[OpenSIPS-Users] RFC2833 to INFO

Mark Farmer farmorg at gmail.com
Mon Mar 18 12:18:34 EDT 2019

Thanks Bogdan. I was beginning to fear as much but I do need a solution for
this. I will try to explain the problem in more detail.

Our 3rd party is a secure payment gateway and only receives audio following
a SIP RE-INVITE. This is to re-route the audio so that DTMF tones can be
removed. At this point the DTMF is required to be transmitted to the 3rd
party as SIP INFO messages. Once the payment process is complete, there is
another SIP RE-INVITE to switch the audio back to it's original path.

What I have is OpenSIPS & RTPProxy combination but this is a PoC platform
so I can change things. Is there a method to have an RTP proxy instruct
OpenSIPS to generate SIP INFO messages and send them to the 3rd party? It
doesn't matter if we end up with both RFC2833 and SIP INFO - the 3rd party
will just act on the INFO messages.


On Mon, 18 Mar 2019 at 15:37, Bogdan-Andrei Iancu <bogdan at opensips.org>

> Hi Mark,
> You cannot do this with OpenSIPS, mainly as OpenSIPS has no access to RTP
> in order to "see" the RFC2833 DTMFs.
> Regards,
> Bogdan-Andrei Iancu
> OpenSIPS Founder and Developer
>   https://www.opensips-solutions.com
> OpenSIPS Summit 2019
>   https://www.opensips.org/events/Summit-2019Amsterdam/
> On 03/18/2019 04:24 PM, Mark Farmer wrote:
> Hi everyone
> I have an OpenSIPS server with trunks to a provider and to a 3rd party and
> routing calls between the two. The provider sends DTMF as RFC2833 but the
> 3rd party requires SIP INFO. Somehow I need to translate from RFC2833 to
> SIP INFO - is this possible?
> Many thanks
> Mark.
> --
> Mark Farmer
> farmorg at gmail.com
> _______________________________________________
> Users mailing listUsers at lists.opensips.orghttp://lists.opensips.org/cgi-bin/mailman/listinfo/users

Mark Farmer
farmorg at gmail.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20190318/720ea282/attachment.html>

More information about the Users mailing list