Multimedia conference system and method which enables communication between private network and internet
First Claim
1. A multimedia conference system that enables direct communication between private network and the Internet, including:
- a plurality of user agents (to receive call requests) positioned in the private network;
a calling SIP terminal positioned in a public network;
a network address translation (NAT) positioned on the gate of the local network as barrier between the calling terminal and the user agent;
a SIP Proxy Server positioned between the calling terminal and private network and logically installed in parallel with said NAT to receive session initiation protocol messages transmitted from the calling terminal, connect, and transmit IP addresses without going through said NAT and without using a path-coupled signaling protocol to establish a direct connection with the user agents, so as to send the message to specific User Agent(s), said SIP Proxy Sewer has a Network Interface directly connected to a public network and a Network Interface directly connected to the private network.
1 Assignment
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Accused Products
Abstract
The present invention discloses a multimedia conference system and method that enables peer-to-peer communication between private network and the Internet. The multimedia conference system and method that enables direct peer-to-peer communication between private network and the Internet includes: a plurality of user agents (to receive call requests) constituting a local network; a calling terminal positioned outside the local network and connected to the local network via Internet; a network address translation (NAT) positioned on the gate of the local network as barrier between the calling terminal and the user agent, and a SIP Proxy Server positioned between the calling terminal and private network and logically installed in parallel with said NAT to receive session initiation protocol messages transmitted from the calling terminal, connect, and transmit IP addresses, so as to send the message to specific User Agent(s).
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Citations
30 Claims
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1. A multimedia conference system that enables direct communication between private network and the Internet, including:
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a plurality of user agents (to receive call requests) positioned in the private network; a calling SIP terminal positioned in a public network; a network address translation (NAT) positioned on the gate of the local network as barrier between the calling terminal and the user agent; a SIP Proxy Server positioned between the calling terminal and private network and logically installed in parallel with said NAT to receive session initiation protocol messages transmitted from the calling terminal, connect, and transmit IP addresses without going through said NAT and without using a path-coupled signaling protocol to establish a direct connection with the user agents, so as to send the message to specific User Agent(s), said SIP Proxy Sewer has a Network Interface directly connected to a public network and a Network Interface directly connected to the private network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A multimedia conference system that enables direct communication between private network and Internet, including:
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a plurality of user agents to constitute a local network; a proxy server connected to the user agents via the local network, performing as the interface to public network to receive session initiation protocol messages transmitted from the user agents, connect, and transmit IP addresses without going through said NAT and without using a path-coupled signaling protocol to establish a direct connection with the user agents, said proxy server has a Network Interface directly connected to a public network and a Network Interface directly connected to the private public network; a network translation (NAT) positioned between e called terminal and the local network and logically deployed in parallel with the proxy server. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for multimedia conference that enables direct communication between private network and public network, including:
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(1) Deploying a Proxy Server logically in parallel with NAT, to receive incoming call request from the calling SIP terminal which connects to the Proxy Server via Internet, validate the request, and record the routing information for the call without going through said NAT and without using a path-coupled signaling protocol to establish a direct connection with specified User Agent, said Proxy Server has a Network Interface directly connected to a public network and a Network Interface directly connected to the private public network; (2) Forwarding the call request to specified User Agent and establishing the call connection; (3) Conducting multimedia conference communication between the calling SIP terminal and specified User Agent in the private network. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A method for multimedia conference that enables direct communication between private network and public network, including:
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(1) Deploying a Proxy Server deployed logically in parallel with a NAT to receive incoming call request originating from the User Agent located inside private network, validate the request, and record the routing information for the call without going through said NAT and without using a path-coupled signaling protocol to establish a direct connection with the User Agent, the Proxy Server has a Network Interface directly connected to a public network and a Network Interface directly connected to the private public network; (2) Performing DNS lookup at the Proxy Server based on the request originating from User Agent and forward the call request to called SIP terminal which is located outside the private network to establish the call connection; and (3) Conducting multimedia conference communication between the calling User Agent and the called SIP terminal. - View Dependent Claims (27, 28, 29, 30)
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Specification