[SIPForum-discussion] Difference between DIALOG, SESSION and TRANSACTION

[Ashish Umrani]

Andy,

Proxy is not a required element in SIP communication.  I can have a sip
client talk to another sip client directly, and their your analogy will
fail.

I agree that with proxy in between you are correct.
Ashish


On 8/17/07, Andy Chen <andy.chen.zhen at gmail.com> wrote:
>
> Hi all,
>
> Transaction: between UAC and Proxy, Proxy and UAS
> Dialog: between UAC and UAS
>           UAC: Send INVITE and Receive 18X early dialog
>           UAC Receive 200 confirmed dialog
> Session: after UAS Receive ACK(200) between UAC and UAS, the session
> is established.
>
> Andy
>
> 2007/8/17, Lokesh Agrawal <lokesh.agrawal at gmail.com>:
> > Hi All,
> >
> > Can Any one tell me difference between DIALOG, SESSION and TRANSACTION.
> > Please tell in detail with an example.
> >
> >
> > Thanks and Regards
> > Lokesh Agrawal
> >
> >
> >
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