[SIPForum-discussion] How to know whether anonymous INVITE is recieved from B2BUA user or other external user

[Vivek Batra]

Any idea about the same??

On 3/6/09, Vivek Batra <Vivek.Batra at matrixtelesol.com> wrote:
> Hi,
> In B2BUA, if anonymous INVITE is recieved from one of the registered user,
> how B2BUA can become to know whether INVITE is recieved from its user or
> some other external user.
> To elaborate, let us taken an example:
>
> *	User alice at abc.com is registered with B2BUA (abc.com).
> *	B2BUA itself is registered with some other domain let say xyz.com.
> *	B2BUA can recieve the INVITE from:
>
> *	It's registered user viz Alice or other one.
> *	External users (xyz.com) which are not registered with B2BUA instead
> B2BUA is registered with doamin xyz.com
>
> *	B2BUA applies different call routing mechanims in both the cases viz
> when INVITE is recieved from its registered users or when INVITE is recieved
> from exteranl users. E.g., B2BUA doesn't authenticate the INVITE recieved
> from exteranl user while may/ may not authenticate the INVITE recieved from
> its registered user.
> *	Now if Alice sends the anonymous INVITE to B2BUA, how B2BUA become
> to know whether INVITE is recieved from Alice or some other user. B2BUA
> needs to know this since call routing mechanim for each system user is
> different. For E.g., Class of Serive, Time-Zone etc (from IPPBX point of
> view).
>
> Best Regards,
> Vivek Batra
>