Terminal-to-terminal communication connection control method using IP transfer network

• US 7,948,995 B2
• Filed: 08/08/2007
• Issued: 05/24/2011
• Est. Priority Date: 04/06/2000
• Status: Expired due to Fees

• Current Assignee: The Distribution Systems Research Institute (GS1 AISBL)
• Original Assignee: The Distribution Systems Research Institute (GS1 AISBL), Miyaguchi Research Co., Ltd.
• Inventors: Furukawa, Hisao, Miyaguchi, Shoji
• Primary Examiner(s): LEVITAN, DMITRY
• Application Number:
  US11/891,285
• Publication Number:
  US 20080056257A1
• Time in Patent Office: 1,385 Days
• Field of Search: 370229-232, 370/235, 370351-356, 370/389, 370/390, 370/400, 370/401, 709230-233, 709/249
• US Class Current: 370/400
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 2101/668 Internet protocol [IP] address subnets
• CPC Class Codes: H04L 61/2514 between local and global IP addresses
• CPC Class Codes: H04L 61/2517 using port numbers
• CPC Class Codes: H04L 61/2535 Multiple local networks, e.g. resolving potential IP address conflicts
• CPC Class Codes: H04L 61/255 Maintenance or indexing of mapping tables
• CPC Class Codes: H04L 61/2564 for a higher-layer protocol, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 61/4511 using domain name system [DNS]
• CPC Class Codes: H04L 61/4557 Directories for hybrid networks, e.g. including telephone numbers
• CPC Class Codes: H04L 63/0236 Filtering by address, protocol, port number or service, e.g. IP-address or URL
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

Both a connection server and a relay connection server are installed in an IP transfer network; a function similar to a line connection control of a subscriber exchanger is applied to a connection server; a function similar to a line connection control of a relay exchanger is applied to the relay connection server; and a terminal-to-terminal communication connection control method with using the IP transfer network is realized in such a manner that a telephone set and a terminal such as an IP terminal and a video terminal transmit/receive an initial address message, an address completion message, a call pass message, a response message, a release message and a release completion message, which can be made in a 1-to-1 correspondence relationship with line connection control messages of the common line signal system. Furthermore, while an address administration table is set to a network node apparatus of an IP transfer network, means for registering addresses of the terminals into this address administration table is employed, so that an IP packet communication by a multicast manner can be realized with improving information security performance.

Claims

1. A communication system with an IP transfer network, wherein said IP transfer network includes plural network node apparatuses, a terminal T1 is connected to a network node apparatus N1 by a logical terminal LP1 via a communication line L1, and a terminal T2 is connected to a network node apparatus N2 by a logical terminal LP2 via a communication line L2,

said network node apparatus N1 has an address management table H1 being capable of writing and erasing a record, and said network node apparatus N2 has an address management table H2 being capable of writing and erasing a record,

a request to communicate with said terminal T2 and a telephone number or host name TN2 of said terminal T2 are sent from said terminal T1 to said network node apparatus N1, and based on said request said network node apparatus N2 sends a receiving notification based on said request to said terminal T2,

a call-on notification to notify a response preparation starting, is sent from said terminal T2 to said network node apparatus N2,

a response notification is sent from terminal T2 to said network node apparatus N2,

said network node apparatus N1 writes a record R1 in said address management table H1, and said network node apparatus N2 writes a record R2 in said address management table H2,

said record R1 includes an address to discriminate said logical terminal LP2, and said record R2 includes an address to discriminate said logical terminal LP1,

a communication path P12 in which an internal packet is transferred is defined between said logical terminals LP1 and LP2,

an external IP packet GP1 of which destination address is an external IP address EA2 of said terminal T2 is sent from said terminal T1, then said external IP packet GP1 is inputted to said network node apparatus N1 via said logical terminal LP1, said external IP packet GP1 is converted into an internal packet NP1 based on said record R1, and said internal packet NP1 includes said external IP packet GP1,

said internal packet NP1 is transferred in said communication path P12, and said external IP packet GP1 restored at said network node apparatus N2 is sent to said terminal T2 via said logical terminal LP2, and

an external IP packet GP2 includes a communication cut-off request and is sent from said terminal T1 or T2, causing said network node apparatuses N1 and N2 to erase said records R1 and R2, and then said communication path P12 is erased.

2. A communication system with an IP transfer network, wherein said IP transfer network includes plural network node apparatuses, each of of said apparatuses has an address management table being capable of writing and erasing a record,

a terminal T1 is connected to a network node apparatus N1 by a logical terminal LP1 via a communication line Ll, and a terminal T2 is connected to a network node apparatus N2 by a logical terminal LP2 via a communication line L2,

said network node apparatus N1 has an address management table H1, and said network node apparatus N2 has an address management table H2,

a request to communicate with said terminal T2 and a telephone number or host name TN2 of said terminal T2 are sent from said terminal T1 to said network node apparatus N1,

said network node apparatus N1 writes a record R1 which includes an address to discriminate said logical terminal LP2, in said address management table H1, and said network node apparatus N2 writes a record R2 which includes an address to discriminate said logical terminal LP1, in said address management table H2,

a communication path P12 in which an internal packet is transferred is defined between said logical terminals LP1 and LP2,

an external IP packet GP1 of which destination address is an external IP address EA2 of said terminal T2 is sent from said terminal T1, then said external IP packet GP1 is inputted to said network node apparatus N1 via said logical terminal LP1,

said external IP packet GP1 is converted into an internal packet NP1, which includes said external IP packet GP1, based on said record R1,

said internal packet NP1 is transferred in said communication path P12, and said external IP packet GP1 restored at said network node apparatus N2 is sent to said terminal T2 via said logical terminal LP2, and

an external IP packet GP2 including a communication cut-off request is sent from said terminal T1 or T2, then said network node apparatuses N1 and N2 erase said records R1 and R2, and then said communication path P12 is erased.