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I have registered, configured and entered in the credentials (MyPBX) to Zoiper. It's not working. I have selected SIP. When I try to make a test call, it gives SIP 500: Service unavailable. What else do I need to do? What are the codecs?


in Windows by (120 points)

1 Answer

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Error SIP 500 is returned from the server. It is best to contact your VoIP provider for more details on that matter.

by (18.4k points)
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