Terminal-to-terminal communication connection control method using IP transfer network
First Claim
1. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
- said IP transfer network includes a plurality of network node apparatus, a plurality of connection servers and a domain name server;
a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2;
said first network node apparatus N1 sets, in its first apparatus control table H1, a first communication record RS1 including a discrimination information to discriminate said first logical terminal LP1, and said second network node apparatus N2 sets, in its second apparatus control table H2, a second communication record RS2 including a discrimination information to discriminate said second logical terminal LP2;
the communication system is adapted such that, for a request to connect to said second terminal T2, said first terminal T1 sends a first external IP packet X1 including a connection request, a telephone number TN1 of said first terminal T1 and a telephone number TN2 of said second terminal T2;
said first external IP packet X1 inputs to said first network node apparatus N1 from said first logical terminal LP1, and said first network node apparatus N1 inspects whether said first communication record RS1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAS1 contained in said first external IP packet X1 exists in said first network node apparatus N1 or not;
in a case where said first communication record RS1 is found out by said inspection, said first network node apparatus N1 encapsulates said first external IP packet X1 with reference to said first communication record RS1 and forms a first internal packet P1, and said first network node apparatus N1 sends said first internal packet P1 to said first connection server S1;
said first connection server S1 obtains said telephone number TN1 and said telephone number TN2 from said first internal packet P1, and presents said telephone number TN2 to a domain name server DS and obtains a address information which controls a connection of said second terminal T2, said address information includes a second internal address IAB2 given for discriminating said second logical terminal LP2 and an internal address of a second connection server S2;
said first connection server S1 sets a circuit identification code (CIC) CNT1T2 by said telephone numbers TN1 and TN2, and records said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1 T2 as a group in a first CIC administration table CM1;
said first connection server S1 sends an initial address message (IAM) including said connection request to said second connection server S2, said second connection server S2 obtains said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2, and records said three values in a second CIC administration table CM2;
in response to said second connection server S2 sending out a second internal packet P2 including a receipt notification formed according to said connection request, said second internal packet P2 is converted into a second external IP packet X2 according to a rule of said second communication record R82 at said second network node apparatus N2, and said second external IP packet X2 is sent to said second terminal T2;
said second connection server S2 sends a address completion message(ACM) including a receiver propriety notification, to said first server S1;
said second terminal T2 sends out a third external IP packet X3 including a call-on notification, said third external IP packet X3 is converted into a third internal packet P3 at said second network node apparatus N2 and then said third internal packet P3 is sent to said second connection server S2, and said second connection server S2 forms a call progress message (CPG) including said call-on notification and sends it to said first connection server S1;
in response to said first connection server S1 sending out a fourth internal packet P4 including said call-on notification, said fourth internal packet P4 is converted into a fourth external IP packet X4 at said first network node apparatus N1 and then it is received at said first terminal T1;
in response to a fifth external IP packet X5 including a response notification is sent out from said second terminal T2, said fifth external IP packet X5 is converted into a fifth internal packet P5 at said second network node apparatus N2 and then said fifth internal packet P5 is received at said second connection server S2;
said second connection server S2 forms a response message (ANM) including said response notification and sends it to said first connection server S1;
in response to said first connection server S1 sending out a sixth internal packet P6 including said response notification, said sixth internal packet P6 is converted into an external IP packet X6 including said response notification at said first network node apparatus N1, and then it is received at said first terminal T1;
the communication system is adapted to permit setting communication records for terminal-to-terminal communication by sending said response notification to said first terminal T1;
said first connection server S1 instructs to set a first communication record R1 to said first network node apparatus N1, said second connection server S2 instructs to set a second communication record R2 to said second network node apparatus N2, and said communication records R1 and R2 define a communication path P12 where an internal packet can be transferred between said network node apparatuses N1 and N2;
in response to said first terminal T1 sending out a seventh external IP packet X7 containing voice or data, said seventh external IP packet X7 inputs to said first network node apparatus N1, said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said seventh external IP packet X7 exists in said first network node apparatus N1 or not;
in a case where said first communication record R1 is found out by said inspection, said first network node apparatus N1 converts said seventh external IP packet X7 into a seventh internal packet P7 that a destination address is a second internal address IA2 with reference to said first communication record R1, said seventh internal packet P7 is transferred in said communication path P12, and said seventh external IP packet X7 is reverse-capsulated and restored at said second network node apparatus N2 with reference to said first communication record R2, and said seventh external IP packet X7 is sent to said second terminal T2;
in response to said first terminal T1 sending out an eighth external IP packet X8 including a call release notification, said eighth external IP packet X8 is converted to an eighth internal packet P8 including said call release notification at said first network node apparatus N1, and then said eighth internal packet P8 is sent to said first connection server S1, said first connection server S1 sends a release message (REL) including said call release notification to said second connection server S2, said second connection server S2 sends a release completion message (RLC) to said first connection servers S1, and said first and second connection servers S1 and S2 instruct said network nodes N1 and N2 to erase said first and second communication records R1 and R2, respectively; and
a communication between said first terminal T1 and said second terminal T2 is recorded on said CIC administration tables CM1 and CM2 as a data group comprised of said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2.
2 Assignments
0 Petitions
Accused Products
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.
69 Citations
29 Claims
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1. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, a plurality of connection servers and a domain name server; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 sets, in its first apparatus control table H1, a first communication record RS1 including a discrimination information to discriminate said first logical terminal LP1, and said second network node apparatus N2 sets, in its second apparatus control table H2, a second communication record RS2 including a discrimination information to discriminate said second logical terminal LP2; the communication system is adapted such that, for a request to connect to said second terminal T2, said first terminal T1 sends a first external IP packet X1 including a connection request, a telephone number TN1 of said first terminal T1 and a telephone number TN2 of said second terminal T2; said first external IP packet X1 inputs to said first network node apparatus N1 from said first logical terminal LP1, and said first network node apparatus N1 inspects whether said first communication record RS1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAS1 contained in said first external IP packet X1 exists in said first network node apparatus N1 or not; in a case where said first communication record RS1 is found out by said inspection, said first network node apparatus N1 encapsulates said first external IP packet X1 with reference to said first communication record RS1 and forms a first internal packet P1, and said first network node apparatus N1 sends said first internal packet P1 to said first connection server S1; said first connection server S1 obtains said telephone number TN1 and said telephone number TN2 from said first internal packet P1, and presents said telephone number TN2 to a domain name server DS and obtains a address information which controls a connection of said second terminal T2, said address information includes a second internal address IAB2 given for discriminating said second logical terminal LP2 and an internal address of a second connection server S2; said first connection server S1 sets a circuit identification code (CIC) CNT1T2 by said telephone numbers TN1 and TN2, and records said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1 T2 as a group in a first CIC administration table CM1; said first connection server S1 sends an initial address message (IAM) including said connection request to said second connection server S2, said second connection server S2 obtains said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2, and records said three values in a second CIC administration table CM2; in response to said second connection server S2 sending out a second internal packet P2 including a receipt notification formed according to said connection request, said second internal packet P2 is converted into a second external IP packet X2 according to a rule of said second communication record R82 at said second network node apparatus N2, and said second external IP packet X2 is sent to said second terminal T2; said second connection server S2 sends a address completion message(ACM) including a receiver propriety notification, to said first server S1; said second terminal T2 sends out a third external IP packet X3 including a call-on notification, said third external IP packet X3 is converted into a third internal packet P3 at said second network node apparatus N2 and then said third internal packet P3 is sent to said second connection server S2, and said second connection server S2 forms a call progress message (CPG) including said call-on notification and sends it to said first connection server S1;
in response to said first connection server S1 sending out a fourth internal packet P4 including said call-on notification, said fourth internal packet P4 is converted into a fourth external IP packet X4 at said first network node apparatus N1 and then it is received at said first terminal T1;in response to a fifth external IP packet X5 including a response notification is sent out from said second terminal T2, said fifth external IP packet X5 is converted into a fifth internal packet P5 at said second network node apparatus N2 and then said fifth internal packet P5 is received at said second connection server S2; said second connection server S2 forms a response message (ANM) including said response notification and sends it to said first connection server S1; in response to said first connection server S1 sending out a sixth internal packet P6 including said response notification, said sixth internal packet P6 is converted into an external IP packet X6 including said response notification at said first network node apparatus N1, and then it is received at said first terminal T1; the communication system is adapted to permit setting communication records for terminal-to-terminal communication by sending said response notification to said first terminal T1; said first connection server S1 instructs to set a first communication record R1 to said first network node apparatus N1, said second connection server S2 instructs to set a second communication record R2 to said second network node apparatus N2, and said communication records R1 and R2 define a communication path P12 where an internal packet can be transferred between said network node apparatuses N1 and N2; in response to said first terminal T1 sending out a seventh external IP packet X7 containing voice or data, said seventh external IP packet X7 inputs to said first network node apparatus N1, said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said seventh external IP packet X7 exists in said first network node apparatus N1 or not; in a case where said first communication record R1 is found out by said inspection, said first network node apparatus N1 converts said seventh external IP packet X7 into a seventh internal packet P7 that a destination address is a second internal address IA2 with reference to said first communication record R1, said seventh internal packet P7 is transferred in said communication path P12, and said seventh external IP packet X7 is reverse-capsulated and restored at said second network node apparatus N2 with reference to said first communication record R2, and said seventh external IP packet X7 is sent to said second terminal T2; in response to said first terminal T1 sending out an eighth external IP packet X8 including a call release notification, said eighth external IP packet X8 is converted to an eighth internal packet P8 including said call release notification at said first network node apparatus N1, and then said eighth internal packet P8 is sent to said first connection server S1, said first connection server S1 sends a release message (REL) including said call release notification to said second connection server S2, said second connection server S2 sends a release completion message (RLC) to said first connection servers S1, and said first and second connection servers S1 and S2 instruct said network nodes N1 and N2 to erase said first and second communication records R1 and R2, respectively; and a communication between said first terminal T1 and said second terminal T2 is recorded on said CIC administration tables CM1 and CM2 as a data group comprised of said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2.
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2. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, a plurality of connection servers, and a domain name server; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 sets, in its first apparatus control table H1, a first communication record R81 including a discrimination information to discriminate said first logical terminal LP1, and said second network node apparatus N2 sets, in its second apparatus control table H2, a second communication record R82 including a discrimination information to discriminate said second logical terminal LP2; the communication system is adapted such that, for a request to connect to said second terminal T2 by a telephone number, said first terminal T1 sends a first external IP packet X1 including a connection request and a telephone number TN1 of said first terminal T1 and a telephone number TN2 of said second terminal T2, to a first network node apparatus N1 via said communications line L1; said first external IP packet X1 inputs to said first network node apparatus N1 from said first logical terminal LP1, and said first network node apparatus N1 inspects whether said first communication record R81 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EA81 contained in said first external IP packet X1 exists in said first network node apparatus N1 or not; in a case where said first communication record R81 is found out by said inspection, said first network node apparatus N1 encapsulates said first external IP packet X1 with reference to said first communication record R81 and forms a first internal packet P1, and sends said first internal packet P1 to said first connection server S1; said first connection server S1 presents said telephone number TN2 obtained from said first internal packet P1 to a domain name server DS and obtains a address information which controls a connection of said second terminal T2, said address information includes an external IP address EAM2 of said second terminal T2, a second internal address IAB2 given for discriminating said second logical terminal LP2 and an address A2 of a second connection server S2; said first connection server S1 sets a circuit identification code (CIC) CNT1T2 from said telephone numbers TN1 and TN2, and records said telephone numbers TN1 and TN2 and said circuit identification code CNT1T2 as a group in a first CIC administration table CM; said first connection server S1 sends an initial address message (IAM) including said connection request to said second connection server S2; in response to said second connection server S2 sending out a second internal packet P2 including a receipt notification formed according to said connection request, said second internal packet P2 is converted into a second external IP packet X2 according to a rule of said second communication record R82 at said second network node apparatus N2, and said second external IP packet X2 is received at said second terminal T2, said second connection server S2 sends address completion message (ACM) including a receiver propriety notification to said first connection server S1; a third external IP packet X3 including a call-on notification is sent out from said second terminal T2, said third external IP packet X3 is converted into a third internal packet P3 at said second network node apparatus N2 and then said third internal packet P3 received at said second connection server S2, said second connection server S2 forms a call progress message(CPG) including said call-on notification and sends it to said first connection server S1; in response to said first connection server S1 sending out a fourth internal packet P4 including said call-on notification, said fourth internal packet P4 is converted into a fourth external IP packet X4 including said call-on notification at network node apparatus N1 and then said fourth external IP packet X4 received at said first terminal T1; in response to a fifth external IP packet X5 including a response notification is sent out from said second terminal T2, said fifth external IP packet X5 is converted into a fifth internal packet P5 at said second network node apparatus N2 and then said fifth internal packet P5 is received at said second connection server S2; said second connection server S2 forms a response message (ANM) including said response notification and sends it to said first connection server S1; in response to said first connection server S1 sending out a sixth internal packet P6 including said response notification and said external IP address EAM2 of said second terminal T2, said sixth internal packet P6 is converted into a sixth external IP packet X6 at said network apparatus N1 and is received at said first terminal T1; the communication system is adapted to permit setting communication records for terminal-to-terminal communication by said response notification which is sent to said first terminal T1, said first connection server S1 instructs to set a first communication record R1 to said first network node apparatus N1, said second connection server S2 instructs to set a second communication record R2 to said second network node apparatus N2, and thereby said communication records R1 and R2 define a communication path P12 where an internal packet can be transferred between said network node apparatuses N1 and N2; in response to said first terminal T1 sending out a seventh external IP packet X7 that a destination address is said external IP address EAM2 of said second terminal T2 and contains voice or data, said seventh external IP packet X7 inputs to said first network node apparatus N1 from said first logical terminal LP1; said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and said destination IP address EAM2 contained in said seventh external IP packet X7 exists in said first network node apparatus N1 or not; in a case where said first communication record R1 is found out by said inspection, said first network node apparatus N1 converts said seventh external IP packet X7 into a seventh internal packet P7 that a destination address is a second internal address IA2; said seventh internal packet P7 is transferred in said communication path P12, and said seventh external IP packet X7 is reverse-capsulated and restored at said second network node apparatus N2 with reference to said communication record R2, and said seventh external IP packet X7 is received at said second terminal T2; in response to said first terminal T1 sending out an eighth external IP packet X8 including a call release notification, said eighth external IP packet X8 is converted into an eighth internal packet P8 including said call release notification, and said eighth internal packet P8 is received at said first connection server S1, and said first connection server S1 sends a release message (REL) including said call release notification to said second connection server S2, said second connection server S2 sends a release completion message (RLC) to said first connection servers S1;
said first and second connection servers S1 and S2 instruct to erase said first and second communication records R1 and R2, respectively, and thereby to erase said communication path P12; and
a communication between said first terminal T1 and said second terminal T2 is recorded on said CIC administration tables CM as a data group comprised of said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2.
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3. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus and a plurality of connection servers; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; the communication system is such that, for a request to connect to said second terminal T2 by a telephone number TN2, said first terminal T1 sends a connection request and said telephone number TN2 of said second terminal T2 to said first connection server S1, said first connection server S1 sends an initial address message including said connection request to said second connection server S2, and said second connection server S2 sends a receipt notification to said second terminal T2; said second connection server S2 forms a call progress message (CPG) including an call-on notification and sends it to said first connection server S1, and then said first connection server S1 sends said call-on notification to said first terminal T1; in response to said second terminal T2 sending out a response notification, said second connection server S2 forms a response message including said response notification and sends it to said first connection server S1, and said first connection server S1 sends said response notification to said first terminal T1; said first connection server S1 instructs to set a first communication record R1 to said first network node apparatus N1, said second connection server S2 instructs to set a second communication record R2 to said second network node apparatus N2, and said first and second communication records R1 and R2 define a communication path P12 where an internal packet Can be transferred between said first and second network node apparatuses N1 and N2; in response to said first terminal T1 sending out a external IP packet X12 containing voice or data, said external IP packet X12 inputs to said first network node apparatus N1 from said logical terminal LP1, said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said external IP packet X12 exists in said first network node apparatus N1 or not; in a case where said first communication record R1 is found out by said inspection, said external IP packet X12 is encapsulated and converted into an internal packet P12 with reference to said first communication record R1, and said internal packet P12 is transferred in said communication path P12, and said external IP packet X12 is reverse-capsulated and restored at said second network node apparatus N2, and is sent to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said first connection server S1 instructs to erase said communication record R1, and said second connection server S2 instructs to erase said communication record R2, and thereby deleting said communication path P12. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus and a plurality of connection servers; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; the communication system is such that, for a request to connect to said second terminal T2 by a host name HN2, said first terminal T1 sends a connection request and said host name HN2 of said second terminal T2 to said first connection server S1, said first connection server S1 sends an initial address message including said connection request to said second connection server S2, and said second connection server S2 sends a receipt notification to said second terminal T2; said second terminal T2 sends a call-on notification to said second connection server S2, said second connection server S2 forms a call progress message (CPG) including said call-on notification and sends it to said first connection server S1, and then said first connection server S1 sends said call-on notification to said first terminal T1; in response to said second terminal T2 sending out a response notification, said second connection server S2 forms a response message including said response notification and sends it to said first connection server S1, and said first connection server S1 sends said response notification to said first terminal T1; said first connection server S1 instructs to set a first communication record R1 to said first network node apparatus N1, said second connection server S2 instructs to set a second communication record R2 to said second network node apparatus N2, and said first and second communication records R1 and R2 define a communication path P12 where an internal packet Can be transferred between said first and second network node apparatuses N1 and N2; in response to said first terminal T1 sending out a external IP packet X12 containing voice or data, said external IP packet X12 inputs to said first network node apparatus N1 from said logical terminal LP1, said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said external IP packet X12 exists in said first network node apparatus N1 or not; in a case where said first communication record R1 is found out by said inspection, said external IP packet X12 is encapsulated and converted into an internal packet P12 with reference to said first communication record R1, and said internal packet P12 is transferred in said communication path P12, and said external IP packet X12 is reverse-capsulated and restored at said second network node apparatus N2, and is sent to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said first connection server S1 instructs to erase said communication record R1, and said second connection server S2 instructs to erase said communication record R2, and thereby deleting said communication path P12.
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11. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 sets, in its first apparatus control table H1, a first communication record R81 including a discrimination information to discriminate said first logical terminal LP1, and said second network node apparatus N2 sets, in its second apparatus control table H2, a second communication record R82 including a discrimination information to discriminate said second logical terminal LP2; the communication system is adapted such that, for a request to connect to said second terminal T2 by a telephone number, said first terminal T1 sends a first external IP packet X1 to said IP transfer network, said first external IP packet X1 includes a connection request, a telephone number TN1 of said first terminal T1 and a telephone number TN2 of said second terminal T2; said first external IP packet X1 inputs to said first network node apparatus N1 and said first network node apparatus N1 inspects whether said first communication record R81 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EA81 contained in said first external IP packet X1 exists in said first network node apparatus N1 or not;
in a case that said first communication record R81 is found out by said inspection, said first network node apparatus N1 encapsulates said first external IP packet X1 with reference to said first communication record R81 and forms a first internal packet P1;said IP transfer network obtains said telephone number TN1 and said telephone number TN2, and obtains a address information controlling a connection of said second terminal T2 from said telephone number TN2 by a domain name server DS, said address information includes a second internal address IAB2 given for discriminating said second logical terminal LP2; said IP transfer network sets a circuit identification code (CIC) CNT1T2 by said telephone numbers TN1 and TN2, and records said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2 as a group in a CIC administration table CM; said IP transfer network sends out a second internal packet P2 including a receipt notification and said second internal address IAB2 , said second internal packet P2 is converted into a second external IP packet X2 including said receipt notification according to a rule of said second communication record R82 at said second network node apparatus N2, and said second external IP packet X2 is sent to said second terminal T2; in response to a third external IP packet X3 including a call-on notification is sent out from said second terminal T2, said third external IP packet X3 is converted into a third internal packet P3 at said second network node apparatus N2, and then said third internal packet P3 inputs to said IP transfer network; in response to said IP transfer network sending out a fourth internal packet P4 including said call-on notification, said fourth internal packet P4 is converted into a fourth external IP packet X4 and then said fourth external IP packet X4 is sent to said first terminal T1; in response to a fifth external IP packet X5 including a response notification is sent out from said second terminal T2, said fifth external IP packet X5 is converted into a fifth internal packet P5 at said second network node apparatus N2 and then said fifth internal packet P5 is sent to said IP transfer network; said IP transfer network sends out a sixth internal packet P6 including said response notification, said sixth internal packet P6 is converted into a sixth external IP packet X6 including said response notification at said first network node apparatus N1, and then said sixth external IP packet X6 is sent to said first terminal T1, and thereby the communication system is adapted to permit setting communication records for communication between said first terminal T1 and said second terminal T2, said IP transfer network sets a first communication record R1 to said first network node apparatus N1, and sets a second communication record R2 to said second network node apparatus N2, and thereby said communication records R1 and R2 define a communication path P12 where an internal packet Can be transferred between said network node apparatuses N1 and N2; in response to said first terminal T1 sending out a seventh external IP packet X7 containing voice or data, said seventh external IP packet X7 inputs to said first network node apparatus N1, said first network node apparatus N1 inspects whether said first communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said seventh external IP packet X7 exists in said first network node apparatus N1 or not; in a case where said first communication record R1 is found out by said inspection, said first network node apparatus N1 converts said seventh external IP packet X7 into a seventh internal packet P7, and said seventh internal packet P7 is transferred in said communication path P12, and said seventh internal packet P7 is reverse-capsulated at said second network node apparatus N2 and is restored to said seventh external IP packet X7, and then said seventh external IP packet X7 is sent to said second terminal T2; in response to said first terminal T1 sending an eighth external IP packet X8 including a communication cut-off request to said IP transfer network, said eighth external IP packet X8 is converted to an eighth internal packet P8, and said eighth internal packet P8 is sent to said IP transfer network; said IP transfer network erases said first and second communication records R1 and R2, and records a starting time instant and an end time instant on said record; and a communication between said first terminal T1 and said second terminal T2 is recorded on said CIC administration table CM as a data group comprised of said telephone number TN1, said telephone number TN2 and said circuit identification code CNT1T2.
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12. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, said a plurality of network node apparatus are connected by communication lines; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; the communication system is adapted such that, for a request to connect to said second terminal T2 by a telephone number TN2, said first terminal T1 sends a connection request and said telephone number TN2 of said second terminal T2 to said IP transfer network, said IP transfer network sends a receipt notification formed according to said connection request to said second terminal T2; said IP transfer network sends a call-on notification to said first terminal T1; in response to said second terminal T2 sending out a response notification to said IP transfer network, said IP transfer network sends said response notification to said first terminal T1 , said first network node apparatus N1 sets, in itself, a communication record R1 including a discrimination information to discriminate said second logical terminal LP2, and said second network node apparatus N2 sets, in itself a communication record R2 including a discrimination information to discriminate said first logical terminal LP1 in itself, and thereby said communication records R1 and R2 define a communication path P12 between said first logical terminal LP1 and said second logical terminal LP2, where communication between said first terminal T1 and said second terminal T2 can be carried out; in response to said first terminal T1 sending out an external IP packet XGP containing voice or data to said IP transfer network, said external IP packet XGP inputs into said first network node apparatus N1 from said first logical terminal LP1; said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said external IP packet XGP exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, an internal packet PNP including said external IP packet XGP is formed with reference to said communication record R1; said internal packet PNP is sent to said second network node apparatus N2 via said communication path P12, said second network node apparatus N2 restores said external IP packet XOP from said internal packet PNP, and sends said external IP packet XOP to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said first network node apparatus N1 and N2 erase said communication records R1 and R2, respectively, and thereby to erase said communication path P12. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, said a plurality of network node apparatus are connected by communication lines; a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; the communication system is adapted such that, for a request to connect to said second terminal T2 by a host name HN2, said first terminal T1 sends a connection request and said host name HN2 of said second terminal T2 to said IP transfer network, said IP transfer network sends a receipt notification formed according to said connection request to said second terminal T2;
said second terminal T2 sends a call-on notification to said IP transfer network, said IP transfer network sends said call-on notification to said first terminal T1;in response to said second terminal T2 sending out a response notification to said IP transfer network, said IP transfer network sends said response notification to said first terminal T1, said first network node apparatus N1 sets, in itself, a communication record R1 including a discrimination information to discriminate said second logical terminal LP2, and said second network node apparatus N2 sets, in itself, a communication record R2 including a discrimination information to discriminate said first logical terminal LP1 in itself, and thereby said communication records R1 and R2 define a communication path P12 between said first logical terminal LP1 and said second logical terminal LP2, where communication between said first terminal T1 and said second terminal T2 can be carried out; in response to said first terminal T1 sending out an external IP packet XGP containing voice or data to said IP transfer network, said external IP packet XGP inputs into said first network node apparatus N1 from said first logical terminal LP1; said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said external IP packet XGP exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, an internal packet PNP including said external IP packet XGP is formed with reference to said communication record R1; said internal packet PNP is sent to said second network node apparatus N2 via said communication path P12, said second network node apparatus N2 restores said external IP packet XGP from said internal packet PNP, and sends said external IP packet XOP to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said first network node apparatus N1 and N2 erase said communication records R1 and R2, respectively, and thereby to erase said communication path P12.
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20. A communication system with employment of an Internet Protocol (IP) transfer network which can carry out communication between terminals, wherein:
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said IP transfer network includes a plurality of network node apparatus, said a plurality of network node apparatus are connected by communication lines, a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 includes a first apparatus control table H1, and said second network node apparatus N2 includes a second apparatus control table H2, apparatus control tables H1 and H2 can set or erase simple-encapsulated records in themselves respectively; the communication system is adapted such that, for a request to connect to said second terminal T2 by a telephone number TN2, said first terminal T1 sends a connection request and said telephone number TN2 of said second terminal T2 to said IP transfer network, said IP transfer network sends a receipt notification formed according to said connection request to said second terminal T2; said IP transfer network sends a call-on notification to said first terminal T1, said second terminal T2 sends a response notification to said IP transfer network, and said IP transfer network sends said response notification to said first terminal T1; said first network node apparatus N1 sets a simple-encapsulated communication record R1 including a discrimination information to discriminate said second logical terminal LP2 in said first apparatus control table H1, and said second network node apparatus N2 sets a simple-encapsulated communication record R2 including a discrimination information to discriminate said first logical terminal LP1 in said second apparatus control table H2, and thereby said communication records R1 and R2 define a communication path P12 between said first logical terminal LP1 and said second logical terminal LP2, where communication between said first terminal T1 and said second terminal T2 can be carried out; with response to said first terminal T1 sending an external IP packet XGP containing voice or data to said first network node apparatus N1, said external IP packet XGP inputs into said first network node apparatus N1 from said logical terminal LP1, said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address LAB2 contained in said external IP packet XGP exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, a simple encapsulation is carried out with reference to said first communication record R1, and an internal packet PNP including said external IP packet XGP and a discrimination information to discriminate said second logical terminal LP2 is formed, said simple encapsulation is carried out by adding a simple header, which does not include a source address including a destination address, to said external IP packet XGP, said first network node apparatus N1 sends said internal packet PNP to said second network node apparatus N2 via said communication path P12, said second network node apparatus N2 carries out a simple reverse-capsulation and restores said external IP packet XGP from said internal packet PNP, said simple reverse-capsulation is carried out by removing said simple header from said simple-encapsulated internal packet PNP, said restored external IP packet XGP is sent to said second terminal T2 via said second logical terminal LP2 and said second communication line L2, in response to said first terminal T1 sending out an external IP packet XGP including a call release notification to said IP transfer network, said IP transfer network erases said simple-encapsulated communication records R1 and R2, and thereby to erase said communication path P12. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A communication system with employment of an Internet Protocol (IP) transfer network which can carry out communication between terminals, wherein:
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said IP transfer network includes a plurality of network node apparatus, said a plurality of network node apparatus are connected by communication lines, a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 includes a first apparatus control table H1, and said second network node apparatus N2 includes a second apparatus control table H2, apparatus control tables H1 and H2 can set or erase simple-encapsulated records in themselves respectively; the communication system is adapted such that, for a request to connect to said second terminal T2 by a host name HN2, said first terminal T1 sends a connection request and said host name HN2 of said second terminal T2 to said IP transfer network, said IP transfer network sends a receipt notification formed according to said connection request to said second terminal T2; said second terminal T2 sends a call-on notification to said IP transfer network, said IP transfer network sends said call-on notification to said first terminal T1, said second terminal T2 sends a response notification to said IP transfer network, and said IP transfer network sends said response notification to said first terminal T1; said first network node apparatus N1 sets a simple-encapsulated communication record R1 including a discrimination information to discriminate said second logical terminal LP2 in said first apparatus control table H1, and said second network node apparatus N2 sets a simple-encapsulated communication record R2 including a discrimination information to discriminate said first logical terminal LP1 in said second apparatus control table H2, and thereby said communication records R1 and R2 define a communication path P12 between said first logical terminal LP1 and said second logical terminal LP2, where communication between said first terminal T1 and said second terminal T2 can be carried out; with response to said first terminal T1 sending an external IP packet XGP containing voice or data to said first network node apparatus N1, said external IP packet XGP inputs into said first network node apparatus N1 from said logical terminal LP1, said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EAB2 contained in said external IP packet XGP exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, a simple encapsulation is carried out with reference to said first communication record R1, and an internal packet PNP including said external IP packet XGP and a discrimination information to discriminate said second logical terminal LP2 is formed, said simple encapsulation is carried out by adding a simple header, which does not include a source address including a destination address, to said external IP packet XGP, said first network node apparatus N1 sends said internal packet PNP to said second network node apparatus N2 via said communication path P12, said second network node apparatus N2 carries out a simple reverse-capsulation and restores said external IP packet XGP from said internal packet PNP, said simple reverse-capsulation is carried out by removing said simple header from said simple-encapsulated internal packet PNP, said restored external IP packet XGP is sent to said second terminal T2 via said second logical terminal LP2 and said second communication line L2, in response to said first terminal T1 sending out an external IP packet X including a call release notification to said IP transfer network, said IP transfer network erases said simple-encapsulated communication records R1 and R2, and thereby to erase said communication path P12.
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28. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 includes a first apparatus control table H1, and said second network node apparatus N2 includes a second apparatus control table H2, apparatus control tables H1 and H2 can set and erase simple-encapsulated records in themselves respectively; for a request to connect to said second terminal T2 by a telephone number TN2, said first terminal T1 sends an external IP packet X1 including a connection request and said telephone number TN2 of said second terminal T2 to said IP transfer network, said IP transfer network inputs said telephone number TN2 into a server DS of said IP transfer network, and obtains a Call Progress Message and Answer Message (CPG&
ANM) omitting designation at least;said IP transfer network sends an external IP packet X2 to said second terminal T2, said external IP packet X2 includes a receipt notification formed according to said connection request, since said second terminal T2 obtains said CPG&
ANM omitting designation, said second terminal T2 does not send an external IP packet X3 including a call-on notification, when said second terminal T2 receives said external IP packet X2 including said receipt notification;said IP transfer network identifies that a call-on notification sent from said second terminal T2 is omitted, and then forms a call-on notification, and sends said call-on notification to said first terminal T1; in response to said second terminal T2 sending an external IP packet X4 including a response notification to said IP transfer network, said IP transfer network sends said response notification to said first terminal T1; said IP transfer network instructs to set a first communication record R1 to said first network node apparatus N1, said first communication record R1 includes a discrimination information to discriminate said second logical terminal LP2, and said IP transfer network instructs to set a second communication record R2 to said second network node apparatus N2, said second communication record R2 includes a discrimination information to discriminate said first logical terminal LP1, and then said communication records R1 and R2 define a communication path P12 where an internal packet Can be transferred between said network node apparatuses N1 and N2; in response to said first terminal T1 sending out an external IP packet X12 containing voice or data, said external IP packet X12 inputs said first network node apparatus N1 from said first logical terminal LP1; said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EA2 contained in said external IP packet X12 exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, said external IP packet X12 is converted into an internal packet P12 with reference to said first communication record R1, and said internal packet P12 is sent in said communication path P12, said external IP packet X12 is reverse-encapsulated and restored at said second network node apparatus N2, and is sent to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said IP transfer network instructs to erase said communication records R1 and R2, and thereby to erase said communication path P12.
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29. A communication system with employment of an Internet Protocol (IP) transfer network, wherein:
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said IP transfer network includes a plurality of network node apparatus, a first terminal T1 outside of said IP transfer network is connected to a first network node apparatus N1 by a first logical terminal LP1 via a first communications line L1, and a second terminal T2 outside of said IP transfer network is connected to a second network node apparatus N2 by a second logical terminal LP2 via a second communications line L2; said first network node apparatus N1 includes a first apparatus control table H1, and said second network node apparatus N2 includes a second apparatus control table H2, apparatus control tables H1 and H2 can set and erase simple-encapsulated records in themselves respectively; for a request to connect to said second terminal T2 by a host name HN2, said first terminal T1 sends an external IP packet X1 including a connection request and said host name HN2 of said second terminal T2 to said IP transfer network, said IP transfer network inputs said host name HN2 into a server DS of said IP transfer network, and obtains a Call Progress Message and Answer Message (CPG&
ANM) omitting designation at least;said IP transfer network sends an external IP packet X2 to said second terminal T2, said external IP packet X2 includes a receipt notification formed according to said connection request, since said second terminal T2 obtains said CPG&
ANM omitting designation, said second terminal T2 does not send an external IP packet X3 including a call-on notification, when said second terminal T2 receives said external IP packet X2 including said receipt notification;said IP transfer network identifies that a call-on notification sent from said second terminal T2 is omitted, and then forms a call-on notification, and sends said call-on notification to said first terminal T1; in response to said second terminal T2 sending an external IP packet X4 including a response notification to said IP transfer network, said IP transfer network sends said response notification to said first terminal T1; said IP transfer network instructs to set a first communication record R1 to said first network node apparatus N1, said first communication record R1 includes a discrimination information to discriminate said second logical terminal LP2, and said IP transfer network instructs to set a second communication record R2 to said second network node apparatus N2, said second communication record R2 includes a discrimination information to discriminate said first logical terminal LP1, and then said communication records R1 and R2 define a communication path P12 where an internal packet Can be transferred between said network node apparatuses N1 and N2; in response to said first terminal T1 sending out an external IP packet X12 containing voice or data, said external IP packet X12 inputs said first network node apparatus N1 from said first logical terminal LP1; said first network node apparatus N1 inspects whether said communication record R1 including a logical terminal discrimination information LX to discriminate said first logical terminal LP1 and a destination IP address EA2 contained in said external IP packet X12 exists in said first network node apparatus N1 or not; in a case where said communication record R1 is found out by said inspection, said external IP packet X12 is converted into an internal packet P12 with reference to said first communication record R1, and said internal packet P12 is sent in said communication path P12, said external IP packet X12 is reverse-encapsulated and restored at said second network node apparatus N2, and is sent to said second terminal T2; in response to said first terminal T1 or said second terminal T2 sending out a communication cut-off request, said IP transfer network instructs to erase said communication records R1 and R2, and thereby to erase said communication path P12.
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Specification