Re: Dump required for multiplexed streams

[shruti singh <shruti.is.singh () gmail com>]

Hi,

I was asking for  RTP multiplexed streams according to TS29414 release 7.3.0

Thanks & Regards,
Shruti

On Tue, Nov 3, 2009 at 8:19 PM, Jaap Keuter <jaap.keuter () xs4all nl> wrote:

> Hi,
>
> I'm not aware of multiplexed RTP streams being dissected by Wireshark.
> What RFC's are you referring to in the text below ?
>
> Thanx,
> Jaap
>
> On Tue, 3 Nov 2009 17:19:51 +0530, shruti singh
> <shruti.is.singh () gmail com>
> wrote:
> > Hey
> >
> > I have taken the wireshark dev image to decode multiplexed streams.Can
> you
> > provide me any dump for multiplexed streams which I can decode in
> wireshark
> > Thanks & Regards
> > Shruti
> >
> > On Wed, Aug 26, 2009 at 11:06 AM, shruti singh
> > <shruti.is.singh () gmail com>wrote:
> >
> > > Hi
> > >
> > > I need to decode RTP Multiplex streams using wireshark. Presently we
> can
> > > decode only Non -Multiplexed RTP streams in wireshark.
> > >
> > > A multiplexed voice packet is composed by concatenating RTP
> encapsulated
> > > voice packets and IP and UDP headers.
> > >
> > >  Below is the Multiplex Packet format
> > >
> > >
> > >
> > > IP
> > >
> > > UDP
> > >
> > > Multiplex Header
> > >
> > > Compressed RTP Header
> > >
> > > RTP Payload
> > >
> > > Multiplex Header
> > >
> > > Compressed RTP Header
> > >
> > > RTP Payload
> > >
> > >
> > >
> > > This Multiplex header is repeated in beginning of each RTP packet. So I
> > > was
> > > thinking of way to extract this multiplex header & use it to decode
> each
> > > RTP
> > > packet following this Multiplex header.
> > >
> > > I supose we need to make a dissector packet-rtpmultiplex.c regestring
> to
> > > a
> > > UDP port as a starting point.
> > >
> > > Dissect the multiplex header, decompress the rtp header and have the
> RTP
> > > dissector dissecting
> > > the resulting "RTP packet" - decompressed header+data.
> > >
> > > Could you help me in dissecting the multiplex header and make this
> work.
> > > Also I need to know the steps to write our own filters in wireshark
> > >
> > >
> > > It would be great help. Kindly reply as soon as possible
> > >
> > >
> > > Regards
> > >
> > > Shruti
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