System and method for providing packet communication service
First Claim
1. A system for providing a packet communication service, wherein at least one Internet protocol (IP) terminal is connected to a public network through a private network which is different from other private networks, the system comprising:
- a switching server for transmitting a call request message while managing at least one of address information and port information of each said at least one IP terminal;
a second IP terminal for receiving the call request message from the switching server, and for setting up at least one of destination information as first address information and first port information of the first IP terminal included in the call request message as destination information, for transmitting to the first IP terminal a first message including at least one of second address information and second port information set up in advance, for setting up destination information of the packet as said at least one of the first address information and the first port information, and for transmitting a packet; and
a first IP terminal for transmitting the call request message to the switching server through said at least one of the first address information and the first port information, for setting up the destination information of the packet as the second address information included in at least one of a first message and second port information included in the first message, and for transmitting the destination information.
1 Assignment
0 Petitions
Accused Products
Abstract
In a system and method for providing a packet communication service in a network system, a plurality of private networks are connected to one another through a public network. When a voice call is established between Internet protocol (IP) terminals included in respectively different private networks, packets can be directly exchanged between the IP terminals using public address information and port information of the IP terminals so that packet transmission delay can be minimized and network resources can be used efficiently.
42 Citations
20 Claims
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1. A system for providing a packet communication service, wherein at least one Internet protocol (IP) terminal is connected to a public network through a private network which is different from other private networks, the system comprising:
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a switching server for transmitting a call request message while managing at least one of address information and port information of each said at least one IP terminal;
a second IP terminal for receiving the call request message from the switching server, and for setting up at least one of destination information as first address information and first port information of the first IP terminal included in the call request message as destination information, for transmitting to the first IP terminal a first message including at least one of second address information and second port information set up in advance, for setting up destination information of the packet as said at least one of the first address information and the first port information, and for transmitting a packet; and
a first IP terminal for transmitting the call request message to the switching server through said at least one of the first address information and the first port information, for setting up the destination information of the packet as the second address information included in at least one of a first message and second port information included in the first message, and for transmitting the destination information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An Internet protocol (IP) terminal connected to a network through a private network, comprising:
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a memory for storing public address information assigned from the network, information on at least one public port exchanging packets, and at least one of public address information and information on at least one public port of another IP terminal recognized through a message received from said another IP terminal;
a message generator for generating a plurality of test messages based on said at least one public address information and the port information stored in the memory, a call request message based on a selection by a user, and a response message for storing at least one of public address information and port information recognized from an information transmission message received from said another IP terminal in the memory, and for setting up at least one of recognized public address information and port information of said another IP terminal as destination information when connected to the network; and
a packet processor for transmitting each message generated in the message generator to the network, for setting up the destination information of a voice packet generated based on at least one of a voice signal and a video packet generated based on a video signal as said at least one of recognized public address information and port information of said another IP terminal, and for transmitting the set information by means of the port information stored in the memory.
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14. A method of providing a service in a packet communication service provision system which includes at least one Internet protocol (IP) terminal connected to a public network through a private network, private networks being different from one another, and through a switching server, said method comprising the steps of:
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managing, at the switching server, at least one of address information and port information of each said at least one of IP terminal using an information table;
when a call request message is received from a first IP terminal, transmitting the call request message from the switching server to a second IP terminal, the call request message including said at least one of address information and port information of the first IP terminal obtained from the information table;
setting up, at the second IP terminal, said at least one of address information and port information of the first IP terminal which is recognized from the call request message as destination information, and transmitting a first message in which said at least one of address information and port information set up in advance is set up as source information for the first IP terminal; and
transmitting, at the first IP terminal, packets using said at least one of address information and port information of the second IP terminal recognized in the first message, and allowing the second IP terminal to transmit packets using said at least one of recognized address information and port information of the first IP terminal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification