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?

Regards,

Christer

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________________________________
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

/O
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