[asterisk-dev] SDP negotation problem

[Salvatore Frandina]

Yes, they say that at moment VLC can only send RTP packets with 96 dynamic
payload. How can I solve it?
I'm not expert programmer.




2010/2/9 Kristian Kielhofner <kristian.kielhofner at gmail.com>

> On Tue, Feb 9, 2010 at 3:46 AM, Salvatore Frandina
> <salvatore.frandina at gmail.com> wrote:
> > I'm using SIPp not with pcapplay only with modified uac scenario. I have
> > adapted the uac.xml scenario for my purposes.
> > VLC can't choose the payload type but it selects the first dynamic
> payload
> > type 96. The strange thing is that my application works with Asterisk 1.6
> > family but not with Asterisk 1.4. Hence I think that there is a bug in
> one
> > on these version.
> > I can't understand why response of Asterisk is different from request by
> > SIPp+VLC...
> > PS I have attached the scenarios sipp.xml and SIP message between SIPp
> and
> > Asterisk.
> >
>
> Salvatore,
>
>  Kevin and Olle have already explained that Asterisk 1.6 has a
> different codec negotiation scheme that will (even though it doesn't
> need to) attempt to use the same payload type as the far end.  Just
> because it is different does not mean that 1.4 is broken or invalid.
> They've already quoted the relevant RFCs that back up Asterisk in this
> case.
>
>  Changing the payload type in your sipp scenario is simple.  VLC
> starting at 96 is not a problem but if it expects Asterisk to use the
> same dynamic payload type it is broken.  Have you asked the VLC
> developers about this?
>
> --
> Kristian Kielhofner
> http://www.astlinux.org
> http://blog.krisk.org
> http://www.star2star.com
> http://www.submityoursip.com
> http://www.voalte.com
>
> --
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-- 
_______________________________________
Salvatore Frandina
website: http://frandinas.altervista.org
mail: salvatore.frandina at gmail.com

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