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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