Hi,
could anybody please answer my queries??

Thanks 
varun

--- varun <[EMAIL PROTECTED]> wrote:

> Hi,
> I have some basic doubts:
> 1> Lets say user A calls B and there is a proxy in
> between.So the proxy looks at user part of Request
> URI
> or at the TO field in Invite request to forward the
> call. Both ReqURI and To field in this case would be
> same.
> 2> When is a tel URI used?
> 
> 3> When is DNS look up used in Sip call?
> 
> Please reply.
> 
> Thanks
> varun
> 
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