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TCP/TLS usage


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how many TCP/TLS connections are considered the limit?

 

It would be nice if I could configure PNP parameters like this on a domain by domain basis, so I can force a company to use UDP.

 

On flaky networks, TCP connections seem to cause de-registrations a lot more noticeable than UDP.

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how many TCP/TLS connections are considered the limit?

 

It would be nice if I could configure PNP parameters like this on a domain by domain basis, so I can force a company to use UDP.

 

On flaky networks, TCP connections seem to cause de-registrations a lot more noticeable than UDP.

 

UDP is evil. Imagine the "web" or email would have been built on UDP. UDP requires message repetition, there are many extremly buggy NAT implementations out there when it comes to UDP (fragmentation, ops). If you would ask the inventors of SIP if they would propose UDP transport layer again they would say "shoot me" (maybe not in an official statement).

 

The PBX allocates one thread per TCP/TLS connection. The good news is that today that is no problem for an operating system. Check out web and email servers if you want to know how stable that can be.

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Yea I understand. I just had a a scenario where I put 50 polycom phones on a box that PNP provisions TCP mainly because of presence.

 

About twice per day the phone would de-register. I am certain they have internal network issues.

We changed the PNP (system wide unfortunately) to UDP and they have not had problems.. I realize UDP probably just hid the problem.

 

Which is why i asked if there was some sort of magical TCP limit.

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