It's not clear to me exactly what you're suggesting here.
- If the DNS you're referring to is private then no concerns.
- If the DNS is publicly accessible then are you saying that in the DNS the E.164 number only has a domain name corresponding to it without a username e.g. 12345678909 -> sip:bigtelco.com ? This would be an incomplete URI and would need some other mechanism to provide call routing to a specific user, perhaps a full ENUM DNS which is only accessible by Operators. This "two tier" system would get rid of most of the privacy concerns but with the downside of some duplication of material. Could be a solution worthy of further study.
- If the DNS is publicly accessible with the URI in usual format e.g. 12345678909 -> sip:jdoe at bigtelco.com then we are back to the same situation already described: anyone can "war dial" the DNS and build up a list of SIP URIs of subscribers which is effectively a publicly accessible phone book without "opt out".
Kim.
-----Original Message-----
From: Mike Hammer [mailto:mhammer at cisco.com]
Sent: 22 June 2004 20:38
To: Jeff Williams
Cc: enum at ietf.org; Stastny Richard
Subject: Re: AW: ENUM Privacy (was RE: [Enum] User ENUM vs Operator ENUM)
<Original note edited>
I would argue that for any E.164 number in the form of a domain name that
is found within the DNS, if the resulting records point simply to
information of a service or a service provider address that does not
provide more information specific to an individual subscriber, then no
privacy violation has occurred. Any messages sent to that address, be they
http, email, im, sip, h323, or whatever can then be handled on their own
terms. Routing happens.
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