Gateway device, communication terminal, wireless system, and relay method
AssigneeIcom Incorporated
InventorHiroshi KAWASAKI
Life of this patent
Estimating the term…
Abstract
A gateway device (30) relays voice communication between a communication terminal to be connected to a closed network (10) and a communication terminal to be connected to a LAN (20). The gateway device (30) includes a closed network communicator (31) connected to the closed network (10), a communication relay (32) to perform encapsulation or decapsulation of data for enabling voice communication between the closed network (10) and the LAN (20), and a LAN communicator (33) connected to the LAN (20).
Claims20
A gateway device for relaying voice communication between a communication terminal to be connected to a closed network on a public line and a communication terminal to be connected to a local area network, the gateway device comprising:
- a closed network communicator connected to the closed network and configured to perform transmission and reception of closed network data conforming to a communication standard of the closed network;
- a LAN communicator connected to the local area network and configured to perform transmission and reception of LAN data conforming to a communication standard of the local area network;
- and
- a communication relay to generate the closed network data by performing encapsulation by adding a header for communication in the closed network to the LAN data received by the LAN communicator and generate the LAN data by performing decapsulation by removing a header for communication in the closed network from the closed network data received by the closed network communicator, wherein
- the closed network communicator transmits the closed network data generated by the communication relay to the closed network, and
- the LAN communicator transmits the LAN data generated by the communication relay to the local area network.
4-8. (canceled)
A communication terminal connectable to a closed network on a public line and configured to communicate with a communication terminal to be connected to the closed network or a communication terminal to be connected to a local area network that is connected to the closed network via a gateway device, the communication terminal comprising:
- a terminal-side communicator connected to the closed network and configured to perform transmission and reception of closed network data conforming to a communication standard of the closed network;
- a data generator to generate LAN data conforming to a communication standard of the local area network, based on data for transmission and generate the closed network data by performing encapsulation by adding a header for communication in the closed network to the LAN data;
- and
- a data extractor to generate the LAN data by performing decapsulation by removing a header for communication in the closed network from the closed network data received by the terminal-side communicator and extract received data from the LAN data,
- wherein the terminal-side communicator transmits the closed network data generated by the data generator to the closed network.
A relay method performed by a wireless system including:
- a closed network-side communication terminal that is a communication terminal to be connected to a closed network on a public line;
- a LAN-side communication terminal that is a communication terminal to be connected to a local area network;
- a gateway device to relay voice communication between the closed network-side communication terminal and the LAN-side communication terminal;
- a closed network-side control server to perform communication control in the closed network;
- and
- a LAN-side control server to perform communication control in the local area network,
- the relay method comprising:
- by the closed network-side communication terminal, when the closed network-side communication terminal is started, acquiring network information for performing communication with the LAN-side control server from the closed network-side control server;
- by the closed network-side control server, performing communication control in the closed network;
- by the LAN-side control server, performing communication control in the local area network;
- by the gateway device, receiving LAN data conforming to a communication standard of the local area network from the local area network, generating closed network data conforming to a communication standard of the closed network by performing encapsulation by adding a header for communication in the closed network to the received LAN data, and transmitting the generated closed network data to the closed network;
- and
- by the gateway device, receiving the closed network data from the closed network, generating the LAN data by performing decapsulation by removing a header for communication in the closed network from the received closed network data, and transmitting the generated LAN data to the local area network.
Dependencies are inferred from the claim text.