Uninterrupted IP transmission during end point changes, which defines the mechanisms, which ensure calls can be handed over between wireless cells of a single technology network or between cells of different technology networks. It is the fundamental technique, which provided Wi-Fi hotspots recognize a user, facilitates mobility on a Wi-Fi Network or for that matter any packet based wireless network. http://www.voip-pal.com/Whitepaper_Virtual_Technology.pdf
Dr. Thomas Sawyer, Chairman and CEO of Voip-Pal stated, “VoIP systems will ultimately provide the world’s voice services using the Internet. With the issuance of all five patents in our portfolio, Voip-Pal is positioned to offer the patented technology to provide worldwide voice services using the Internet while operating seamlessly in conjunction with the installed Legacy Network. Voip-Pal’s patented technology offers functionality that includes: Universal numbering; Network value as defined by Metcalfe; regulatory compliance when delivering and receiving calls in regulated networks; uninterrupted VoIP calls to and from Fixed, Mobile, and WiFi networks; Gateway systems for interconnecting VoIP networks to Mobile and Fixed Networks transporting OTT VoIP services; and the imperative of interconnect, termination, and recompense for delivery of calls by other networks.” Uninterrupted Transmission technology patent 8,675,566.