Service system for interconnecting heterogeneous communication terminals, and communication node device and communication terminal used in the same

Claim 2

A service system for interconnecting heterogeneous communication terminals comprising a communication network, said communication network including: plural communication terminals each treating a different medium; a communication node device; and media converting means connected with said communication terminals via said communication node device; said communication network including an information factor indicating an attribute of each of said communication terminals, said information factor being inserted in a message regarding a call establishment between each of said communication terminals and said .communication node device; said communication node device operating so as to select a medium receivable by a destination communication terminal of said communication terminals, to correct destination message from an originating communication terminal of said communication terminals, and to forward a corrected destination message to said destination communication terminal, when a communication refusal from said destination communication terminal due to a communication terminal attribute disagreement is recognized in response to the destination message sent from said originating communication terminal to said destination communication terminal; said media converting means, after a communication has been established between said originating communication terminal and said destination communication terminal , notifying said destination communication terminal that a destination call from said originating communication terminal has been received and notifying said originating communication terminal that the communication has been established through a media conversion; whereby said originating communication terminal is notified that the media conversion has established the communication.

Claim 3

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said information factor indicating an attribute of each of said communication terminals inserted in the message regarding a call establishment between each of said communication terminals and said communication node device includes media conversion enable information which notifies said communication node device that a user of the originating communication terminal wants to execute a forced destination call to said destination communication terminal.

Claim 4

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said media converting means is arranged in said communication node device.

Claim 5

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said media converting means is arranged in a communications center separate from said communication node device.

Claim 6

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals include a telephone terminal and a facsimile terminal; and wherein said media converting means includes means for enabling an information conversion between said telephone terminal and said facsimile terminal.

Claim 7

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals include a telephone terminal and a data terminal, and wherein said media converting means includes means for enabling an information conversion between said telephone terminal and said data terminal.

Claim 8

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals include a telephone terminal and a picture telephone terminal, and wherein said media converting means includes means for enabling an information conversion between said telephone terminal and said picture telephone terminal.

Claim 9

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals include a facsimile terminal and a data terminal, and wherein said media converting means includes means for enabling an information conversion between said facsimile terminal and said data terminal.

Claim 10

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals include a facsimile terminal and a picture telephone terminal, and wherein said media converting means includes means for enabling an information conversion between said facsimile terminal and said picture telephone terminal.

Claim 11

A service system for interconnecting heterogeneous communication terminals according to claim 1, wherein said communication terminals includes a data terminal and a picture telephone terminal, and wherein said media converting means includes media for interchanging information between said data terminal and said picture telephone terminal.

Claim 12

A communication node device for use in a service system for interconnecting heterogeneous communication terminals, comprising: transmit/receive means for interchanging information between communication terminals; communication refusal recognizing means for recognizing a communication refusal via said transmit/receive means due to a communication terminal attribute disagreement from a destination communication terminal of said communication terminals in response to a destination message sent from an originating communication terminal of said communication terminals to said destination communication terminal, said destination message having an information factor indicating a communication terminal attribute; selecting means for selecting a medium receivable by said destination communication terminal when said communication refusal recognizing means recognizes that said destination communication terminal has executed a communication refusal due to the communication terminal attribute disagreement; destination message correcting means for correcting the destination message from said originating communication terminal based on a selection result when said selecting means selects a medium receivable by said destination communication terminal; forwarding means for forwarding a corrected destination message from said destination message correcting means to said destination communication terminal via said transmit/receive means; destination communication terminal notifying means for notifying said destination communication terminal that a destination call has been provided from said originating communication terminal via media converting means when a communication is established by forwarding the corrected destination message by said forwarding means; and originating communication terminal notifying means for notifying said originating communication terminal that the communication has been established through a media conversion, via said transmit/receive means.

Claim 13

A communication node device for use in a service system for interconnecting heterogeneous communication terminals, comprising: transmit/receive means for interchanging information between communication terminals; communication refusal recognizing means for recognizing a communication refusal via said transmit/receive means due to a communication terminal attribute disagreement from a destination communication terminal of said communication terminals in response to a destination message sent from an originating communication terminal of said communication terminals to said destination communication terminal, said destination message having an information factor indicating a communication terminal attribute; selecting means for selecting a medium receivable by said destination communication terminal when said communication refusal recognizing means recognizes that said destination communication terminal has executed a communication refusal due to the communication terminal attribute disagreement; destination message correcting means for correcting the destination message from said originating communication terminal based on a selection result when said selecting means selects a medium receivable by said destination communication terminal; forwarding means for forwarding a corrected destination message from said destination message correcting means to said destination communication terminal via said transmit/receive means; destination communication terminal notifying means for notifying said destination communication terminal that a destination call has been provided from said originating communication terminal via media converting means when a communication is established by forwarding the corrected destination message by said forwarding means; and originating communication terminal notifying means for notifying said originating communication terminal that the communication has been established through a media conversion, via said transmit/receive means.

Claim 14

A communication node device for use in a service system for interconnecting heterogeneous communication terminals, according to claim 11, wherein said information factor indicating an attribute of each of said communication terminals inserted in the message regarding a call establishment between each of said communication terminals and said communication node device, includes media conversion enable information which notifies said communication node device that a user of the originating communication terminal wants to execute a forced destination call to said destination communication terminal.

Claim 15

A communication terminal for use in a service system for interconnecting heterogeneous communication terminals, comprising: transmit/receive means for interchanging information with a communication node device; judging means for judging whether it is possible to communicate with an originating communication terminal, based on an information factor when a destination message sent from said communications node device to said originating communication terminal is received via said transmit/receive means, said information factor indicating an originating communication terminal attribute .included in said destination message; communication refusal transmitting means for transmitting a communication refusal due to a communication terminal attribute disagreement to said communication node device via said transmit/receive means when said judging means judges that a communication is not performed to said originating communication terminal due to the communication terminal attribute disagreement; and notifying means for notifying that a destination call from said originating communication terminal has been sent from said communication node device to a destination communication terminal after said communication refusal transmitting means transmitted a communication refusal.

Claim 16

A communication terminal for use in a service system for interconnecting heterogeneous communication terminals, comprising: transmit/receive means for interchanging information with a communication node device; judging means for judging whether it is possible to communicate with an originating communication terminal, based on an information factor when a destination message sent from said communications node device to said originating communication terminal is received via said transmit/receive means, said information factor indicating an originating communication terminal attribute .included in said destination message; communication refusal transmitting means for transmitting a communication refusal due to a communication terminal attribute disagreement to said communication node device via said transmit/receive means when said judging means judges that a communication is not performed to said originating communication terminal due to the communication terminal attribute disagreement; and notifying means for notifying that a destination call from said originating communication terminal has been sent from said communication node device to a destination communication terminal after said communication refusal transmitting means transmitted a communication refusal.

Claim 17

A communication terminal for use in a service system for interconnecting heterogeneous communication terminals, according to claim 13, wherein said information factor indicating an attribute of each of said communication terminals inserted in a message regarding a call establishment between each of said communication terminals and said communication node device, includes media conversion enable information which notifies said communication node device that a user of the originating communication terminal wants to execute a forced destination call to said destination communication terminal.