Connection apparatus for connecting a digital or analog subscriber line of communication network to communication device

• US 6,707,909 B1
• Filed: 10/20/2000
• Issued: 03/16/2004
• Est. Priority Date: 03/07/1997
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Inoue, Yutaka
• Primary Examiner(s): SMITH, CREIGHTON H
• Application Number:
  US09/692,462
• Time in Patent Office: 1,243 Days
• Field of Search: 379/387, 379/395, 379/93.03, 379/93.14
• US Class Current: 379/387.02
• CPC Class Codes: H04M 1/253 Telephone sets using digital voice transmission
• CPC Class Codes: H04M 1/573 Line monitoring circuits for detecting caller identification
• CPC Class Codes: H04Q 11/0471 Terminal access circuits

Abstract

A terminal adapter or a private branch exchange modulates a calling party number received from a digital subscriber line and sends a modulated signal to an analog terminal in the OFF period of a ringing signal or before the ringing signal is sent.

Claims

1. A connection apparatus for connecting a digital or analog subscriber line of a public communication network to a communication device, comprising:

connection means for connecting the communication device;

reception means for connecting the digital or analog subscriber line of the public communication network and receiving a digital or modulated signal for informing a called party of a calling party number from the public communication network;

conversion means for converting one of digital and modulated signals, which is received by said reception means from the public communication network at call reception, into the other; and

sending means for sending the other of the digital and modulated signals containing the call party number informed by the public communication network, which is converted from the one of the digital and modulated signals, to the communication device in a procedure of calling the communication device before the communication device responds to the call reception.

2. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from the digital signal to the communication device before sending of a ringing signal is complete.

3. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from the digital signal to the communication device before a ringing signal is sent.

4. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from the digital signal to the communication device during an OFF period of a ringing signal.

5. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from the calling party number contained in the digital signal to the communication device.

6. The apparatus according to claim 1, wherein said conversion means sends an analog modulated signal modulated by the digital signal to the communication device.

7. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from the digital signal representing a call reception request to the communication device.

8. The apparatus according to claim 1, wherein said sending means sends the modulated signal converted from a setup signal corresponding to the digital signal received from an ISDN as the digital communication network to the communication device.

9. The apparatus according to claim 1, wherein said sending means sends a call reception request command containing the digital signal converted from the modulated signal to the communication device.

10. The apparatus according to claim 1, wherein said conversion means converts the modulated signal, received before the communication network completes sending a ringing signal, into the digital signal.

11. The apparatus according to claim 1, wherein said conversion means converts the modulated signal received in an OFF period of a ringing signal intermittently sent from the communication network into the digital signal.

12. The apparatus according to claim 1, wherein said conversion means converts the modulated signal sent subsequent to a ringing signal from the communication network into the digital signal.

13. The apparatus according to claim 1, wherein said conversion means has demodulation means for demodulating the modulated signal sent from the communication network and said sending means sends the digital signal output from said demodulation means to the communication device.

14. The apparatus according to claim 1, wherein said conversion means converts the modulated signal into the digital signal representing the calling party number.

15. The apparatus according to claim 1, wherein said sending means sends a setup message, which is used in an ISDN and includes the digital signal, to the communication device.

16. The apparatus according to claim 1, wherein said sending means sends one of the digital and modulated signals, which is converted from the other of the digital and modulated signals, and a signal corresponding to the communication device to the communication device.

17. The apparatus according to claim 1, wherein said sending means sends one of the digital and modulated signals to the communication device at a timing corresponding to reception of the other of the digital and modulated signals and at a timing corresponding to operation of the communication device.

18. The apparatus according to claim 1, wherein said sending means sends the modulated signal modulated by the digital signal on the basis of a predetermined modulation scheme to the communication device and sends a modulated signal modulated by a digital signal corresponding to the communication device on the basis of the predetermined modulation scheme to the communication device.

19. The apparatus according to claim 1, wherein said sending means sends a setup signal, which corresponds to the digital signal received from an ISDN as the digital communication network and includes a signal corresponding to the communication device, to the communication device.

20. The apparatus according to claim 16, wherein the signal corresponding to the communication device corresponds to a position of a terminal of the connection apparatus to which the communication device is connected.

21. The apparatus according to claim 16, wherein the signal corresponding to the communication device represents a record of communication by the communication device.

22. The apparatus according to claim 16, wherein the signal corresponding to the communication device represents use limitation of the communication device.

23. A method of controlling a connection apparatus for connecting a digital or analog subscriber line of a public communication network to a communication device, comprising the steps of:

receiving a digital or modulated signal for informing a called party of a calling party number from the public communication network;

converting one of digital and modulated signals received in said receiving step from the public communication network at call reception, into the other; and

sending the other of the digital and modulated signals containing the calling party number informed by the public communication network, which is converted in said converting step from the one of the digital and modulated signals, to the communication device in a procedure of calling the communication device before the communication device responds to the call reception.

24. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from the digital signal to the communication device before sending of a ringing signal is complete.

25. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from the digital signal to the communication device before a ringing signal is sent.

26. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from the digital signal to the communication device during an OFF period of a ringing signal.

27. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from the calling party number contained in the digital signal to the communication device.

28. The method according to claim 23, wherein the conversion step includes a step of sending an analog modulated signal modulated by the digital signal to the communication device.

29. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from digital signal representing a call reception request to the communication device.

30. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal converted from a setup signal corresponding to the digital signal received from an ISDN as the digital communication network to the communication device.

31. The method according to claim 23, wherein the sending step includes a step of sending a call reception request command containing a digital signal converted from the modulated signal to said communication device.

32. The method according to claim 23, wherein the conversion step includes a step of converting the analog signal, received before the communication network completes sending a ringing signal, into the digital signal.

33. The method according to claim 23, wherein the conversion step includes a step of converting the analog signal received in an OFF period of a ringing signal intermittently sent from the communication network into the digital signal.

34. The method according to claim 23, wherein the conversion step includes a step of converting the analog signal sent subsequent to a ringing signal from the communication network into the digital signal.

35. The method according to claim 23, wherein the conversion step includes a demodulation step of demodulating the modulated signal sent from the communication network, and the sending step includes a step of sending the digital signal obtained in said demodulation step to the communication device.

36. The method according to claim 23, wherein the conversion step includes a step of converting the modulated signal into the digital signal representing the calling party number.

37. The method according to claim 23, wherein the sending step includes a step of sending a setup message, which is used in an ISDN and includes the digital signal, to the communication device.

38. The method according to claim 23, wherein the sending step includes a step of sending one of the digital and analog signals, which is converted from the other of the digital and modulated signals, and a signal corresponding to the communication device to the communication device.

39. The method according to claim 23, wherein the sending step includes a step of sending one of the digital and modulated signals to the communication device at a timing corresponding to reception of the other of the digital and modulated signals and at a timing corresponding to operation of the communication device.

40. The method according to claim 23, wherein the sending step includes a step of sending the modulated signal modulated by the digital signal on the basis of a predetermined modulation scheme to the communication device, and a step of sending a modulated signal modulated by a digital signal corresponding to the communication device on the basis of the predetermined modulation scheme to the communication device.

41. The method according to claim 23, wherein the sending step includes a step of sending a setup signal, which corresponds to the digital signal received from an ISDN as the digital communication network and includes a signal corresponding to the communication device, to the communication device.

42. The method according to claim 38, wherein the signal corresponding to the communication device corresponds to a position of a terminal of the connection apparatus to which the communication device is connected.

43. The method according to claim 38, wherein the signal corresponding to the communication device represents a record of communication by the communication device.

44. The method according to claim 38, wherein the signal corresponding to the communication device represents use limitation of the communication device.

45. A storage medium which stores a control program for a connection apparatus for connecting a digital or analog subscriber line of a communication network to a communication device, said storage medium storing:

reception means for receiving a digital or analog signal from the communication network; and

conversion means for converting one of digital and analog signals, which is received by said reception means at call reception before the communication device responds to the call reception, into the other,

wherein said conversion means sends the other of the digital and analog signals, which is converted from the one of the digital and analog signals, to the communication device in a procedure of calling the communication device.

46. The medium according to claim 45, wherein said conversion means sends the analog signal converted from the digital signal to the communication device before sending of a ringing signal is complete.

47. The medium according to claim 45, wherein said conversion means sends the analog signal converted from the digital signal to the communication device before a ringing signal is sent.

48. The medium according to claim 45, wherein said conversion means sends the analog signal converted from the digital signal to the communication device during an OFF period of a ringing signal.

49. The medium according to claim 45, wherein said conversion means sends the analog signal converted from a calling party number contained in the digital signal to the communication device.

50. The medium according to claim 45, wherein said conversion means sends an analog modulated signal modulated by the digital signal to the communication device.

51. The medium according to claim 45, wherein said conversion means sends the analog signal converted from the digital signal representing a call reception request to the communication device.

52. The medium according to claim 45, wherein said conversion means sends the analog signal converted from a setup signal corresponding to the digital signal received from an ISDN as the digital communication network to the communication device.

53. The medium according to claim 45, wherein said conversion means sends a call reception request command containing the digital signal converted from the analog signal to the communication device.

54. The medium according to claim 45, wherein said conversion means converts the analog signal received before the communication network completes sending a ringing signal, into the digital signal.

55. The medium according to claim 45, wherein said conversion means converts the analog signal received in an OFF period of a ringing signal intermittently sent from the communication network into the digital signal.

56. The medium according to claim 45, wherein said conversion means converts the analog signal sent subsequent to a ringing signal from the communication network into the digital signal.

57. The medium according to claim 45, wherein said conversion means has demodulation means for demodulating the analog signal sent from the communication network and outputs the digital signal output from said demodulation means to the communication device.

58. The medium according to claim 45, wherein said conversion means converts the analog signal into the digital signal representing a calling party number.

59. The medium according to claim 45, wherein said conversion means sends a setup message used in an ISDN and including the digital signal to the communication device.

60. The medium according to claim 45, wherein said conversion means sends one of the digital and analog signals, which is converted from the other of the digital and analog signals, and a signal corresponding to the communication device to the communication device.

61. The medium according to claim 45, wherein said conversion means sends one of the digital and analog signals to the communication device at a timing corresponding to reception of the other of the digital and analog signals and at a timing corresponding to operation of the communication device.

62. The medium according to claim 45, wherein said conversion means sends the analog signal modulated by the digital signal on the basis of a predetermined modulation scheme to the communication device and sends an analog signal modulated by a digital signal corresponding to the communication device on the basis of the predetermined modulation scheme to the communication device.

63. The medium according to claim 45, wherein said conversion means sends a setup signal which corresponds to the digital signal received from an ISDN as the digital communication network and includes a signal corresponding to the communication device, to the communication device.

64. The medium according to claim 60, wherein the signal corresponding to the communication device corresponds to a position of a terminal of the connection apparatus to which the communication device is connected.

65. The medium according to claim 60, wherein the signal corresponding to the communication device represents a record of communication by the communication device.

66. The medium according to claim 60, wherein the signal corresponding to the communication device represents use limitation of the communication device.