> On 13 Jul 2021, at 10:10, Christer Holmberg > <[email protected]> wrote: > > Hi Olle, > > When you say “does not support Outbound”, are you referring to the whole > mechanism, or to the specific > reuse-of-registration-connection-for-incoming-calls part?
We have had a lot of discussions about this in the past, where I focused on the latter. In the current set of standards a server is not allowed to reuse the incoming TLS connection for outbound requests. Only SIP outbound allows this. That’s why I started a discussion about a “half-outbound” - much like the use of Outbound in SIP over WebSockets today. Here’s some notes and ideas on that from 2016: https://www.slideshare.net/oej/sip-half-outbound-random-notes <https://www.slideshare.net/oej/sip-half-outbound-random-notes> /O > > Regards, > > Christer > > Get Outlook for iOS <https://aka.ms/o0ukef> > From: stir <[email protected]> on behalf of Olle E. Johansson > <[email protected]> > Sent: Tuesday, July 13, 2021 9:32:56 AM > To: Roman Shpount <[email protected]> > Cc: [email protected] <[email protected]>; Mary Barnes <[email protected]>; > Salz, Rich <[email protected]>; [email protected] <[email protected]> > Subject: Re: [stir] [Acme] NYTimes.com: How Do You Stop Robocalls? > > > >> 13 juli 2021 kl. 06:58 skrev Roman Shpount <[email protected] >> <mailto:[email protected]>>: >> >> At the same time, SIP over TLS has many performance and reliability issues >> that would need to be addressed before it is ready for industry-wide >> deployment. > > There’s also a lack of applicable standards for TLS usage, as I’ve pointed > out a few times, but the working group seems to have no energy to fix. SIP > over TLS from the SIP phone side requires implementation of SIP outbound, > which we never successfully tested at any SIPit. I know of a few > implementations now, but haven’t tested them together. > > Made this presentation five years ago > https://www.slideshare.net/oej/sip-tls-security-in-a-peer-to-peer-world > <https://www.slideshare.net/oej/sip-tls-security-in-a-peer-to-peer-world> > > /O > _______________________________________________ > stir mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/stir
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