Call queuing notification

• US 20010009546A1
• Filed: 03/08/2001
• Published: 07/26/2001
• Est. Priority Date: 02/26/1997
• Status: Active Grant

• Current Assignee: Qwest Communications International Incorporated (Lumen Technologies, Inc.)
• Original Assignee: Qwest Communications International Incorporated (Lumen Technologies, Inc.)
• Inventors: Verbil, John M., Pflum, Robert Eric
• Granted Patent: US 7,076,044 B2
• Time in Patent Office: Days
• US Class Current: 370/385
• CPC Class Codes: H04M 3/523 with call distribution or queueing
• CPC Class Codes: H04M 3/533 Voice mail systems
• CPC Class Codes: H04M 3/54 Arrangements for diverting calls for one subscriber to another predetermined subscriber based on the calling party profile H04M3/42059; based on location H04M3/42348; based on presence H04M3/42365; to voice mail H04M3/53308
• CPC Class Codes: H04Q 11/0457 Connection protocols
• CPC Class Codes: H04Q 11/0464 Primary rate access circuits
• CPC Class Codes: H04Q 2213/13093 Personal computer, PC
• CPC Class Codes: H04Q 2213/13096 Digital apparatus individually associated with a subscriber line, digital line circuits
• CPC Class Codes: H04Q 2213/13103 Memory
• CPC Class Codes: H04Q 2213/13141 Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13173 Busy signals
• CPC Class Codes: H04Q 2213/13176 Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13205 Primary rate access, PRI
• CPC Class Codes: H04Q 2213/13209 ISDN
• CPC Class Codes: H04Q 2213/13282 Call forward, follow-me, call diversion
• CPC Class Codes: H04Q 2213/13345 Intelligent networks, SCP
• CPC Class Codes: H04Q 2213/13377 Recorded announcement
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04Q 2213/13546 Intelligent Peripheral
• CPC Class Codes: H04Q 3/0029 Provisions for intelligent networking
• CPC Class Codes: H04Q 3/0037 involving call modelling techniques, e.g. modifications to the basic call state model [BCSM]
• CPC Class Codes: H04Q 3/64 : Distributing or queueing

Abstract

Call queuing is implemented in a telecommunications advanced intelligent network. After a call to a busy subscriber line in queued, a separate call to the subscriber is placed indicating status of the queued subscriber line access call. Call queuing and status notification may be accomplished with an intelligent peripheral. The subscriber notification may be made by placing a wireline call or by wireless notification, such as through a paging system.

Claims

1. A method of call queuing notification implemented in a telecommunications advanced intelligent network, the method comprising:

receiving a call to access a subscriber line;

determining that the subscriber line is busy;

placing the subscriber line access call in a queue associated with the subscriber line, the queue implemented within the telecommunications network; and

placing a separate call indicating status of the queued subscriber line access call.

2. A method of call queuing notification as in

claim 1

further comprising determining that the subscriber has requested call notification before placing the separate call indicating queued subscriber line access call status.

3. A method of call queuing notification as in

claim 1

wherein placing the separate call indicating queued subscriber line access call status is based on information about the received call.

4. A method of call queuing notification as in

claim 1

wherein the queue is maintained in an intelligent peripheral.

5. A method of call queuing notification as in

claim 4

wherein the intelligent peripheral is operative to call the subscriber and provide caller identification information.

6. A method of call queuing notification as in

claim 1

wherein the separate call indicating queued subscriber line access call status is placed through a paging system.

7. A method of call queuing notification as in

claim 1

further comprising receiving at least one command from the subscriber in response to placing the separate call indicating queued subscriber line access call status.

8. A method of call queuing notification as in

claim 7

wherein the command connects the queued call to the subscriber over a line used to place the separate call.

9. A method of call queuing notification as in

claim 7

wherein the command moves the queued call to the front of the queue.

10. A method of call queuing notification as in

claim 1

wherein the separate call is placed substantially when the call to the subscriber is queued.

11. A method of call queuing notification as in

claim 1

wherein the separate call is placed based on a length of time that the call to the subscriber is queued.

12. A method of call queuing notification as in

claim 1

wherein the separate call is placed based on a number of calls queued.

13. A system for call queue notification implemented in an Advanced Intelligent Network (AIN) having at least one central office switch and a service control point in electrical communication with a plurality of subscriber switches via a signaling network, the system comprising an intelligent peripheral in electrical communication with the central office switch and the service control point, the intelligent peripheral equipped with queuing functionality for each subscriber, the intelligent peripheral operative to place a first call to the central office switch for receipt by a subscriber having a call placed in queue, the call placed in response to a determination that a line associated with the subscriber is idle, the intelligent peripheral further operative to place a second call providing status information to the subscriber about at least one queued call.

14. A system for call queue notification as in

claim 13

wherein the intelligent peripheral is further operative to determine that the subscriber has requested call notification before placing the separate call indicating queued subscriber line access call status.

15. A system for call queue notification as in

claim 13

wherein the intelligent peripheral places the second call based on information about at least one queued call.

16. A system for call queue notification as in

claim 13

wherein the status information comprises caller identification information.

17. A system for call queue notification as in

claim 13

wherein the second call is placed through a paging system.

18. A system for call queue notification as in

claim 13

wherein the intelligent peripheral is further operative to receive at least one command from the subscriber in response to placing the second call.

19. A system for call queue notification as in

claim 18

wherein the command connects a queued call to the subscriber over a line used to place the second call.

20. A system for call queue notification as in

claim 18

wherein the command moves a queued call to the front of the queue.

21. A system for call queue notification as in

claim 13

wherein the second call is placed substantially when the call to the subscriber is queued.

22. A system for call queue notification as in

claim 13

wherein the second call is placed based on a length of time that a call to the subscriber is queued.

23. A system for call queue notification as in

claim 13

wherein the second call is placed based on a number of calls queued.

24. A method for notifying a subscriber of queued call status, the call placed from a caller to a subscriber line, the call processed by an Advanced Intelligent Network (AIN) having at least one cental office switch and a service control point (SCP) in electrical communication with a plurality of subscriber switches via a signaling network, the method comprising:

providing an intelligent peripheral in electrical communication with the at least one cental office switch and the SCP, the intelligent peripheral equipped with queuing functionality;

receiving a first call to access a subscriber line;

determining that the subscriber line is busy;

queuing the first call in the intelligent peripheral; and

placing a second call from the intelligent peripheral indicating status of the queued first call.

25. A method for notifying a subscriber of queued call status as in

claim 24

, the method further comprising:

monitoring the subscriber line to notify the SCP when the line is idle;

placing a third call from the intelligent peripheral to the subscriber in response to a determination that the subscriber line is idle;

forwarding answer supervision to the intelligent peripheral in response to the third call being answered by the subscriber; and

transferring and connecting the subscriber and the caller at the central office switch.

26. A method for notifying a subscriber of queued call status as in

claim 24

, the method further comprising:

monitoring call signaling to detect a termination attempt trigger;

launching a query at the SCP for receipt by the intelligent peripheral requesting the queue status of the subscriber line in response to the detected termination attempt trigger;

forwarding the first call to the intelligent peripheral to be added to the queue in response to a determination that the queue is active;

delivering the first call to the subscriber and setting a next event list trigger to determine the status of a subscriber line in response to a determination that the queue is empty;

connecting the first call to the subscriber line in response to a determination that the line is idle; and

forwarding the first call to the intelligent peripheral to be placed in queue in response to a determination that the subscriber line is busy.

27. A method for notifying a subscriber of queued call status as in

claim 24

wherein placing the second call is based on information about the first call.

28. A method for notifying a subscriber of queued call status as in

claim 24

wherein the second call from the intelligent peripheral indicating status of the queued first call is placed to a paging system.

29. A method for notifying a subscriber of queued call status as in

claim 24

further comprising receiving at least one command from the subscriber in response to placing the second call.

30. A method for notifying a subscriber of queued call status as in

claim 29

wherein the command connects the queued first call to the subscriber over a line used to place the second call.

31. A method for notifying a subscriber of queued call status as in

claim 29

wherein the command moves the queued first call to the front of the queue.

32. A method for notifying a subscriber of queued call status as in

claim 24

wherein the second call is placed substantially when the first call is queued.

33. A method for notifying a subscriber of queued call status as in

claim 24

wherein the second call is placed based on a length of time that the first call is queued.

34. A method for notifying a subscriber of queued call status as in

claim 24

wherein the second call is placed based on a number of calls in the queue holding the first call.

35. For use in an Advanced Intelligent Network (AIN) equipped with termination attempt trigger (TAT) capability, the AIN having at least one central office switch and a service control point (SCP) in electrical communication with a plurality of subscriber switches via a signaling network, a method of notification about queuing of a telephone call from a caller to a subscriber telephone line comprising:

providing an intelligent peripheral in electrical communication with the central office switch and the SCP, the intelligent peripheral equipped with queuing functionality for each of the subscribers;

monitoring signaling to detect a TAT trigger;

generating a first electrical signal for receipt by the SCP in response to the detected TAT trigger;

generating a second electrical signal at the SCP for receipt by the intelligent peripheral requesting status of a queue associated with the subscriber line;

generating a third electrical signal at the SCP for receipt by the subscriber switch instructing the subscriber switch to forward the call to the intelligent peripheral to be added to the queue in response to a determination that the queue is active; and

placing a call from the intelligent peripheral indicating status of the queued call.

36. The method of

claim 35

wherein the AIN is further equipped with Next Event List (NEL) functionality, the method further comprising:

generating a fourth electrical signal at the SCP for receipt by the subscriber switch instructing the subscriber switch to deliver the call to the subscriber and to set a NEL to determine the status of the subscriber line in response to a determination that the queue is empty; and

connecting the call to the subscriber line in response to a determination that the subscriber line is idle.

37. The method of

claim 35

further comprising:

generating a fifth electrical signal at the subscriber switch for receipt by the SCP in response to a determination that the subscriber line is busy;

generating a sixth electrical signal at the SCP for receipt by the subscriber switch instructing the subscriber switch to forward the call to the intelligent peripheral to be placed in the queue;

generating a seventh electrical signal at the SCP for receipt by the subscriber switch instructing the subscriber switch to set a monitor on the subscriber line and to notify the SCP when the line is idle;

generating an eighth electrical signal at the subscriber switch for receipt by the SCP in response to a determination that the subscriber line is idle;

generating a ninth electrical signal at the SCP for receipt by the intelligent peripheral instructing the intelligent peripheral to call the subscriber via the central office switch;

generating a tenth electrical signal at the central office switch for receipt by the intelligent peripheral to forward answer supervision to the intelligent peripheral in response to the call being answered by the subscriber; and

generating an eleventh electrical signal at the intelligent peripheral for receipt by the central office switch to transfer and connect the subscriber and the caller at the central office switch.