Method and system for managing call requests in a limited bandwidth environment

• US 7,065,203 B1
• Filed: 05/07/2001
• Issued: 06/20/2006
• Est. Priority Date: 05/07/2001
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Knappe, Michael E, Surazski, Luke K, Huart, Pascal H
• Primary Examiner(s): Hong, Harry S.
• Application Number:
  US09/850,656
• Time in Patent Office: 1,870 Days
• Field of Search: 37926501-2661
• US Class Current: 379/266.06
• CPC Class Codes: H04Q 3/0062 Provisions for network management

Abstract

According to one embodiment of the invention, a method for managing call requests in a limited bandwidth environment includes receiving a call request from a user, determining if a voice channel on a communication link is available for the call request, and providing a feedback signal for the user indicating when a voice channel will be available.

Claims

1. A method for managing call requests, comprising:

monitoring a communication link between a plurality of first communication devices and a plurality of second communication devices;

detecting a call request from a first one of the first communication devices directly to a first one of the second communication devices;

determining that insufficient communication link bandwidth is available to establish a voice connection on a voice channel of the communication link between the first one of the first communication devices and the first one of the second communication devices;

maintaining the call request in a pending state; and

providing a feedback signal to the first one of the first communication devices, the feedback signal indicating that insufficient communication link bandwidth is available to establish the voice connection.

2. The method of claim 1, further comprising:

determining an estimated wait time for the first one of the first communication devices for sufficient communication link bandwidth to become available to establish the voice connection; and

notifying the first one of the first communication devices of the estimated wait time.

3. The method of claim 2, further comprising:

associating a priority with the call request;

queuing the call request in a queue based on the priority;

determining when sufficient communication link bandwidth becomes available to establish the voice connection; and

notifying the user that the voice channel is available when the first one of the first communication devices has a highest priority and sufficient communication link bandwidth has become available to establish the voice connection.

4. The method of claim 3, further comprising connecting the pending call request when the first one of the first communication devices has the highest priority and sufficient communication link bandwidth becomes available to establish the voice connection.

5. The method of claim 1, wherein the call request is for a pre-empting call, further comprising:

disconnecting an on-going call from an in-use voice channel to achieve sufficient bandwidth on a communications link to establish the voice connection; and

establishing the voice connection for the pre-empting call.

6. The method of claim 5, further comprising notifying a user of the on-going call that the pre-empting call has been placed.

7. The method of claim 5, further comprising queuing the on-going call in response to a queue request from a user of the on-going call.

8. The method of claim 2, wherein notifying the first one of the first communication devices of the estimated wait time comprises sending a signal operable to visually notify a user of the first one of the first communication devices of the estimated wait time using a visual display unit.

9. The method of claim 2, wherein notifying the first one of the first communication devices of the estimated wait time comprises sending a signal operable to audibly notify a user of the first one of the first communication devices of the estimated wait time using an interactive voice response system.

34. The method of claim 1, wherein determining that insufficient communication link bandwidth is available to establish a voice connection comprises determining that insufficient IP bandwidth is available to establish the voice connection.

35. The method of claim 3, wherein associating a priority with the call request comprises associating a priority with the call request based on an identity of a user of the first one of the first communication devices.

10. Software for managing call requests, the software embodied in a computer readable medium and, when executed by a computer, operable to

monitor a communication link between a plurality of first communication devices and a plurality of second communication devices;

detect a call request from a first one of the first communication devices directly to a first one of the second communication devices;

determine that insufficient communication link bandwidth is available to establish a voice connection on a voice channel of the communication link between the first one of the first communication devices and the first one of the second communication devices;

maintain the call request in a pending state; and

provide a feedback signal to the first one of the first communication devices, the feedback signal indicating that insufficient communication link bandwidth is available to establish the voice connection.

11. The software of claim 10, further operable to:

determine an estimated wait time for the first one of the first communication devices for sufficient communication link bandwidth to become available to establish the voice connection; and

notify the first one of the first communication devices of the estimated wait time.

12. The software of claim 11, further operable to:

associate a priority with the call request;

queue the call request in a queue based on the priority;

determine when sufficient communication link bandwidth becomes available to establish the voice connection; and

notify the first one of the first communication devices that the voice channel is available when the first one of the first communication devices has a highest priority and sufficient communication link bandwidth has become available to establish the voice connection.

13. The software of claim 12, further operable to connect the pending call request when the first one of the first communication devices has the highest priority and sufficient communication link bandwidth becomes available to establish the voice connection.

14. The software of claim 10, further operable to:

disconnect an on-going call from an in-use voice channel to achieve sufficient bandwidth on a communications link to establish the voice connection; and

establish the voice connection for a pre-empting call.

15. The software of claim 14, further operable to notify a user of the on-going call that the pre-empting call has been placed.

16. The software of claim 14, further operable to queue the on-going call in response to a queue request from a user of the on-going call.

17. The software of claim 11, further operable to visually notify a user of the first one of the first communication devices of the estimated wait time using a visual display unit.

18. The software of claim 11, further operable to audibly notify a user of the first one of the first communication devices of the estimated wait time using an interactive voice response system.

19. A system for managing call requests, comprising:

means for monitoring a communication link between a plurality of first communication devices and a plurality of second communication devices;

means for detecting a call request from a first one of the first communication devices directly to a first one of the second communication devices;

means for determining that insufficient communication link bandwidth is available to establish a voice connection on a voice channel of the communication link between the first one of the first communication devices and the first one of the second communication devices;

means for maintaining the call request in a pending state; and

means for providing a feedback signal to the first one of the first communication devices, the feedback signal indicating that insufficient communication link bandwidth is available to establish the voice connection.

20. The system of claim 19, further comprising:

means for determining an estimated wait time for the first one of the first communication devices for sufficient communication link bandwidth to become available to establish the voice connection; and

means for notifying the first one of the first communication devices of the estimated wait time.

21. The system of claim 20, further comprising:

means for associating a priority with the call request;

means for queuing the call request in a queue based on the priority;

means for determining when sufficient communication link bandwidth becomes available to establish the voice connection; and

means for notifying the user that the voice channel is available when the first one of the first communication devices has a highest priority and sufficient communication link bandwidth has become available to establish the voice connection.

22. The system of claim 21, further comprising means for connecting the pending call request when the first one of the first communication devices has the highest priority and sufficient communication link bandwidth becomes available to establish the voice connection.

23. The system of claim 19, wherein the call request is for a pre-empting call, further comprising:

means for disconnecting an on-going call from an in-use voice channel to achieve sufficient bandwidth on a communications link to establish the voice connection; and

means for establishing the voice connection for the pre-empting call.

24. The system of claim 23, further comprising means for notifying a user of the on-going call that the pre-empting call has been placed.

25. The system of claim 23, further comprising means for queuing the on-going call in response to a queue request from a user of the on-going call.

26. The system of claim 20, wherein means for notifying the first one of the first communication devices of the estimated wait time comprises sending a signal operable to visually notify a user of the first one of the first communication devices of the estimated wait time using a visual display unit.

27. The system of claim 20, wherein means for notifying the first one of the first communication devices of the estimated wait time comprises sending a signal operable to audibly a user of the first one of the first communication devices of the estimated wait time using an interactive voice response system.

28. A method for managing call requests, comprising:

monitoring a communication link between a plurality of first communication devices and a plurality of second communication devices;

detecting a call request from a first one of the first communication devices directly to a first one of the second communication devices;

determining if sufficient communication link bandwidth is available to establish a voice connection on a voice channel of the communication link between the first one of the first communication devices and the first one of the second communication devices;

determining an estimated wait time for the first one of first communication devices when sufficient communication link bandwidth is not available;

notifying the first one of the first communication devices of the estimated wait time;

associating a priority with the call request;

maintaining the call request in a pending state; and

queuing the call request in a queue based on the priority.

29. The method of claim 28, further comprising:

determining when sufficient communication link bandwidth becomes available;

notifying the first one of the first communication devices that sufficient communication link bandwidth is available when the first one of the first communication devices has a highest priority and sufficient communication link bandwidth is available; and

connecting the call request over the communication link in response to a connect request from the first one of the first communication devices when the first one of the first communication devices has the highest priority and sufficient communication link bandwidth is available.

30. The method of claim 28, wherein notifying the first one of the first communication devices of the estimated wait time comprises visually notifying a user of the first one of the first communication devices of the estimated wait time using a visual display unit.

31. Software for managing call requests, the software embodied in a computer readable medium and, when executed by a computer, operable to

monitor a communication link between a plurality of first communication devices and a plurality of second communication devices;

detect a call request from a first one of the first communication devices directly to a first one of the second communication devices;

determine if sufficient communication link bandwidth is available to establish a voice connection on a voice channel of the communication link between the first one of the first communication devices and the first one of the second communication devices;

determine an estimated wait time for the first one of the first communication devices when sufficient communication link bandwidth is not available;

notify the first one of the first communication devices of the estimated wait time;

associate a priority with the call request;

maintain the call request in a pending state; and

queue the call request in a queue based on the priority.

32. The software of claim 31, further operable to:

determining when sufficient communication link bandwidth becomes available;

notifying the first one of the first communication devices that sufficient communication link bandwidth is available when the first one of the first communication devices has a highest priority and sufficient communication link bandwidth is available; and

connecting the call request over the communication link in response to a connect request from the first one of the first communication devices when the first one of the first communication devices has the highest priority and sufficient communication link bandwidth is available.

33. The software of claim 31, further operable to visually notify a user of the first one of the first communication devices of the estimated wait time using a visual display unit.