[SIPForum-discussion] What is "inside dialog" and "outside dialog"

[Abhisek Acharya]

Forgot to mention that first INVITE message from the calling party to
called party is a classic example of a Request which is outside of the
Dialog.The first INVITE message only contains the From-Tag.SO this is
outside the Dialog.

Regards
Abhisek Acharya

On Tue, Jan 15, 2013 at 9:56 AM, Abhisek Acharya
<abhisek.acharya at gmail.com>wrote:

>
> In order to know this we must know when and how a dialog is established.A
> dialog is established when 18x response to a INVITE message comes from its
> peer.The TO-TAG,FROM-TAG and CALL-ID constitutes the dialog-ID.This state
> is called early dialog and it goes to confirmed state after 200OK response
> comes from UAS.
>
> So any REQUEST after this will be inside the DIALOG..
>
> 2.There are also methods they do not create the dialog like
> OPTION,REGISTER where OPTION and RESGITER will get the 200OK response right
> a way.These requests are outside the dialog.
>
> Please let me know if there is any confusion anywhere in this.
>
> Regards
> Abhisek Acharya
>
>
> On Mon, Jan 14, 2013 at 11:22 AM, Khoa Pham <onmyway133 at gmail.com> wrote:
>
>> When reading SIP, I often encounter these two terminologies. Sometimes
>> they say "Sending request inside dialog", sometimes they say "Sending
>> request outside dialog".
>>
>> So what do they mean ?
>>
>> --
>> Khoa Pham
>> HCMC University of Science
>> Faculty of Information Technology
>>
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