On Wed, 2008-11-12 at 15:02 +0000, Scott Lawrence wrote: > If we're going to support PBX-to-PBX we don't _need_ the ITSP, and we > should not send the call to them in the first place. > > Let's keep our conceptual model clean here: an ITSP is a Gateway to the > PSTN - it is NOT some kind of intermediary between us and any other > SIP-capable system. If by chance we don't know the SIP address and send > to the ITSP, and it sends the call with SIP directly to the target > without actually going through the PSTN, that's fine, but to us it's all > the same.
I can easily imagine ITSPs making a business niche connecting SIP systems, e.g., by providing QoS guarantees. If such an ITSP is transparent, we should surely support it, but I expect that the real world will be plagued by intermediate cases as well. Dale _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev
