Title: WebRTC: APIs and RTCWEB Protocols of the HTML5 Real-Time Web, Third Edition, Author: Alan B. Johnston
Title: Sip: Understanding the Session Initiation Protocol, Third Edition / Edition 3, Author: Alan B. Johnston
Title: Understanding Voice Over Ip Security, Author: Alan B. Johnston
Title: Internet Communications Using SIP: Delivering VoIP and Multimedia Services with Session Initiation Protocol, Author: Henry Sinnreich
Title: SIP: Understanding the Session Initiation Protocol, Fourth Edition / Edition 4, Author: Alan B. Johnston