Thanks Guys for providing me this valuable information. Currently I am not
supporting Referred-By header instead Target-Dialog is being supported. does
this make any change in the message? Obviously there is this header present.

Thanks.
On Wed, Apr 27, 2011 at 5:12 AM, Iñaki Baz Castillo <[email protected]> wrote:

> 2011/4/27 Kevin P. Fleming <[email protected]>:
> >> These two usages terminate *independently* of one another. The
> >> invite-dialog-usage will probably end with a BYE when the transfer
> >> succeeds. But the subscribe-dialog-usage, and hence the dialog, remains
> >> until you terminate it, with the appropriate NOTIFY message.
> >
> > Wouldn't that be a SUBSCRIBE setting the subscription expiration to
> > zero? I wasn't aware that a UAC could send a NOTIFY.
>
> For sure Paul meant that the receiver of the REFER would send a NOTIFY
> with Subscription-Status: terminated. This would end the implicit
> subscription dialog.
>
> --
> Iñaki Baz Castillo
> <[email protected]>
>
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