I tried to translate the picture in notepad. I hope, it is received as
intended. Please find below.
A
side
B side
______________
---------------------------------> | B |
Invite |
|-------------------------------> Invite
|
|<------------------------------ 100 Trying
<--------------------------------- | | 18x without contact
header
100 Trying | 2
|<------------------------------
| |
<--------------------------------- | |
18x with contact | |
---------------------------------->| B
|---------------------------------> ????????
BYE | |
18x from B side received without contact header. 18x response has "To tag"
and without Record Route.
Thanks,
kumar
On Mon, Aug 17, 2009 at 11:24 PM, Vikram Chhibber <[email protected]
> wrote:
> We can not see the attachment. A UAC should have no problem processing
> a unreliable 18x response without Contact as it is optional.
> It is definitely needed in a reliable 18x as without it, a UAC can not
> construct a PRACK request. In this case, 18x will timeout and the
> early dialog will be terminated.
> On Wed, Aug 12, 2009 at 3:03 AM, raikkme rrrrr<[email protected]>
> wrote:
> > What should be the behaviour, in case 18X response is received with no
> > Contact header for the below case?
> >
> > Please refer the attached document for sample scenario.
> >
> > The entity is behaving as a B2B, where BYE is received from one side.
> >
> > Thanks,
> > kumar
> >
> > _______________________________________________
> > Sip-implementors mailing list
> > [email protected]
> > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
> >
>
_______________________________________________
Sip-implementors mailing list
[email protected]
https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
