On Sun, Dec 1, 2013 at 6:29 PM, Siri MM <sirimmfs@gmail.com> wrote:
Hi,
I have been using Sangoma A102 card with wanpipe-3.5.28 and FS 1.2.8.
At a couple of different customer sites, common issue reported is, when a call is made from external world (mobile/fixed line), although the destination extension rings, no ringback is heard at the caller end.
Extension dialplan is to bridge to the desired extension, something like: <action application="bridge" data="user/3001" />
On capturing the isdn traces, I see that packet exchanges involve SETUP, CALL PROCEEDING, and ALERTING (with a progress indicator saying "Call is not end-to-end ISDN - progress information available in-band")
After experimenting a bit, what I find is, ringback is heard if I were to modify my dialplan as follows: <action application="ring_ready" /> <action application="set" data="ringback=$${uk-ring}"/> <action application="bridge" data="user/3001" />
This time, ISDN traces have the following: SETUP, CALL PROCEEDING, ALERTING (with a progress indicator saying "Call is not end-to-end ISDN - progress information available in-band"), and PROGRESS (with a progress indicator saying "In-band information or an appropriate pattern is now available")
My question is, while working with FreeTDM, do I need to always set ringback explicitly? Could somebody please help me understand this correctly?
Not always. It depends very much on your situation. In many cases the telco plays the media regardless of what you send. In your case it seems you want to bridge the call to a given SIP endpoint. My guess is that SIP endpoint is never sending 183 or even if it sends 183 is not sending media. In such cases, if you want to provide media, yes you have to execute ring_ready and let FreeSWITCH play the media (ie, through the ringback variable, using playback, etc) Moy *Moises Silva**Manager, Software Engineering* msilva@sangoma.com Sangoma Technologies 100 Renfrew Drive, Suite 100, Markham, ON L3R 9R6 Canada t. +1 800 388 2475 (N. America) t. +1 905 474 1990 x128 f. +1 905 474 9223 <http://www.sangoma.com/contact?utm_source=signature&utm_medium=email&utm_campaign=email+signatures> Products<http://sangoma.com/products?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Solutions<http://sangoma.com/solutions?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Events<http://sangoma.com/about_us/events?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Contact<http://www.sangoma.com/contact?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Wiki<http://wiki.sangoma.com/?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Facebook<http://www.facebook.com/pages/Sangoma-VoIP-Cards/43578453335?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures> | Twitter<http://www.twitter.com/sangoma?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures>`| | YouTube<http://www.youtube.com/sangomatechnologies?utm_source=signature&utm_medium=email&utm_campaign=email%2Bsignatures>