Patent ID: 8416274
Filing Date: 2013-04-09
Classification: H04L,H04M

Abstract:
1. A voice/video communication system comprising: a caller having a first PSTN subsystem and a first data subsystem; a callee; and a STUN server, wherein the first data subsystem sends a request to the STUN server to find out the callers' public IP address/port; wherein the caller sends a request for a PSTN call to the callee, and the callee accepts the request, then the caller sends a request for a video conference to the callee, and the callee accepts the request; the first data subsystem encodes the caller's public IP address/port into a first key sequence and triggers the first PSTN system to send first audio coding representing the first key sequence to the callee; and the caller sends a request for video data communication to the callee, and the callee accepts the request.