Thanks Brett.

Cheers,
Aman


On Tue, Sep 10, 2013 at 7:40 PM, Brett Tate <br...@broadsoft.com> wrote:

> > UAC is not identifying the "100 Trying", "180 Ringing"
> > and "200 OK" received from the terminating side and
> > keep retransmitting the "INVITE" to the terminating
> > side because UAS has changed the B-Number in the "100
> > Trying", "180 Ringing" and "200 OK".
> >
> > Is this a correct behavior?
>
> The UAS (or proxy) is non compliantly altering the To URI.  RFC 4916 does
> provide a mechanism to allow URI changes; however it doesn't apply to
> responses and has other restrictions.
>
> It is a non compliant abnormal situation; thus the UAC can basically
> however it wants.
>
> > I'm unable to see the ideal behavior in the RFC for
> > this scenario, I believe instead of ignoring the
> > incoming 100, 180 & 200 received from terminating
> > side, UAC should generate a valid response to these
> > incoming messages.
>
> The UAS "should generate a valid response".  The UAC can basically act
> however it wants.
>
>
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