Yeah good point - it is what I would include under number translation I guess. Providers do it too in a way, when they remove internal routing prefix codes or "*" codes, fwiw.
-hadriel > -----Original Message----- > From: Jonathan Rosenberg [mailto:[EMAIL PROTECTED] > Sent: Monday, February 25, 2008 9:17 PM > To: Hadriel Kaplan > Cc: IETF SIP List > Subject: Re: [Sip] New I-D on why From/To-URIs are changed at provider > borders > > Thanks for putting this together. > > I'll add another to your list. This is more of an enterprise thing, but > oftentimes the From URI is changed because the caller identity needs to > be set to the attendant number before going to another domain. For > example, if anyone within example.com makes a call, and that call > remains within example.com, the caller ID is unchanged. But if the > request exits the domain, the display name is often changed (Example > Org.) and the number is changed to the direct number for example.com. I > personally think this practice is an artifact of days long gone but it > remains common. > > -Jonathan R. > > Hadriel Kaplan wrote: > > As part of an off-line discussion regarding Kai Fischer's draft on e2e- > security-media and whether his From-URI copying tactic would succeed or > not at a policy level, if rfc4474 fails to do so, I gave my 2 cents on > what some providers had been telling me. Dan asked me to write up a draft > on it, in case people are interested. This is the draft: > > http://www.ietf.org/internet-drafts/draft-kaplan-sip-uris-change-00.txt > > > > -hadriel > > > > _______________________________________________ > > Sip mailing list http://www.ietf.org/mailman/listinfo/sip > > This list is for NEW development of the core SIP Protocol > > Use [EMAIL PROTECTED] for questions on current sip > > Use [EMAIL PROTECTED] for new developments on the application of sip > > > > -- > Jonathan D. Rosenberg, Ph.D. 499 Thornall St. > Cisco Fellow Edison, NJ 08837 > Cisco, Voice Technology Group > [EMAIL PROTECTED] > http://www.jdrosen.net PHONE: (408) 902-3084 > http://www.cisco.com _______________________________________________ Sip mailing list http://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
