were on an old-fashioned "clicky-clicky" exchange, an intermediate-generation analogue electronic exchange or System X) it would not be a trivial task to make sense of them. I think if you want full supervisory information, you are going to need to use some sort of digital telephony technology (ISDN or GSM). -- AJS Note: Originating address only accepts e-mail from list! If replying off- list, change address to asterisk1list at earthshod dot co dot uk . -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
