[SIPForum-discussion] How to find packet is SIP or RTP

[mehmet]

Hi,

SIP is a text based protocol.So it is easy to distinguish the packets from
each other.But in which area do you want to see?
For example if you are using an application runs over any SIP Stack, SIP
Stack gives you the packet as text or how it is configured
Otherwise you have to use wireshark, it distinguished the packets which it
captured and it shows the packet type (SIP, RTP, ARP, NTP, HTTP etc ...)
also
write headers in meaningfull.
Otherwise it may be difficult to understand the packet type inside a raw IP
packet which just you will see hex numbers.

I hope this infor clarifies your question.

Regards.
Mehmet

2011/4/5 Gopalakrishnan A.N <saigop at gmail.com>

> SDP - Session Description Protocol is the information used while RTP is
> transferred. The messages are Time description, media description and
> session description. Check this RFC http://tools.ietf.org/pdf/rfc3550.pdf
>
>
> On Tue, Apr 5, 2011 at 5:25 PM, mohit <mohitm at cdac.in> wrote:
>
>> Hi,
>>
>> I have a doubt that by looking at the UDP packet, how to find out if the
>> packet is SIP or RTP. We cannot use destination port info as some
>> servers may use port other than 5060 (Default port for SIP).
>> What field should be used while parsing the packet to identify if packet
>> is SIP or RTP?
>>
>> Regards
>> Mohit.
>>
>>
>> --
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>
>
>
> --
> Thank you  with regards,
> Gopalakrishnan A.N.
> VoIP call - sip:saigop at gtalk2voip.com
>
>
>
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