Patent ID: 8090366
Filing Date: 2012-01-03
Classification: H04L,H04W

Abstract:
1. A network system for sharing files between at least two communication devices engaged in voice communication, the network system comprising: an IP Multimedia Subsystem for registering the plurality of communication devices, the registering including assigning a unique IP address to each communication device; a SIP-based voice connection between the engaged communication devices over the IP Multimedia Subsystem; a packet-based data connection to share a file between the engaged communication devices over the IP Multimedia Subsystem; and a plurality of gateways between the engaged communication devices and an IP network; wherein the gateways initiate, maintain, and terminate the packet-based data connection while engaged in the SIP-based voice communication, the gateways being configured to initiate the packet-based data connection by transmitting a packet-based data connection request; wherein the request including a request to check parameters of one of the engaged communication devices, and receiving a message of acceptance, the message of acceptance including information about media receiving capabilities of said one of the engaged communication devices; wherein the information about media receiving capabilities including one or more types of media the said one of the engaged communication devices is capable of receiving, the one or more types including video, audio, or pictures; wherein the packet-based data connection and the SIP-based voice connection use a cellular network, and wherein the packet-based data connection uses a Packet Delivery Protocol (PDP).