Communications system using a central controller to control at least one network and agent system

• US 5,546,452 A
• Filed: 03/02/1995
• Issued: 08/13/1996
• Est. Priority Date: 03/02/1995
• Status: Expired due to Term

• Current Assignee: Cisco Systems, Inc.
• Original Assignee: GeoTel Communications Corp. (Cisco Systems, Inc.)
• Inventors: Kelly, James P., Johnson, Lawrence E., Davis, Charles R., Milano, Vincent J. Jr., Webber, Steven H., Andrews, G. Wayne, Stern, Jerry A.
• Primary Examiner(s): Hofsass, Jeffery
• Assistant Examiner(s): Wolinsky, Scott
• Application Number:
  US08/398,950
• Time in Patent Office: 530 Days
• Field of Search: 379/201, 379/220, 379/221, 379/219, 379/279, 379/265, 379/267, 379/269, 379/112, 379/207, 379/202, 379/214, 379/157, 379/88, 379/89
• US Class Current: 379/219
• CPC Class Codes: H04M 2242/22 Automatic class or number identification arrangements
• CPC Class Codes: H04M 3/22 Arrangements for supervision, monitoring or testing
• CPC Class Codes: H04M 3/36 Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
• CPC Class Codes: H04M 3/42042 Notifying the called party of information on the calling party details within substation equipment H04M1/57, signalling details H04Q3/72
• CPC Class Codes: H04M 3/42059 Making use of the calling party identifier
• CPC Class Codes: H04M 3/42102 Making use of the called party identifier
• CPC Class Codes: H04M 3/493 Interactive information services, e.g. directory enquiries ; Arrangements therefor, e.g. interactive voice response [IVR] systems or voice portals
• CPC Class Codes: H04M 3/5191 interacting with the Internet
• CPC Class Codes: H04M 3/5237 Interconnection arrangements between ACD systems
• CPC Class Codes: H04M 7/12 for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/1307 Call setup
• CPC Class Codes: H04Q 2213/13072 Sequence circuits for call signaling, ACD systems
• CPC Class Codes: H04Q 2213/13091 CLI, identification of calling line
• CPC Class Codes: H04Q 2213/13103 Memory
• CPC Class Codes: H04Q 2213/13104 Central control, computer control
• CPC Class Codes: H04Q 2213/13141 Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13148 Maximum profit routing
• CPC Class Codes: H04Q 2213/13167 Redundant apparatus
• CPC Class Codes: H04Q 2213/13206 User-to-user signaling, UUS
• CPC Class Codes: H04Q 2213/13209 : ISDN
• CPC Class Codes: H04Q 2213/1322 : PBX
• CPC Class Codes: H04Q 2213/13288 : Closed user groups, CUG
• CPC Class Codes: H04Q 2213/13296 : Packet switching, X.25, frame relay
• CPC Class Codes: H04Q 2213/13349 : Network management
• CPC Class Codes: H04Q 2213/13377 : Recorded announcement
• CPC Class Codes: H04Q 2213/13389 : LAN, internet
• CPC Class Codes: H04Q 3/66 : Traffic distributors
• CPC Class Codes: H04Q 3/72 : Finding out and indicating number of calling subscriber

Abstract

A communications system and method for automatically making telephone routing decisions with "global authority" based upon information gathered in real time from the entire communications system and global optimization criteria. The present invention permits unified central control and management for the entire system.

Claims

1. A communications system, and comprising, at least one network for connecting a call to at least one agent system, said agent system including a plurality of workgroups, and being controlled by control signals supplied to said agent system, and a primary central controller for generating control signals for being supplied to said network and said agent system to control said network and said agent system so as to optimally route said call to a workgroup of said agent system, said central controller being adapted to generate said control signals for controlling said network and said agent system based upon status messages received from said agent system, requested service data from said network, and optimization parameters stored within said central controller.

2. A communications system according to claim 1, wherein said network comprises a plurality of different long distance carriers and said central controller comprises means for interfacing to said different carriers whereby to supply pertinent control signals to said different carriers.

3. A communications system according to claim 1, wherein said agent system includes an automatic call distribution (ACD) system having a plurality of workgroups and said control signals permit said call to be optimally routed to one of said workgroups of said ACD system.

4. A communications system according to claim 1, wherein said agent system comprises an interactive voice response system and said control signals permit said call to be optimally routed to said interactive voice response system.

5. A communications system according to claim 1, wherein said agent system comprises a private branch exchange system having a plurality of workgroups and said control signals permit said call to be optimally routed to one of said workgroups.

6. A communications system according to claim 1, wherein said requested service data comprises a telephone number.

7. A communications system according to claim 1, wherein said control signals are adapted to permit call load among said agent systems to be balanced.

8. A communications system according to claim 1, wherein said control signals are adapted to permit cost of operating said communications system to be minimized.

9. A communications system according to claim 1, wherein said control signals are adapted to permit call distribution to the longest available agent.

10. A system according to claim 1, and further comprising, a redundant controller for controlling said system in event of malfunctioning of said primary controller, and means for virtually synchronizing receipt of status messages and service data by said controllers.

11. A system according to claim 1, wherein said agent system comprises a conventional Switch-To-Computer-Applications Interface (SCAI) for permitting said primary central controller to control distribution of calls in said agent system.

12. A system according to claim 1, wherein said control signals include translation routing messages for aiding in routing said call through said system.

13. A system according to claim 1, wherein said network is a private network.

14. A system according to claim 1, wherein said routing is also based upon a desired termination supplied to said system.

15. A system according to claim 1, wherein said requested service data comprises calling line identification data.

16. A system according to claim 1, wherein said requested service data comprises a sequence of digits entered by a caller.

17. A system according to claim 1, wherein said controller generates said control signals based upon, at least in part, caller-entered digits.

18. A system according to claim 1, wherein said agent system includes a control interface for permitting control of said agent system by said central controller.

19. A communications system according to claim 1, wherein said network comprises at least one long distance carrier.

20. A communications system according to claim 19, wherein said long distance carrier comprises a SS7 long distance control network and said central controller comprises means for interfacing to said control network.

21. A communications system according to claim 1, and further comprising, means for interfacing said central controller with a plurality of agent systems.

22. A communications system according to claim 21, wherein said central controller also comprises wide area network means.

23. A communications system according to claim 1, wherein said central controller comprises routing means for generating control signals for controlling said at least one agent system based upon said status messages, said service data, and said optimization parameters, said routing means comprising database means for dynamically storing, updating, and retrieving said status messages, service data, and optimization parameters.

24. A communications system according to claim 23, and further comprising, administration means for permitting a user to control operation of said system.

25. A communications system according to claim 24, wherein said administration means comprises means for inputting said optimization parameters.

26. A communications system according to claim 1, and further comprising, a redundant central controller for controlling said system in event of failure of said primary central controller.

27. A communications system according to claim 26, wherein said redundant central controller is geographically remote from said primary central controller.

28. A communications system according to claim 26, and further comprising means for synchronizing respective internal states of said primary and redundant central controllers to permit said redundant central controller to essentially seamlessly begin controlling said system upon failure of said primary controller.

29. A communications system according to claim 1, and further comprising monitoring means for monitoring operation of said system.

30. A communications system according to claim 29, wherein said central controller includes means for logging system information to a database.

31. A communications system according to claim 1, wherein said agent systems are connected to said central controller via wide area network means.

32. A communications system according to claim 31, wherein said wide area network means comprises Transmission Control Protocol/Internet Protocol means.

33. A system according to claim 1, wherein said agent system also includes at least one caller service and said primary central controller is also for generating control signals for optimally routing said call to said caller service.

34. A system according to claim 33, wherein said caller service comprises an interactive voice response system.

35. A system according to claim 1, wherein said agent system also includes a local controller for routing said call through said agent system in response to said control signals.

36. A system according to claim 35, wherein said local controller is connected to said primary central controller via a wide area network.

37. A call-forwarding method for use in the system of claim 1, and comprising the steps of:

a. supplying said controller with data related to said call and representative of a desired forwarding termination for said call;

b. generating in said controller additional control signals for causing said network and said agent system to connect said call to said desired termination; and

c. supplying said additional control signals to said network and said agent system to cause said network and said agent system to connect said call to said desired termination, thereby forwarding said call to said desired forwarding termination.

38. A call-forwarding method according to claim 37, wherein said desired termination comprises an interactive voice response unit for recording information from said call.

39. A system according to claim 1, and further comprising, means for distributing information concerning said system to a plurality of means for administering said system.

40. A system according to claim 39, wherein said distribution means also gathers information concerning said system for use by said monitoring means.

41. A communications system, and comprising:

a. a plurality of public networks for connecting a plurality of calls to a plurality of respective agent systems in response to control signals supplied to said public networks, each of said agent systems including a plurality of workgroups;

b. at least two central controllers for generating control signals for being supplied to said public networks and said agent systems to control said public networks and said agent systems so as to optimally route said calls through said networks and said agent systems to certain of said workgroups, said central controllers being adapted to generate said control signals based upon status messages received from said agent systems, requested service data from said networks, and optimization parameters stored within said central controllers, said central controllers including a primary central controller and a redundant central controller, said redundant central controller being for controlling said system in event of failure of said primary central controller, said central controllers being geographically separated from each other;

c. synchronizer means for virtually synchronizing respective internal states of said central controllers;

d. interfacing means for interfacing said central controllers to said public networks whereby to permit supply of control signals to each of said public networks; and

e. means for interfacing said central controllers to said plurality of agent systems.

42. A communications system according to claim 41, and further comprising, monitoring means for monitoring operation of said system.

43. A communications system according to claim 41, and further comprising, administration means for permitting a user to control operation of said communications system.

44. A communications system according to claim 43, wherein said administration means permits input of said optimization parameters.

45. A communications system according to claim 43, wherein said means for interfacing said central controllers to said plurality of agent systems comprises wide area network means.

46. A communications system according to claim 45, wherein said central controllers each comprise database means for storing and retrieving said status messages, requested service data, and optimization parameters.

47. A communications system, and comprising:

a. a public network for connecting a plurality of calls to a plurality of agent systems based upon control signals supplied to said public network, said agent systems being controlled by control signals supplied to said agent systems;

b. a primary central controller for controlling said communications system during normal operation thereof, said controller having means for receiving status messages from said agent systems and requested service data from said network, said controller also having means for generating and supplying said control signals to said network and said agent systems whereby to control said public network and said agent systems so as to optimally route said calls through said public networks to said agent systems; and

c. a redundant controller for controlling said communications system in event of failure of said primary controller, said redundant controller including means for permitting shifting of control functions from said primary controller to said redundant controller upon said failure of said primary controller.

48. A method for optimally routing a call through a communications system having at least one public network for connecting said call to a workgroup of an agent system based upon control signals supplied to said public network and said agent system, said workgroup being one of a plurality of workgroups, said method comprising the steps of:

a. transmitting requested service data from said network to a central controller;

b. transmitting status messages from said agent system to said controller;

c. generating in said controller control signal for controlling said network and said agent system in response to said requested service data, said status messages and a set of optimization parameters stored within said controller; and

d. supplying said control signals from said controller to said network and said agent system whereby to control said network and said agent system so as to optimally route said call through said network to said workgroup.

49. A method according to claim 48, and further comprising, monitoring whether said controller is functioning properly whereby to determine whether a failure condition of said controller exists.

50. A communications system according to claim 48, and further comprising, means for checking operation of said controller whereby to ascertain whether said central controller is functioning properly.

51. A method according to claim 48, and further comprising, interfacing a user to said system whereby to permit said user to administer said system.

52. A method according to claim 48, and further comprising, synchronizing respective internal states of said central controller and a redundant controller for controlling said system in event of failure of said central controller.

53. A method according to claim 52, and further comprising, geographically separating said central and redundant controllers.

54. A method according to claim 52, wherein said synchronization is virtual.

55. A method according to claim 48, and further comprising, storing said requested service data, said status messages, and said set of optimization parameters in a database.

56. A method according to claim 55, and further comprising, storing system configuration information in said database.

57. A method according to claim 56, and further comprising, automatically updating entries in said database when said entries change.

58. A method according to claim 55, wherein said parameters including call routing parameters.

59. A method according to claim 48, and further comprising, monitoring elements of said system whereby to determine whether said elements are functioning properly.

60. A method according to claim 59, wherein said monitoring comprises periodically querying said elements for proper response.

61. A communications system, and comprising, at least one network for connecting a call to at least one caller service, a primary central controller for generating control signals for supply to said network and said at least one caller service to control said network and said at least one caller service so as to optimally route said call to said at least one caller service, said central controller being adapted to generate said control signals for controlling said network and said at least one caller service based upon status messages received from said at least one caller service, requested service data from said network, and optimization parameters stored within said central controller.

62. A system according to claim 61, wherein said central controller is also adapted to generate said control signals based upon status messages received from at least one agent system.

63. A system according to claim 61, wherein said at least one caller service comprises a stand-alone interactive voice response system.

64. A system according to claim 61, wherein said at least one caller service comprises an interactive voice response system (IVR) and the control signals generated by said central controller cause said IVR to record appropriate data from said call for facilitating a transaction with an individual making said call.

65. A system according to claim 61, wherein said at least one caller service comprises an interactive voice response system for recording data from said call for facilitating a transaction with an individual making said call.

66. A system according to claim 61, wherein said network is a private network.

67. A method for controlling a communications system including at least one network for connecting a call to an interactive voice response system (IVR), a primary central controller for generating control signals for supply to said network and said IVR to control said network and said IVR so as to optimally route said call to said IVR, said central controller being adapted to generate said control signals for controlling said network and said at least one caller service based upon status messages received from said IVR, requested service data from said network, and optimization parameters stored within said central controller, said method comprising the steps of:

a. transmitting to said network control signals generated in said central controller for causing said network to interconnect said call and said IVR; and

b. transmitting to said IVR control signals generated in said central controller for causing said IVR to record data from said call for facilitating a transaction with an individual making said call.

68. A method according to claim 67, wherein said system further comprises at least one agent system and said method further comprises transmitting to said network control signals generated in said central controller using data recorded from said call for causing said call to be connected to said at least one agent system after having been connected to said IVR.

69. A method according to claim 67, wherein said network is a private network.

70. A system according to claim 67, wherein said data is for permitting a workgroup to undertake further action concerning said call and said method further comprises transmitting to said IVR control signals generated in said controller for causing said IVR to transmit at least a portion of said data to said workgroup.

71. A method according to claim 67, wherein said system also comprises at least one agent system, said call is placed by a caller, and said method further comprises terminating said call and using data recorded from said call to generate control signals in said central controller for causing said network to automatically initiate connecting of another call from said caller to said agent system.

72. A method according to claim 71, said method further comprising, prior to connecting said another call from said caller to said agent system, prompting said caller to indicate whether said caller wishes to be connected to said agent system.