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> It's not that I necessarily believe there will be a lack of SPs. I believe > the mix of SPs and the products they offer will change dramatically at a > pace that PSAPs won't be able to keep up. This week Google, next week > Noggle, the next week Boogle, etc. If in fact the PSAP requires > relationships with every SP that may send an emergency call their way, it > will only stifle innovation. There is a fundamental scaling problem here that can't just be wished away. It doesn't strike me as realistic for PSAPs to maintain a large number of bi-lateral relationships, whether they be with SPs anywhere on earth, enterprise networks operating in their service areas, or local access networks. This isn't a constraint that is created by the choice of security technology (e.g. certificates vs. passwords or pre-shared keys); it's fundamental. The only way to get around this scaling problem is by introducing hierarchy. However, we shouldn't necessarily assume that the hierarchy corresponds to today's notion of a "service provider". |