Distributed conference bridge

• US 6,782,413 B1
• Filed: 02/11/2000
• Issued: 08/24/2004
• Est. Priority Date: 02/11/2000
• Status: Expired due to Term

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Loveland, Shawn D.
• Primary Examiner(s): Burgess, Glenton B.
• Assistant Examiner(s): FLYNN, KIMBERLY D
• Application Number:
  US09/502,849
• Time in Patent Office: 1,656 Days
• Field of Search: 709/204, 709/205, 709/206, 709/207, 709/232, 379/202, 379/203, 379/204, 379/93.21, 379/120, 370/265, 370/266
• US Class Current: 709/204
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 63/0861 using biometrical features, e.g. fingerprint, retina-scan cryptographic mechanisms or cryptographic arrangements for entity authentication using biological data H04L9/3231
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/401 wherein the services involve a main real-time session and one or more additional parallel real-time or time sensitive sessions, e.g. white board sharing or spawning of a subconference
• CPC Class Codes: H04L 65/403 Arrangements for multi-party communication, e.g. for conferences data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15
• CPC Class Codes: H04L 65/4046 with distributed floor control
• CPC Class Codes: H04M 2201/60 Medium conversion
• CPC Class Codes: H04M 2207/20 hybrid systems
• CPC Class Codes: H04M 3/385 using speech signals
• CPC Class Codes: H04M 3/562 where the conference facilities are distributed
• CPC Class Codes: H04M 3/567 Multimedia conference systems
• CPC Class Codes: H04Q 2213/13093 Personal computer, PC
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13196 Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/1322 PBX
• CPC Class Codes: H04Q 2213/1324 Conference call
• CPC Class Codes: H04Q 2213/13282 Call forward, follow-me, call diversion
• CPC Class Codes: H04Q 3/0045 involving hybrid, i.e. a mixture of public and private, or multi-vendor systems
• CPC Class Codes: H04Q 3/62 for connecting to private branch exchanges

Abstract

A system is disclosed for enabling communication between server resources and a wide spectrum of end-terminals to enable users access to the resources of both converged and non-converged networks via voice and/or electronically generated commands.

A configurable distributed conference bridge is incorporated within the converged network architecture model of the present invention. The distributed conference bridge enables local conference resources to be utilized and incorporates external service bureau conference bridge resources when needed to supplement the internal conference bridge resources of a system.

Claims

1. A method for creating a set of connections for a distributed conference bridge, including a first conference bridge and a physically distinct second conference bridge, joining a set of participants in a single conference, the method comprising the steps of:

configuring a communications controller for an internal communications system, the configuring step comprising identifying the second conference bridge;

connecting participants to the first conference bridge until a threshold of connected participants is reached;

establishing a conference connection between the first conference bridge and the second conference bridge;

issuing a redirection command causing conference participants to be directed to the second conference bridge; and

providing a terminal abstraction, interposed between functional resources of a conference bridge application and end-devices, to provide the functional resources in a manner tailored to individual ones of a variety of user interfaces, including graphical and voice user interfaces, the terminal abstraction comprising;

a graphical user interface terminal abstraction component interposed between the functional resources and a first end-device supporting a graphical user interface, the graphical user interface terminal abstraction component transforming messages from the first end-device to a generic format expected by the functional resources, the graphical user interface terminal abstraction component further transforming messages from the functional resources to a first end-device format expected by the first end-device; and

a voice user interface terminal abstraction component interposed between the functional resources and a second end-device supporting a voice user interface, the voice user interface terminal abstraction component transforming messages from the second end-device to a generic format expected by the functional resources, the voice user interface terminal abstraction component further transforming messages from the functional resources to a second end-device format expected by the second end-device.

2. The method of claim 1 wherein the redirection command is transmitted by a telephone system communications controller to a phone company central office.

3. The method of claim 2 wherein the redirection command is provided through QSIG signaling.

4. The method of claim 2 wherein the redirection command is provided through PINT signaling.

5. The method of claim 2 wherein the redirection command is provided through in-band signaling.

6. The method of claim 1 wherein the configuring step further comprises designating a threshold value corresponding to a number of conference participants connected to the first conference bridge.

7. The method of claim 1 wherein the issuing a redirection command occurs after the threshold of connected participants is reached.

8. A computer-readable medium including computer-executable instructions facilitating performing a set of steps for creating a set of connections for a distributed conference bridge, including a first conference bridge and a physically distinct second conference bridge, joining a set of participants in a single conference, the steps including:

configuring a communications controller for an internal communications system, the configuring step comprising identifying the second conference bridge;

connecting participants to the first conference bridge until a threshold of connected participants is reached;

establishing a conference connection between the first conference bridge and the second conference bridge;

issuing a redirection command causing conference participants to be directed to the second conference bridge; and

providing a terminal abstraction, interposed between functional resources of a conference bridle application and end-devices, to provide the functional resources in a manner tailored to individual ones of a variety of user interfaces, including graphical and voice user interfaces, the terminal abstraction comprising;

a graphical user interface terminal abstraction component interposed between the functional resources and a first end-device supporting a graphical user interface, the graphical user interface terminal abstraction component transforming messages from the first end-device to a generic format expected by the functional resources, the graphical user interface terminal abstraction component further transforming messages from the functional resources to a first end-device format expected by the first end-device; and

a voice user interface terminal abstraction component interposed between the functional resources and a second end-device supporting a voice user interface, the voice user interface terminal abstraction component transforming messages from the second end-device to a generic format expected by the functional resources, the voice user interface terminal abstraction component further transforming messages from the functional resources to a second end-device format expected by the second end-device.

9. The computer-readable medium of claim 8 wherein the configuring step further comprises designating a threshold value corresponding to a number of conference participants connected to the first conference bridge.

10. The computer-readable medium of claim 8 wherein the redirection command is transmitted by a telephone system communications controller to a phone company central office.

11. The computer-readable medium of claim 10 wherein the redirection command is provided through QSIG signaling.

12. The computer-readable medium of claim 10 wherein the redirection command is provided through PINT signaling.

13. The computer-readable medium of claim 10 wherein the redirection command is provided through in-band signaling.

14. The computer-readable medium of claim 8 wherein the issuing a redirection command occurs after the threshold of connected participants is reached.

15. An extensible conference bridge system for creating a distributed conference bridge, to handle a number of callers in a single conference that exceeds a threshold number of trunk lines for a first conference bridge, by merging trunk lines supported by a second conference bridge, the conference bridge system including:

a configuration interface for identifying the second conference bridge;

a network interface component for;

connecting participants to the first conference bridge until a threshold of connected participants is reached,

establishing a conference connection between the first conference bridge and the second conference bridge, and

issuing a redirection command causing conference participants to be directed to the second conference bridge; and

a terminal abstraction, interposed between functional resources of a conference bridge application and end-devices, to provide the functional resources in a manner tailored to individual ones of a variety of user interfaces, including graphical and voice user interfaces, the terminal abstraction comprising;

a graphical user interface terminal abstraction component interposed between the functional resources and a first end-device supporting a graphical user interface, the graphical user interface terminal abstraction component transforming messages from the first end-device to a generic format expected by the functional resources, the graphical user interface terminal abstraction component further transforming messages from the functional resources to a first end-device format expected by the first end-device; and

a voice user interface terminal abstraction component interposed between the functional resources and a second end-device supporting a voice user interface, the voice user interface terminal abstraction component transforming messages from the second end-device to a generic format expected by the functional resources, the voice user interface terminal abstraction component further transforming messages from the functional resources to a second end-device format expected by the second end-device.

16. The extensible conference bridge system of claim 15 wherein the network interface component issues the redirection command to a central office switch to redirect incoming calls identifying the configurable extensible conference bridge to the second conference bridge.

17. The extensible conference bridge system of claim 15 wherein the configuration interface includes an interface component for designating a threshold value corresponding to the threshold number of trunk lines for the first conference bridge.