[SIPForum-discussion] Need clarity over Dialog and session in sip.

[vijay kant gupta]

Session is a collection of Dialogue

A dialogue can be identify by from tag to tag and call-id. by these three
parameter . with the help of call-id

So for example inv-200ok and ACk

is one dial.
and bye 200 ok is one dialouge.


in both case  call_id has to be unique other wise how he cleared the call.


Regards
Vijay Kant gupta

On Mon, Jun 14, 2010 at 9:36 PM, Santosh Kumar <mail4santoshkb at yahoo.com>wrote:

> Hi all,
>
>   Can anyone kindly clarify what's session and dialog?
>   Did try refering rfc, but that defination was'nt able to digest.
>
>   Have read,
>    session is something to do with media, while dialog is to do with
> signaling.
>
>   Is it true both session and dialog gets established by INVITE and
> terminate with BYE?
>   , in that case what makes unique between each?
>
>  ,Also have read dialog is identified by callid , tag.
>    then how is session is identified?
>
>  Need your help or links for understanding,
>
>  Thanks
> Santosh
>
>
>
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