System and method for providing communication on a wide area network

• US 6,118,864 A
• Filed: 12/31/1997
• Issued: 09/12/2000
• Est. Priority Date: 12/31/1997
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Carmel Connection , Inc.
• Inventors: Chang, Jack H., Tong, Raymond L.
• Primary Examiner(s): Hong, Harry S.
• Assistant Examiner(s): TIEU, BENNY QUOC
• Application Number:
  US09/001,859
• Time in Patent Office: 986 Days
• Field of Search: 379/225, 379/219, 379/220, 379/231, 379/232, 379/234, 379/201, 379/207, 379/93.09, 379/88.17, 379/88.18, 379/88.25, 379/93.01, 370/352, 370/259, 370/260
• US Class Current: 379/225
• CPC Class Codes: H04L 65/00 Network arrangements, protocols or services for supporting real-time applications in data packet communication real-time or near real-time messaging, e.g. instant messaging [IM] H04L51/04; selective video distribution H04N21/00
• CPC Class Codes: H04L 65/1053 IP private branch exchange [PBX] functionality entities or arrangements circuit switched PBXs H04M3/00
• CPC Class Codes: H04M 1/2535 adapted for voice communication over an Internet Protocol [IP] network Voice over Internet Protocol (VoIP) network equipment and services H04M7/006; implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04M 2203/6018 Subscriber or terminal logon/logoff
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/122 where the PSTN/ISDN access is used as an access to networks other than PSTN/ISDN access arrangements to networks other than PSTN/ISDN H04M7/0066; access arrangements to public data networks H04L12/2856

Abstract

In a first aspect of the present invention, at least one communication platform is networked to a switched backbone, such as the network commonly referred to as the Internet, and is configured to communicate with and manage at least one network interface, such as a private branch exchange (PBX), and a voice communication module so as to provide telecommunication services that includes voice-over-IP communication between or among communication platform users and call-holding, transferring, forwarding, conferencing, and the like (PBX-like features). The communication platform networked through the switched backbone with other communication platforms. The communication platform is networked to the switched backbone through a first network interface and to telephone lines driven by PBX equipment through a PBX network interface and/or to a telephone compatible network such as a public switched telephone network (PSTN) through a telephone network interface. Additional network interfaces may be included to support additional networks such as a local area network separately or in conjunction with other described networks. The communication platform manages the network interfaces, the voice communication module, and the PBX equipment through program control so as to provide telecommunication services which includes providing voice communication between a first user and a second user and PBX-like features. Each user may be on different networks that are networked to the switched backbone via the network interfaces.

Claims

1. A system for providing private branch exchange services, comprising:

a first communication platform coupled to a first network and a second network, said first communication platform providing private branch exchange services in response to a request received from said first network;

a second communication platform coupled to said first network and a third network, said second communication platform providing private branch exchange services in response to a request received from said first network;

wherein said first communication platform and said second communication platform each include a voice communication module and a communication platform for managing said voice communication module so as to provide said private branch exchange services, said private branch exchange services including providing substantially real-time voice communications between a first caller connecting to said first communication platform through said second network and a second caller connecting to said second communication platform through said third network; and

wherein said first communication platform and said second communication platform each include software designed to detect private branch exchange service requests and subsequently exchange a plurality of signals between said first communication platform and said second communication platform for executing said private branch exchange services in response to said private branch exchange service requests.

2. The system in claim 1, wherein said first network is a switched communications backbone.

3. The system in claim 1, wherein said first network is the Internet.

4. The system in claim 1, wherein said second network is a private branch exchange network.

5. The system in claim 1, wherein said third network is a public switched telephone network.

6. The system in claim 1, wherein data communication between said communication platform and said voice communication module is accomplished through a memory store.

7. The system in claim 1, wherein said communication platform and said voice communication module are internally connected to provide voice communication through a signal computing system architecture bus.

8. The system in claim 1, wherein said private branch exchange services include call forwarding to a third communication platform, said third communication platform coupled to said first network.

9. The system in claim 8, wherein said private branch exchange services include call forwarding from said third communication platform to a fourth communication platform, said fourth communication platform coupled to said first network.

10. The system in claim 1, wherein said private branch exchange services include call holding.

11. The system in claim 1, wherein said private branch exchange services include call transfer.

12. The system in claim 1, wherein said private branch exchange services include call conferencing with a third party serviced by a third communication platform coupled to said first network.

13. The system in claim 1, wherein said private branch exchange services are offered to a caller by using interactive voice prompting.

14. The system in claim 1, wherein said private branch exchange services include providing a voice status.

15. The system in claim 1, wherein said private branch exchange services include a messaging service.

16. The system in claim 15, wherein said messaging service is provided by said second communication platform in response to a status signal returned by a target telephone serviced by said second communication platform through said third network, said second communication platform calling said target telephone in response to a voice-over-IP link request from said first communication platform.

17. The system in claim 16, wherein said status signal includes a busy signal.

18. The system in claim 16, wherein said status signal includes a ring-no-answer signal.

19. The system in claim 1, wherein said private branch exchange services include a call forwarding service.

20. The system in claim 19, wherein said call forwarding service is provided by a third communication platform in response to a busy signal at said target telephone number.

21. The apparatus in claim 1, wherein said first communication platform further includes a private branch exchange network interface that is managed and controlled by said computer system through program control, said program control established by using modules that make Application Program Interface (API) calls to a programming interface, so that said first communication platform can send and receive telephone calls through said voice communication module from extensions defined within a private branch exchange network.

22. The system in claim 21, wherein said second network is a private branch exchange network managed by private branch exchange equipment, said first communication platform responsive to control signals generated by said private branch exchange equipment.

23. The system in claim 22, wherein said first communication platform forwards an incoming call from said private branch exchange network to said second communication platform in response to control signals describing said incoming call as a forwarded call.

24. The system in claim 23, wherein said control signals describe said incoming call by a call type and a phone number from which said incoming call was sent.

25. The system in claim 22, wherein said first communication platform provides voice mail services to an incoming call from an extension within said private branch exchange network in response to control signals describing said incoming call as a forwarded call and said extension having a corresponding configuration profile that dictates that all calls from said extension are to be forwarded to voice mail.

26. The system in claim 22, wherein said first communication platform forwards an incoming call from said private branch exchange network to said second communication platform in response to control signals describing said incoming call as a forwarded call, wherein said second communication platform services a remote target telephone number provided by a configuration profile, said configuration profile corresponding to a call recipient of said incoming call.

27. The system in claim 22, wherein said first communication platform forwards an incoming call from said private branch exchange network to said second communication platform in response to control signals describing said incoming call as a direct call, wherein said second communication platform services a remote target telephone number provided by a caller that generated said incoming call.

28. The system in claim 1, wherein said first communication platform further includes a public switched telephone network interface that is managed and controlled by a computer system through program control, said program control established by using modules that make API calls to a programming interface, so that said first communication platform can send and receive telephone calls through said voice communication module from a public switched telephone network.

29. The system in claim 28, wherein said second network is a public switched telephone network managed by a central office switch, said first communication platform responsive to control signals generated by said central office switch.

30. The system in claim 1, wherein said first communication platform provides private branch exchange services in response to a request received from said second network.

31. The system in claim 1, wherein said second communication platform provides private branch exchange services in response to a request received from said third network.

32. An apparatus for providing private branch exchange services on a switched wide area network, the apparatus comprising:

a communication platform having a computer system having an internal memory operating under program control and a telephone network interface, said telephone network interface responsive to telephone calls received from a telephone network;

a voice communication module coupled to said computer and said telephone network interface, and responsive to voice communication commands received from said communication platform so that telephone calls received from said telephone network can be switched to said voice communication module for transmission to another communication platform, said telephone network interface and said voice communication module coupled through a communications bus; and

wherein said communication platform includes software designed to detect private branch exchange service requests and subsequently exchange a plurality of signals with another communication platform for executing said private branch exchange services in response to said private branch exchange service requests.

33. The apparatus in claim 32 wherein said telephone network interface is configured to respond to data transmitted by a caller using a telephone keypad, said telephone network interface responsive to said data by passing said data to said voice communication module through an internal memory of said computer system.

34. The apparatus in claim 32, wherein said communication platform further includes a LAN interface.

35. The apparatus in claim 32, wherein said communication platform further includes a private branch exchange network interface that is managed and controlled by said computer system through program control, said program control established by using modules that make API calls to a programming interface, so that said communication platform can send and receive telephone calls through said voice communication module from extensions defined within a private branch exchange network.

36. The apparatus in claim 35, further including means for responding to control signals generated by private branch exchange equipment managing said private branch exchange network, said private branch exchange network interface networked to said private branch exchange equipment.

37. The apparatus in claim 36, wherein said communication platform includes a means for forwarding an incoming call from said private branch exchange network to a second communication platform in response to control signals describing said incoming call as a forwarded call.

38. The apparatus in claim 37, wherein said control signals describe said incoming call by a call type and a phone number from which said incoming call was sent.

39. The apparatus in claim 36, wherein said communication platform provides voice mail services to an incoming call from an extension within said private branch exchange network in response to control signals describing said incoming call as a forwarded call and said extension having a corresponding configuration profile that dictates that all calls from said extension are to be forwarded to voice mail.

40. The apparatus in claim 36, wherein said communication platform includes a means for forwarding an incoming call from an extension within said private branch exchange network to a remote target telephone number serviced by a second communication platform in response to control signals describing said incoming call as a forwarded call, said remote target telephone number obtained from a configuration profile corresponding to said extension.

41. The apparatus in claim 32, wherein said communication platform further it includes a public switched telephone network interface that is managed and controlled by said computer system through program control, said program control established by using modules that make API calls to a programming interface, so that said communication platform can send and receive telephone calls through said voice communication module from a public switched telephone network.

42. The apparatus in claim 41, further including means for responding to control signals generated by a central office switch managing said public switched telephone network, said public switched telephone network interface networked to said public switched telephone network through said central office switch.

43. The apparatus in claim 42, wherein said communication platform includes means for forwarding an incoming call from said public switched telephone network to a second communication platform in response to control signals describing said incoming call as a forwarded call.

44. The apparatus in claim 43, wherein said control signals describes said incoming call by a call type and a phone number from which said incoming call was sent.

45. The apparatus in claim 42, wherein said communication platform provides voice mail services to an incoming call from a telephone within said public switched telephone network in response to control signals describing said incoming call as a forwarded call and said telephone having a corresponding configuration profile that dictates that all calls from said telephone are to be forwarded to voice mail.

46. The apparatus in claim 42, wherein said communication platform includes a means for forwarding an incoming call from a telephone within said public switched telephone network to a remote target telephone number serviced by a second communication platform in response to control signals describing said incoming call as a forwarded call, said remote target telephone number obtained from a configuration profile corresponding to said telephone.

47. The apparatus in claim 32, wherein said communications bus is a signal computing system architecture bus.

48. The apparatus in claim 32, further including a memory store and wherein said voice communication module is responsive to call status signals stored in said memory store.

49. The apparatus in claim 48, wherein said status signals includes a ring-no-answer status, a busy status, and live answer status.

50. The apparatus in claim 48, wherein said voice communication module uses at least one status signal stored in said memory store to provide messaging services.

51. The apparatus in claim 50, wherein said messaging services includes voice messaging.

52. The apparatus in claim 50, wherein said messaging services includes fax messaging.

53. A method for providing telecommunication services, the method comprising the steps of:

coupling a first communication platform to a first network and a second network, said first communication platform responsive to a request sent through said first network by providing telecommunication services that correspond to said request;

coupling a second communication platform to said first network and a third network, said second communication platform responsive to a request received from said first network by providing telecommunication services that correspond to said request, said first communication platform and said second communication platform each including a voice communication module running under program control;

managing said voice communication module so as to provide telecommunication services corresponding to said request, said telecommunication services including providing substantially real-time voice communications between a first caller connecting to said first communication platform through said second network and a second caller connecting to said second communication platform through said third network; and

detecting private branch exchange service requests on either said first communication platform or said second communication platform and subsequently exchanging a plurality of signals between said first communication platform and said second communication platform for executing said private branch exchange services in response to said private branch exchange service requests.

54. The method in claim 53, wherein said first communication platform is responsive to a request sent through said second network by providing telecommunication services that correspond to said request.

55. The method in claim 53, wherein said second communication platform is responsive to a request sent through said third network by providing control signals generated by said private branch exchange equipment.

56. The method in claim 53, further including a step of sending control signals from said second network when a call from said second network is sent to said first communication platform.

57. The method in claim 56, wherein said control signals describes said call by a call type and a phone number from which said call was sent.

58. The method in claim 57, wherein said first communication platform responds to said call by forwarding said call to a communication platform servicing a remote target telephone number when said call type describes said call as a forwarded call and a configuration file associated with said phone number dictates that said call be forwarded to said remote target telephone number, said remote target telephone number obtained by said first communication platform from said configuration file.

59. The method in claim 58, wherein said second network is a private branch exchange network controlled by private branch exchange equipment and said phone number corresponds to an extension within said private branch exchange network.

60. The method in claim 58, wherein said second network is a public switched network controlled by a central office switch.

61. The method in claim 57, wherein said first communication platform responds to said call by forwarding said call to a communication platform servicing a remote target telephone number when said call type describes said call as a direct call and a caller that generated said call dictates that said call be forwarded to said remote target telephone number.

62. The method in claim 61, wherein said second network is a private branch exchange network controlled by private branch exchange equipment and said phone number corresponds to an extension within said private branch exchange network.

63. The method in claim 61, wherein said second network is a public switched network controlled by a central office switch.

64. The method in claim 53, wherein said first network is a switched communications backbone.

65. The method in claim 53, wherein said first network is the Internet.

66. The method in claim 53, wherein said second network is a private branch exchange network.

67. The method in claim 53, wherein said third network is a public switched telephone network.

68. The method in claim 53, wherein data communication between said communication platform and said voice communication module is accomplished through a memory store.

69. The method in claim 53, further including a step of coupling said communication platform with said voice communication module through a signal computing system architecture bus.

70. The method in claim 53, wherein said step of providing telecommunication services in response to a request received from said first network includes performing call progress analysis to obtain a request status.

71. The method in claim 70, wherein said request status includes a ring-no-answer status signal.

72. The method in claim 71, further including a step of responding to a ring-no-answer status signal by prompting a caller for a voice message.

73. The method in claim 71, further including a step of responding to a ring-no-answer status signal by prompting a caller for a fax message.

74. The method in claim 70, wherein said request status includes a busy status signal.

75. The method in claim 74, further including a step of responding to a busy status signal by prompting a caller for a voice message.

76. The method in claim 74, further including a step of responding to a busy status signal by prompting a caller for a fax message.

77. The method in claim 70, wherein said step of providing substantially real-time voice communication includes a step of responding to a live answer status signal.

78. A method for providing telecommunication services on a switched communication backbone, the method comprising the steps of:

providing a first communication platform having a telephone network interface and a voice communication module;

networking said first communication platform to a local telephone network through said telephone network interface, and to the switched communication backbone through said voice communication module;

wherein said first communication platform responds to a telephone call received from said local telephone network from a caller by;

receiving a telephone call,

prompting for a destination telephone number,

storing said destination telephone number in an internal memory when received,

establishing a voice communication link with a destination communication platform that services a local area defined by said destination telephone number, said destination communication platform having a telephone network interface and a voice communication module, and

passing said telephone number from said internal memory to destination communication platform through said voice communication link;

detecting private branch exchange service requests and subsequently exchanging a plurality of signals between said first communication platform and said destination communication platform for executing said private branch exchange services in response to said private branch exchange service requests; and

wherein said destination communication platform responds to said telephone number by calling said destination telephone number, and establishing a live call if said step of calling results in a live answer status.

79. The method in claim 78, wherein said destination communication platform initiates a voice messaging service if said step of calling results in a ring-no-answer status.

80. The method in claim 78, wherein said destination communication platform initiates fax messaging services if said step of calling results in a ring-no-answer status.

81. The method in claim 78, wherein said destination communication platform initiates messaging services if said step of calling results in a busy status.

82. The method in claim 78, wherein said destination communication platform initiates fax messaging services if said step of calling results in a ring-no-answer status.

83. The method in claim 78, wherein said step of establishing said live call includes the steps of:

sending said live answer status to a voice communication module of said destination communication platform, said voice communication module switching said telephone call to an available time slot, said time slot coupling said telephone network interface and said voice communication module of said destination communication platform; and

sending a packet of information indicating a live answer status to said first communication platform through the switched communication backbone via said voice communication module of said destination communication platform.

84. The method in claim 83, wherein said voice communication module of said first communication platform responds to said packet of information indicating a live answer status by sending an internal command indicating a live answer status and switching on said caller with an available time slot, said time slot establishing voice communication from said voice communication module of said first communication platform with said telephone network interface of said first communication platform.

85. A method for providing telecommunication services on the switched communication backbone, the method comprising the steps of:

providing a first and second communication platform, each of said platforms having a telephone network interface and a voice communication module;

networking said first communication platform to a local telephone network and said second communication platform to a remote telephone network;

networking said first and said second communication platforms to ultimately connect to the switched communication backbone through said voice communication module of said first communication platform and said voice communication module of said second communication platform, respectively; and

wherein said first communication platform responds to a telephone call received from a caller on said local telephone network by;

prompting for a destination telephone number,

storing said destination telephone number in an internal memory when received,

establishing a voice communication link with a destination communication platform that services said destination telephone number,

passing said telephone number from said internal memory to destination communication platform,

initiating a telephone call using said destination telephone number through a telephone network coupled to said second communication platform; and

detecting private branch exchange service requests on said first communication platform and subsequently exchanging a plurality of signals between said first communication platform and said destination communication platform for executing said private branch exchange services in response to said private branch exchange service requests.

86. The method of claim 85, further including a step of providing time slots in said first communication platform and said second communication platform if said telephone call is answered by a recipient.

87. The method of claim 86, further including a step of playing a voice prompt to said caller if said telephone call is not answered by a call recipient.

88. The method of claim 86, further including the step of placing said caller and said call recipient into separate time slots in response to an on-hold request by said caller.

89. The method of claim 88, further including the steps of:

placing a call to a third party in response to a telephone number received from said caller;

connecting said caller and said third party if said call is answered by said third-party; and

connecting said call recipient with said caller and said third party if said caller places a conference request after said call is answered by said third party.

90. The method of claim 89, further including the step of removing all allocated time slots to said caller, said call recipient, and said third party after said caller hangs-up.

91. The method of claim 88, further including the steps of:

placing a call to a third party in response to a telephone number received from said caller;

connecting said caller and said third party if said call is answered by said third-party; and

disconnecting said call recipient from said caller and connecting said third party to said call recipient, if said caller places a transfer request after said call is answered by said third party.