[SIPForum-discussion] Re: (瑞星提示-此邮件可能是垃圾邮件)Re: [SIPForum-discussion] RFC 2833 RTP Event
wellya
wellya at wellya.net
Fri Jun 22 09:11:54 UTC 2007
capture packet in ethereal ,pls point interface
wellya
2007-06-22
发件人: amit
发送时间: 2007-06-22 13:53:24
收件人: Pradeep J
抄送: discussion at sipforum.org
主题: (瑞星提示-此邮件可能是垃圾邮件)Re: [SIPForum-discussion] RFC 2833 RTP Event
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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Cheers,
Pradeep
Expect the UnExpected !!!
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