Re: [dispatch] New Version Notification for draft-gundavelli-dispatch-e911-wifi-00.txt

worley@ariadne.com Fri, 31 March 2023 16:01 UTC

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To: "Sri Gundavelli (sgundave)" <sgundave=40cisco.com@dmarc.ietf.org>
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Subject: Re: [dispatch] New Version Notification for draft-gundavelli-dispatch-e911-wifi-00.txt
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"Sri Gundavelli \(sgundave\)" <sgundave=40cisco.com@dmarc.ietf.org>
writes:
> Thanks a lot for reviewing the document. I agree, the document should
> provide the larger emergency calling context. The current art, the
> elements in the system, interfaces with the PSAPs and other touch
> points. We are familiar with the prior efforts in IETF and also
> standards bodies including 3GPP and around ATIS reports. Perhaps a
> discussion on how NG911/NG211 emergency service network are deployed
> will be useful. The document requires more work, and this is just a
> starting point. 

I am by no means an expert on emergency calling.  But two generic points
come to mind.

One is to establish connection with the people working in the area.
More subtly, make sure you've absorbed the terminology that they use, to
signal to them that your work is to be taken seriously.  In this
instance, the common emergency number in the EU is 112 (not 211).  (And
the GSM standard requires that calls dialed as 112 be forwarded to the
local emergency number, even if it isn't 112.)

Another is to establish that there is implementor interest.  There's no
point trying to perfect technology for which there is no market.
Emergency communications is an unusual situation *for the IETF* in that
it is inherently entwined with government structures, those that operate
it.  There are only a few hundred *possible* customers for this
technology.  So early in the process, you should discern that the
relevant operators would like to see the ability to carry emergency
calls over WiFi.  Or more subtly, to discern what features such an
emergency call system would need to be able to convince the operators to
be interested in it.

Dale