[SIPForum-discussion] Via field

[Niketa Pal]

Hi All,
I guess Kiran is talking about the port value in Via header and Tarun is
asking about rport parameter in Via field.
The address/Uri contained in Via header indicates IP and port value which is
used to send response.
While rport is a parameter which is used in case UA is behind NAT. There are
many types of NAT - symmetric, asymmetric, etc.

Regards,

Niketa

On Dec 27, 2007 4:32 PM, Chowdhry,Tarun <tchowdhry at ipolicynetworks.com>
wrote:

>  Hi,
>
> Does that mean the port specified is the one on which the response will
> come? What are asymmetric and symmetric connections?
>
> Also since the port information is not mandatory in the Via field, so what
> will happen suppose I don't specific the port?
>
>
>
>
>
> Kind Regards,
>
> Tarun
>
>
>  ------------------------------
>
> *From:* kiran chakkilam [mailto:qt.kiran at gmail.com]
> *Sent:* Thursday, December 27, 2007 3:22 PM
> *To:* Chowdhry,Tarun
> *Subject:* Re: [SIPForum-discussion] Via field
>
>
>
> Tarun,
>
>
>
> The Port value used to send the response back to the same port ..
>
>
>
>
>
> Regards
>
> ch.kiran
>
>
>
> On 12/27/07, *Chowdhry,Tarun* <tchowdhry at ipolicynetworks.com> wrote:
>
> Hi,
> Can anyone explain me the usage of the port value present in the Via
> field of the SIP message
>
>
> Regards,
> Tarun
>
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