Integrating WebRTC with PSTN using OpenTok & Nexmo SIP

Integrating WebRTC with PSTN using OpenTok & Nexmo SIP

In this blog we look at how to connect OpenTok Live Video sessions with traditional PSTN phone calls. We will demonstrate how to connect an OpenTok session to PSTN with an audio stream that connects through OpenTok SIP Interconnect to a Nexmo SIP-PSTN Gateway.

OpenTok SIP Interconnect is a general purpose SIP capability that can be used to connect to many different kinds of gateway or other SIP systems. TokBox is now part of Vonage, so in this blog we will use our own Nexmo programmable communications APIs to bridge the call.

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