On Thu, Feb 25, 2010 at 7:35 PM, Aaron Clauson <[email protected]> wrote: >> -----Original Message----- >> From: [email protected] [mailto:sip- >> [email protected]] On Behalf Of Charles Shen >> Sent: Thursday, 25 February 2010 11:04 PM >> > >> Does anyone have a good idea about how widely SIP-over-TCP and SIP- >> over-TLS >> is used, compared to SIP-over-UDP, in the real world? >> > > (oops, meant this for the list) > > When I implemented SIP over TLS and asked my users (I run a SIP aggregator > service with over 1000 different SIP providers being used) if any knew of a > SIP provider that supported sips and I didn't get a single response.
It is important to note that "sips" is NOT the same thing as sip over TLS transport. sips would be hard to support. > > I found one eventually, snom.com, but I think it's fairly safe bet to say > there are not too many public SIP services that support TLS, TCP support is > also fairly low, at a guess maybe 10 or 20%. I've never come across one that > doesn't support UDP. > > One reason TLS and TCP are not as popular on high volume public services is > the connections take significantly more resources to maintain compared to > UDP. Lack of TCP support is surprising. Practically every device supports a TCP stack. > > Aaron > > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- M. Ranganathan _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
