Apparatus and method for controlling an audio conference

• US 6,839,416 B1
• Filed: 08/21/2000
• Issued: 01/04/2005
• Est. Priority Date: 08/21/2000
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Shaffer, Shmuel
• Primary Examiner(s): GAUTHIER, GERALD
• Application Number:
  US09/643,315
• Time in Patent Office: 1,597 Days
• Field of Search: 379/88.16, 379/101.01, 37920201-20701, 379259-265, 379351-356, 709/204, 345/733
• US Class Current: 379/202.01
• CPC Class Codes: H04M 3/20 with means for interrupting existing connections; with means for breaking-in on conversations
• CPC Class Codes: H04M 3/428 Arrangements for placing incoming calls on hold
• CPC Class Codes: H04M 3/4285 Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold
• CPC Class Codes: H04M 3/56 Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities video conference systems H04N7/15

Abstract

A conferencing system includes a number of devices that can participate in an audio conference using a conference bridge. Responding to a human or automated conference administrator, the bridge determines that audio content of media from a particular device is undesirable, and disables media from the particular device. If appropriate, the device receives prompts to rejoin the conference at a later time.

Claims

1. A method for controlling an audio conference, comprising:

establishing an audio conference between a plurality of devices coupled to a packet network;

determining that audio content of media from a particular device is undesirable; and

disabling the media from the particular device to terminate communication of the media from the particular device to the other devices in the audio conference;

wherein the media is communicated in packets.

2. The method of claim 1, wherein the media from the particular device comprises audio generated as a result of the particular device placing on hold a call associated with the audio conference.

3. The method of claim 1, wherein the particular device comprises a private branch exchange servicing a phone used by a conference participant, the private branch exchange operable to communicate audio when the conference participant places on hold a call associated with the audio conference.

4. The method of claim 1, wherein the audio conference comprises a meet-me conference and further comprising mixing media from the devices using a conference bridge.

5. The method of claim 1, wherein establishing an audio conference comprises:

receiving media from the devices;

mixing media from the devices to generate a plurality of mixed signals;

communicating mixed signals to the devices.

6. The method of claim 1, wherein determining comprises:

communicating a plurality of selectively mixed signals to a conference administrator device for monitoring, each selectively mixed signal excluding media from at least one of the devices; and

receiving a command from the conference administrator device to disable media from the particular device.

7. The method of claim 6, wherein the command comprises an inband dual tone multifrequency signal, a spoken command, or an out-of-band signal from an administrative link.

8. The method of claim 6, wherein the selectively mixed signals exclude media from devices having the highest average power measurement.

9. The method of claim 1, wherein determining comprises:

communicating a plurality of single source signals to a conference administrator device for monitoring, each single source signal generated by one of the devices; and

receiving a command from the conference administrator device to disable media from the particular device.

10. The method of claim 9, wherein the single source signals comprise media from devices having the highest average power measurement.

11. The method of claim 1, wherein determining comprises identifying power characteristics of media associated with the particular device as indicating a recorded audio segment or broadcast radio.

12. The method of claim 1, further comprising:

communicating a recorded prompt to the particular device, the recorded prompt inviting the particular device to rejoin the audio conference; and

receiving a command to rejoin the audio conference from the particular device.

13. The method of claim 12, wherein the command comprises an inband dual tone multifrequency signal, a spoken command, or an out-of-band signal from an administrative link.

14. The method of claim 1, further comprising enabling media from the particular device to resume communication of media from the particular device to the other devices in the audio conference.

15. A conference bridge, comprising:

a plurality of ports to communicate media with a plurality of devices in an audio conference; and

a media controller operable to determine that audio content of media from a particular device is undesirable, the media controller further operable to disable media from the particular device to terminate communication of the media from the particular device to the other devices in the audio conference;

wherein the plurality of devices are coupled to the conference bridge using a packet network and the media is communicated in packets.

16. The conference bridge of claim 15, further comprising a media processor operable to:

receive media from the devices;

mix media from the devices to generate a plurality of mixed signals; and

communicate mixed signals to the devices.

17. The conference bridge of claim 15, further comprising a gateway coupled to a selected device in the audio conference using a circuit-switched network, the gateway operable to communicate media between the conference bridge and the circuit-switched network.

18. The conference bridge of claim 15, wherein:

the ports comprise virtual ports; and

the media comprises packets of audio information.

19. The conference bridge of claim 15, wherein the media from the particular device comprises audio generated as a result of the particular device placing on hold a call associated with the audio conference.

20. The conference bridge of claim 15, wherein the particular device comprises a private branch exchange servicing a phone used by a conference participant, the private branch exchange operable to communicate audio when the conference participant places on hold a call associated with the audio conference.

21. The conference bridge of claim 15, wherein:

the conference bridge communicates a recorded prompt to the particular device, the recorded prompt inviting the particular device to rejoin the audio conference; and

the media controller receives a command to rejoin the audio conference from the particular device.

22. The conference bridge of claim 15, further comprising a memory operable to store a plurality of conference entries, each conference entry identifying the devices in the audio conference, a power measurement for each device, and a disable status of each device indicating whether media from the device is disabled.

23. The conference bridge of claim 15, further comprising enabling media from the particular device to resume communication of media from the particular device to the other devices in the audio conference.

24. Conference control software embodied in computer readable media and operable to:

establish an audio conference between a plurality of devices coupled to a packet network;

determine that audio content of media from a particular device is undesirable; and

disable the media from the particular device to terminate communication of the media from the particular device to the other devices in the audio conference;

wherein the media is communicated in packets.

25. The conference control software of claim 24, wherein the media from the particular device comprises audio generated as a result of the particular device placing on hold a call associated with the audio conference.

26. The conference control software of claim 24, wherein the particular device comprises a private branch exchange servicing a phone used by a conference participant, the private branch exchange operable to communicate audio when the conference participant places on hold a call associated with the audio conference.

27. The conference control software of claim 24, wherein the audio conference comprises a meet-me conference and further comprising mixing media from the devices using a conference bridge.

28. The conference control software of claim 24, wherein establishing an audio conference comprises:

receiving media from the devices;

mixing media from the devices to generate a plurality of mixed signals;

communicating mixed signals to the devices.

29. The conference control software of claim 24, wherein determining comprises:

communicating a plurality of selectively mixed signals to a conference administrator device for monitoring, each selectively mixed signal excluding media from at least one of the devices; and

receiving a command from the conference administrator device to disable media from the particular device.

30. The conference control software of claim 29, wherein the command comprises an inband dual tone multifrequency signal, a spoken command, or an out-of-band signal from an administrative link.

31. The conference control software of claim 29, wherein the selectively mixed signals exclude media from devices having the highest average power measurement.

32. The conference control software of claim 24, wherein determining comprises:

communicating a plurality of single source signals to a conference administrator device for monitoring, each single source signal generated by one of the devices; and

receiving a command from the conference administrator device to disable media from the particular device.

33. The conference control software of claim 32, wherein the single source signals comprise media from devices having the highest average power measurement.

34. The conference control software of claim 24, wherein determining comprises identifying power characteristics of media associated with the particular device as indicating a recorded audio segment or broadcast radio.

35. The conference control software of claim 24, further comprising:

communicating a recorded prompt to the particular device, the recorded prompt inviting the particular device to rejoin the audio conference; and

receiving a command to rejoin the audio conference from the particular device.

36. The conference control software of claim 24, further comprising enabling media from the particular device to resume communication of media from the particular device to the other devices in the audio conference.

37. A conference bridge, comprising:

means for establishing an audio conference between a plurality of devices coupled to a packet network;

means for determining that audio content of media from a particular device is undesirable; and

means for disabling the media from the particular device to terminate communication of the media from the particular device to the other devices in the audio conference;

wherein the media is communicated in packets.

38. The conference bridge of claim 37, wherein the particular device comprises a private branch exchange servicing a phone used by a conference participant, the private branch exchange operable to communicate audio when the conference participant places on hold a call associated with the audio conference.

39. The conference bridge of claim 37, wherein the means for establishing an audio conference comprises:

means for receiving media from the devices;

means for mixing media from the devices to generate a plurality of mixed signals;

means for communicating mixed signals to the devices.

40. The conference bridge of claim 37, wherein means for determining comprises:

means for communicating a plurality of selectively mixed signals to a conference administrator device for monitoring, each selectively mixed signal excluding media from at least one of the devices; and

means for receiving a command from the conference administrator device to disable media from the particular device.

41. The conference bridge of claim 37, further comprising:

communicating a recorded prompt to the particular device, the recorded prompt inviting the particular device to rejoin the audio conference; and

receiving a command to rejoin the audio conference from the particular device.

42. A method for participating in an audio conference, comprising:

communicating media to a remote location using a packet network;

receiving mixed signals from the remote location, the mixed signals comprising media from a plurality of devices in an audio conference;

terminating participation in the audio conference;

receiving a recorded prompt to rejoin the audio conference; and

communicating a command to the remote location to rejoin the audio conference;

wherein the media is communicated in packets.

43. The method of claim 42, wherein terminating participation comprises:

placing on hold a call associated with the audio conference; and

communicating audio to the remote location.

44. The method of claim 42, wherein the step of communicating audio is performed by a private branch exchange servicing a phone used by a conference participant.

45. The method of claim 42, wherein the audio conference comprises a meet-me conference.

46. A method for remotely managing an audio conference through control of a conference bridge, comprising:

participating in an audio conference established by a conference bridge coupled to a packet network;

monitoring media from a plurality of devices in the audio conference to identify audio content from a particular device that is undesirable; and

communicating a command to the conference bridge to terminate communication of the media from the particular device to the other devices in the audio conference;

wherein the media is communicated in packets.

47. The method of claim 46, wherein the command comprises an inband dual tone multifrequency signal, a spoken command, or an out-of-band signal communicated using an administrative link.

48. The method of claim 46, wherein the particular device comprises a private branch exchange servicing a phone used by a conference participant, the private branch exchange operable to communicate audio when the conference participant places on hold a call associated with the audio conference.

49. The method of claim 46, wherein monitoring comprises:

receiving a plurality of selectively mixed signals, each mixed signal excluding media from at least one of the devices;

outputting the selectively mixed signals to a conference administrator; and

receiving a selection of a desired mixed signal from the conference administrator, the desired mixed signal excluding media from the particular device.

50. The method of claim 49, wherein the selectively mixed signals exclude media from devices having the highest average power measurement.

51. The method of claim 46, wherein monitoring comprises:

receiving a plurality of single source signals, each single source signal generated by one of the devices;

outputting the single source signals to a conference administrator; and

receiving a selection of an offending single source signal from the conference administrator, the offending single source signal comprises media from the particular device.

52. The method of claim 51, wherein the single source signals comprise media from devices having the highest average power measurement.