I have many SIP servers, but none of them have an external network. Can I use a server with an external network to proxy many SIP servers without an external network
-
I'm not an expert on this topic, so I can't provide an answer, but I would suggest you look into the concept of a 'Reverse Proxy' for SIP Servers - it seems there's information on this around the web.Ethan McTague– Ethan McTague2021年02月24日 05:05:04 +00:00Commented Feb 24, 2021 at 5:05
2 Answers 2
Yep, you can.
Try using opensips or asterisk as a proxy to redirect calls to nat endpoints. What you’re trying to do is basically how sip providers work
Example: Proxy example
User A is your NAT SIP Servers, Proxy is NAT/External SIP Server and B is PSTN Gateway or PSTN/SIP Provider
In case you have no idea how to get started, here is a useful article, it covers devices but we can consider that devices and servers are endpoints, so the article is for you: Using SIP Devices behind NAT
Comments
This is called a SBC Session-Border-Controller. Have a nice day.