[OpenSIPS-Users] Question about error 500 only via WIFI

Rodrigo Pimenta Carvalho pimenta at inatel.br
Wed May 11 19:10:38 UTC 2022


My SIP proxy is an OpenSIPS version 2.4.7. It was 'off' for a while and today I turned it on again for some tests.

I usually use my home office local WIFI to connect my softphones to the network and it can be all connected (online) to this SIP proxy.

However, if I use the mobile network (LTE/4G) to connect the softphones to the SIP proxy, the OpenSIP returns an error 500. That is: "SIP/2.0 500 Server error occurred (7/TM)".

One of the softphones (Zoiper) allows me to use a kind of "proxy PUSH". If I use it, the problem is solved even while using the mobile network.

What is a proxy PUSH?  Why OpenSIPs return error in a case, but not in the other one?
What could I do to avoid using a 'proxy PUSH'?

Local WIFI and mobile network come from different carriers.

Any hint will be very helpful!

Best regards.

Inatel Competence Center
Ph: +55 35 3471 9200 RAMAL: 979

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