| 20090049164 | PEER-TO-PEER COMMUNICATION METHOD AND SYSTEM ENABLING CALL AND ARRIVAL - A virtual device driver is installed in a client terminal and a server as software, and also a virtual hub is installed in a server as software. For example, by giving an L2-VPN function to the SIP terminal node itself, and installing the above-mentioned software in the existing server node, it is not necessary to install a special server node, and even when between the clients terminals which communicate use what kind of network environment and a protocol, peer-to-peer communication is enabled general-purpose. | 02-19-2009 |
