Terminal-to-terminal communication connection control method using IP transfer network
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.
1. A communication system, wherein:
said communication system includes a communication network, and said communication network includes plural servers and a domain name server,
a terminal T 1 and a terminal T 2 or a server W are connected to said communication network,
a telephone number or a domain name of said terminal T 2 or said server W is sent from said terminal T 1 ,
a server S 1 receives an IP frame including said telephone number or said domain name,
said domain name server receives said telephone number or said domain name from said server S 1 , and
said domain name server retrieves and replies an IP address of a server S 2 which controls a communication of said terminal T 2 or said server W, to said server S 1 , based on said telephone number or said domain name,
a control of a communication between said terminal T 1 and said terminal T 2 or said server W, is performed via said server S 1 and S 2 discriminating by said IP address, and
said communication between said terminal T 1 and said terminal T 2 or said server W is carried out via said communication network and is not carried out via said server S 2 .
2. A communication system according to claim 1 , wherein:
said terminal T 1 is connected to said communication network via a first wireless communication path, and said terminal T 2 or said server W is connected to said communication network via a second wireless communication path, and
said terminal T 1 communicates with said terminal T 2 or said server W via said first wireless communication path, said communication network and said second wireless communication path.
3. A communication system according to claim 1 , wherein:
said communication network is connected to a public switched telephone network or a mobile communication network, and said terminal T 1 communicates with a terminal T 3 or a server W 3 connected to said public switched telephone network or said mobile communication network.
4. A communication system according to claim 1 , wherein:
said communication network is connected to another IP communication network, and said terminal T 1 communicates with a terminal T 4 or a server W 4 connected to said another IP communication network.
5. A communication system according to claim 1 , wherein:
a communication interface between said terminal T 1 and said server S 1 is UNI (User Network Interface), and a communication interface between said servers S 1 and S 2 is NNI (Network Network Interface).
6. A communication system, wherein:
said communication system includes a communication network, and said communication networks includes plural servers,
a terminal T 1 and a terminal T 2 or a server W are connected to said communication network,
a telephone number or a domain name of said terminal T 2 or said server W is sent from said terminal T 1 , and
a server S 1 receives said telephone number or said domain name,
an IP address of a server S 2 which controls a communication of said terminal T 2 or said server W, is retrieved based on said telephone number or said domain name, and
a control of a communication between said terminal T 1 and said terminal T 2 or said server W, is carried out via said server S 1 and said server S 2 discriminated by said IP address, said communication between said terminal T 1 and said terminal T 2 or said server W is carried out via said communication network and is not carried out via said server S 2 .
7. A communication system according to claim 6 , wherein:
said terminal T 1 is connected to said communication network via a first wireless communication path, and said terminal T 2 or said server W is connected to said communication network via a second wireless communication path, and
said terminal T 1 communicates with said terminal T 2 or said server W via said first wireless communication path, said communication network and said second wireless communication path.
8. A communication system according to claim 6 , wherein:
said communication network is connected to a public switched telephone network or a mobile communication network, and said terminal T 1 communicates with a terminal T 3 or a server W 3 connected to said public switched telephone network or said mobile communication network.
9. A communication system according to claim 6 , wherein:
said communication network is connected to another IP communication network, and said terminal T 1 communicates with a terminal T 4 or a server W 4 connected to said another IP communication network.
10. A communication system according to claim 6 , wherein:
a communication interface between said terminal T 1 and said server S 1 is UNI (User Network Interface), and a communication interface between said servers S 1 and S 2 is NNI (Network Network Interface).
11. A communication system, wherein:
said communication system includes a communication network, and said communication network includes a server,
a terminal T 1 and a terminal T 2 or a server W are connected to said communication network,
a telephone number or a domain name of said terminal T 2 or said server W is sent from said terminal T 1 ,
an IP address of said server which controls a communication of said terminal T 2 or said server W, is retrieved based on said telephone number or said domain name, and
a control of a communication between said terminal T 1 and said terminal T 2 or said server W, is carried out via said server discriminated by said IP address, and
said communication between said terminal T 1 and said terminal T 2 or said server W is carried out via said communication network and is not carried out via said server.
12. A communication system according to claim 11 , wherein:
said terminal T 1 is connected to said communication network via a first wireless communication path, and said terminal T 2 or said server W is connected to said communication network via a second wireless communication path, and
said terminal T 1 communicates with said terminal T 2 or said server W via said first wireless communication path, said communication network and said second wireless communication path.
13. A communication system according to claim 11 , wherein:
said communication network is connected to a public switched telephone network or a mobile communication network, and said terminal T 1 communicates with a terminal T 3 or a server W 3 connected to said public switched telephone network or said mobile communication network.
14. A communication system according to claim 11 , wherein:
said communication network is connected to an another IP communication network, and said terminal T 1 communicates with a terminal T 4 or a server W 4 connected to said another IP communication network.
15. A communication system according to claim 11 , wherein:
a communication interface between said terminal T 1 and said communication network is UNI (User Network Interface).