Illegal Call in VOS3000 Server! How to stop Illegal call, is it important?

Hello, Sometime we see illegal calls in vos3000 server CDR as termination reason. Actually illegal calls can be shown for few reason. If your clients ip not added and send calls at your server or you added wrong ip in mapping gateway or any previous users used this ip for voip purpose and his client still sending calls in this ip or some small retail hacker group try to login at your server by…

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