11 Dec
2023
11 Dec
'23
9:50 p.m.
:-) Why not just have frequent re-registration intervals?
On 11 Dec 2023, at 13:33, Benoit Panizzon
<benoit.panizzon(a)imp.ch> wrote:
Hi Alex
--
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com
Tel: +1-706-510-6800
Perhaps it is helpful to ask a more basic
question: why are you using server-side keepalives?
Because of a *stupid* cloud hosted PBX vendor solution.
That vendor is hosting his PBX behind a NAT without SIP ALG.
NAT UDP Timeout 90 seconds!
That vendor refused to send any kind of keep-alive from his cloud PBX
instances. Her refuses to increase UDP keep alive. He considers keeping
the UDP session alive to be the task of the 'registrar'.
Apparently, all SIP provider in Switzerland send UDP keep alives once
per minute to all their customers, as we were the only one, where NAT
kept timing out rendering the cloud PBX instance behind NAT unreachable.
So I enabled this to make our 3 customers on that cloud platform happy.
Mit freundlichen Grüssen
-Benoît Panizzon-
--
I m p r o W a r e A G - Leiter Commerce Kunden
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