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The audio cannot be heard because CSipSimple by default advertises the Internet-facing IP address of the phone, not the OpenVPN address. This means the control messages get through (hence one can make calls), but the audio stream is routed out through the Internet and not over the VPN. Change to Expert mode To change this, the CSipSimple account ...


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You can just install any SIP client and dial in the form user@IP to the other party. Both must be SIP ( any app , do not require to be same app ) But most providers allows you to pass IP-to-IP calls for free and also will allow you to dial other non SIP IP phones ( like Gtalk, Cisco Jabber that is offers for free gateway between SIP and XMPP ( i.e. ...



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