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I agree with the people that have said this debate is farcical. Cellular carriers can and do market their 3G services as
wireless broadband. In a number of cases, and I can’t believe that it is
only here, services provide open Internet connectivity allowing access to
independent voice service providers (not IMS). When these services are sold in
this manner, they are still cellular, but the carrier is really just an ISP and
the ECRIT model for emergency calling is as applicable to them as it is for any
DSL ISP. Any specific “cellular” emergency call procedures are not
invoked, the carrier by the very nature of the service they are selling has
broken the access-to-voice-service link. This makes the ECRIT architecture applicable.
The result is that no applicability statement is required in
the ECRIT documents. Indeed, unless specific statements in the 3GPP
specifications are made to say that open Internet services SHALL NOT be
provided through these technologies I can’t see how ECRIT is not
applicable to cellular. I can’t see 3GPP adding such a statement, and I
think that their primary customers would go up in arms if they did. I propose
that the applicability statement resolution be dropped unless the proponents of
these applicability statements can stand up and say that open Internet services
over 3GPP networks don’t happen now and will not happen in the future or
they can point us to a 3GPP specification that describes how a totally
decoupled access and voice service can deliver an emergency call to the correct
PSAP. Cheers James
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