[SIPForum-discussion] RFC 2833 RTP Event

[amit]

Hi pradeep,

i m already have ethereal.
ethereal shows the rtp event packets
but i m not able to capture these packets via JMF Or any other program.

you have any solution regarding this.



Thank you in advance.
     
       Amit  









On Fri, 2007-06-22 at 01:18 -0400, Pradeep J wrote:

> Hi,
> You can capture the RTP packets by taking the ethereal trace ..
> The ethereal tool can be downloaded from www.winshark.com
> 
> Cheers,
> Pradeep
> 
> On 6/20/07, amit <amit.v at pyronetworks.com> wrote:
> 
>         Hi Onur,
>         
>         you are right easy to decode the digit from the incoming RTP
>         packets. But i am not able to capture these RTP packets.
>         
>         How I can capture these Packets Help me
>         
>         Thank you in advance.
>              
>                Amit  
>         
>         
>         
>         On Wed, 2007-06-20 at 13:21 +0300, Onur Cinar wrote:
>         
>         > 
>         > Hi Amit,
>         > 
>         > Actually if you take a look at the RFC 2833 you should be
>         > able to easily decode the digit from the incoming packets.
>         > The payload is 32 bits:
>         > 
>         > 8 bits  for event
>         > 1 bit  E flag
>         > 1 bit  R flag
>         > 6 bits volume
>         > 16 bits duration (in ms)
>         > 
>         > The first 8 bits hold the digit that you are looking for.
>         > Take a look at section 3.10 for the values.
>         > 
>         > Although you are only interested in the digits,
>         > take E flag in to account as well in order to make sure that you won't count the same digit more than one time. 
>         > 
>         > Regards,
>         > 
>         > -onur
>         > 
>         > 
>         > 
>         > 
>         > 
>         > ---
>         > Visit Nuvoiz.com for our SoftPhone Solutions!
>         > A. Onur Cinar - Istanbul Office Manager
>         > www.nuvoiz.com
>         > 
>         > 
>         > 
>         > 
>         > On 6/20/07, amit <amit.v at pyronetworks.com> wrote:
>         > 
>         > 
>         >         
>         >         
>         >         Hi All,
>         >         
>         >         I would like to read the specific DTMF digit from
>         >         the received RTP Event. At the moment I detect that
>         >         there are DTMF tones (RemotePayloadChangeEvent ->
>         >         Payload 101), but I have no idea to receive the "RFC
>         >         2833 RTP Event", that I see in my Ethereal Capture.
>         >         If I have this Event I think I can extract the Event
>         >         ID... 
>         >         
>         >         I would be pleased to see some ideas or helpfull
>         >         code fragments how to receive this RFC 2833 RTP
>         >         Event.
>         >         
>         >         Thank you in advance.
>         >         Amit 
>         >         
>         >         
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>         > 
>         > 
>         
>         
>         _______________________________________________
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> 
> 
> 
> 
> -- 
> Cheers,
> Pradeep
> 
> Expect the UnExpected !!!
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