[SIPForum-techwg] Question re Application Server

[Chris Sibley]

Comments inline below..

Thanks,

--Chris

> -----Original Message-----
> From: techwg-bounces at sipforum.org [mailto:techwg-bounces at sipforum.org]
On
> Behalf Of Paul Kyzivat
> Sent: Thursday, September 07, 2006 8:55 AM
> To: Klaus Darilion
> Cc: SIP Forum Tech WG
> Subject: Re: [SIPForum-techwg] Question re Application Server
> 
> 
> 
> Klaus Darilion wrote:
> 
> >> After I studied the wording of the document more carefully, I
realize
> >> that its scope is carefully limited to Enterprise-PSTN
interconnect.
> >> With that limited scope, there never would be any direct routing
from
> >> Acme to Bozo.
> >
> > What about a "real direct routing" - Acme to Bozo without routing
via a
> > service provider? IMO that should happen.
> 
> That assumes that Acme knows the request should go to Bozo. But this
may
>   not be information that is available to Acme. For instance, it may
be
> that both Acme and Bozo are customers of the same SP, and that SP
keeps
> that information to itself. Or even if it isn't a secret, its one more
> service that Acme might like to outsource to the SP. It might be
> different if there were widespread availability of public ENUM.
> 

If Acme has some means available (e.g. ENUM, static configuration, etc.)
to route calls directly to Bozo, then I see no reason why it can't (or
shouldn't) do so without involving the SP. I would, however, consider
that to be out-of-scope for our specification. That said, I do think
that that the SP should be able to handle calls between two
Enterprises..

> This area seems to strongly overlap with Speermint. I guess it really
is
> out of scope of SIPConnect, at least for now.
> 
> 	Paul
> 
> > regards
> > klaus
> >
> >>
> >> Conceptually, calls from Acme to Bozo would go via a pair of
> >> application servers connected by a PSTN link. If you collapse that
to
> >> IP routing following these rules, you then need the B2BUA to do the
> >> readdressing that the SGWs otherwise do.
> >>
> >> But realistically doing this without going to the PSTN, and without
a
> >> B2BUA, is going to be valuable. IMO the kind of usage I'm showing
> >> above, while out of scope for the current document, can be viewed
as a
> >> backward compatible extension to the current document.
> >>
> >>     Paul
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> >
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