Skills-based automatic call distribution system

• US 6,130,942 A
• Filed: 10/30/1998
• Issued: 10/10/2000
• Est. Priority Date: 10/30/1998
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Stenlund, Bo
• Primary Examiner(s): Zele, Krista
• Assistant Examiner(s): Deane, Jr., William J.
• Application Number:
  US09/183,324
• Time in Patent Office: 711 Days
• Field of Search: 379/265, 379/266, 379/309
• US Class Current: 379/265.12
• CPC Class Codes: H04M 3/5233 Operator skill based call distribution
• CPC Class Codes: H04M 3/5238 with waiting time or load prediction arrangements

Abstract

A skills based telephone call distribution system is disclosed. The system determines the informational needs of an incoming caller and defines a set of skills an agent should possess to serve the caller. A search is performed for an available agent possessing the skill set. Upon the search failing to locate an available agent possessing the skill set, the amount of time the caller may expect to wait therefor is estimated. The estimated time is compared to a maximum waiting time. If the estimated time is greater than the maximum waiting time, then the skill set is redefined to include a greater number of agents who may serve the caller. A new search is performed for an available agent possessing the redefined skill set.

Claims

1. A method for distributing a telephone call to an agent in a skills-based call system, said method comprising the steps of:

determining the informational needs of a caller associated with the telephone call;

defining a skill set an agent must possess in order to serve the caller based upon the determined informational needs thereof;

searching for an available agent possessing the defined skill set;

estimating a time during which the caller is expected to wait before the available agent possessing the defined skill set is found, in response to an available agent not being found during the step of searching;

comparing the estimated waiting time for the caller with a predetermined maximum waiting time;

redefining the defined skill set an agent must possess in order to serve the caller, in response to the estimated waiting time being greater than the maximum waiting time during the step of comparing;

searching for any available agent possessing the redefined skill set; and

connecting the caller to an available agent in response to an available agent possessing the redefined skill set being identified.

2. The method of claim 1, wherein:

the redefined skill set defines that a qualified agent possess less skills than the skills defined by a qualified agent in the skill set as originally defined in the step of defining.

3. The method of claim 1, wherein:

the skill set comprises a listing of specific skills that an agent possess in order to serve the caller.

4. The method of claim 1, further including the step of:

placing the caller in a queue in response to a determination that the estimated waiting time is less than the maximum waiting time during the step of comparing.

5. The method of claim 4, further including the step of:

monitoring an actual waiting time during which the caller is in the queue.

6. The method of claim 5, further including the steps of:

comparing the actual waiting time to the maximum waiting time;

redefining the skill set upon an affirmative determination that the actual waiting time exceeds the maximum waiting time during the step of comparing the actual waiting time; and

searching for any available agent possessing the redefined skill set based upon the affirmative determination that the actual waiting time exceeds the maximum waiting time.

7. The method of claim 6, further including the step of:

determining whether the skill set may be redefined following the step of comparing the actual waiting time to the maximum waiting time.

8. The method of claim 6, further including the steps of:

connecting the caller to an available agent identified during the step of searching for any available agent possessing the redefined skill set based upon the affirmative determination that the actual waiting time exceeds the maximum waiting time.

9. The method of claim 1, wherein:

the steps of defining and redefining the skill set are performed for each caller to the skills-based call system.

10. The method of claim 9, wherein:

the steps of defining and redefining a skill set are performed for a caller to the system substantially independently of the steps of defining and redefining the skill set performed for other callers to the skills-based system.

11. The system of claim 1, further comprising the step of:

following the step of searching for any available agent having the redefined skill set and in response to there being no available agent having the redefined skill set, repeating the steps of estimating, comparing and redefining until an occurrence of one of the estimated waiting time being less than the maximum waiting time and an available agent having the redefined skill set is found.

12. A system for distributing a telephone call in a telephone call distribution system, comprising:

defining means for defining a set of skills an agent must possess in order to serve a caller associated with the telephone call;

a means for searching for an available agent in the system possessing the defined skill set;

a means for estimating a time during which the caller is expected to wait before an agent possessing the defined skill set is available, in response to an available agent not being found by the means for searching;

a means for comparing the estimated waiting time for the caller with a predefined maximum waiting time;

a means for redefining the defined skill set an agent must possess in order to serve the caller, in response to the estimated waiting time being greater than the maximum waiting time;

a means for searching for any available agent in the system possessing the redefined skill set; and

a means for connecting the caller to an available agent possessing the redefined skill set in response to an agent being identified by the means for searching for any agent possessing the redefined skill set.

13. The system of claim 12, further including:

a means for placing the caller in a queue in response to the estimated waiting time for the caller being less than the maximum waiting time.

14. The system of claim 13, further including:

a means for monitoring an amount of time the caller is in the queue.

15. The system of claim 14, further including:

a means for comparing the amount of time the caller is in the queue with the maximum waiting time;

a means for redefining the skill set upon an affirmative determination that the amount of time the caller is in the queue is greater than the maximum waiting time; and

a means for searching for any available agent in the system possessing the redefined skill set.

16. The system of claim 15, further including:

a means for connecting the caller to an available agent possessing the redefined skill set based upon the available agent being identified by the means for searching for any available agent possessing the redefined skill set.

17. The system of claim 12, wherein:

the means for estimating a time period includes a means for calculating a percentage of callers in the queue served by agents possessing the defined skill set relative to a total number of callers served thereby.

18. The system of claim 17, wherein:

the means for calculating a percentage of callers includes a means for calculating a percentage of occupancy of the queue.

19. The system of claim 12, wherein:

the means for defining and the means for redefining respectively define and redefine a skill set for each caller to the telephone call distribution system.

20. The system of claim 19, wherein:

the skill set for each caller is defined and redefined substantially independently from the skill set corresponding to other callers to the telephone call distribution system.

21. In an automatic call distribution system, a method of handling an incoming telephone call, comprising the steps of:

initially defining a skill set for an agent qualified to serve a caller;

determining an average time delay for the caller associated with the incoming telephone call to be connected to a qualified agent based upon a position of the caller in a queue of callers waiting for one of a number of qualified agents;

determining the number of qualified agents who serve callers in the queue and are presently serving other callers;

calculating the percentage of callers in the queue served by the qualified agents relative to the total number of callers served by the qualified agents over a predetermined period of time;

calculating a first time delay based upon the number of qualified agents and upon the percentage of callers served thereby;

subtracting the first time delay from the average time delay to obtain an estimated waiting time delay;

comparing the estimated waiting time delay to a predetermined maximum caller waiting time delay; and

redefining the skill set for the agent qualified to serve the caller based upon an affirmative determination that the estimated waiting time delay is greater than the maximum caller waiting time delay; and

placing the caller in the queue of callers based upon the estimated waiting time delay value.

22. The method of claim 21, wherein:

the step of calculating the first time delay includes the step of multiplying the number of qualified agents by the percentage of callers served thereby to obtain a first product.

23. The method of claim 22, wherein:

the step of calculating the first time delay includes the step of dividing the waiting time for a caller positioned at the top of the queue by the first product to obtain the first time delay.

24. The method of claim 21, further including the steps of:

initially defining a skill set for the an agent qualified to serve the caller; and

comparing the estimated waiting time delay to a predetermined maximum caller waiting time delay;

wherein the caller is placed in the queue during the placing step in response to an affirmative determination that the estimated waiting time delay is less than the maximum caller waiting time delay.

25. The method of claim 21, wherein:

the step of calculating the percentage of callers includes the step of determining the percentage of occupancy of the queue over the predetermined period of time.

26. A computer program product including a computer readable medium having computer readable program code means embodied thereon, for an automatic call distribution system, the computer program product comprising:

first computer readable program code means for defining a skill set an agent must possess in order to serve a caller, based upon the particular needs of the caller;

second computer readable program code means for searching the automatic call distribution system for an available agent possessing the defined skill set;

third computer readable program code means, responsive to the second computer readable program code means, for estimating a time period during which the caller is expected to wait before being served by an agent having the defined skill set;

fourth computer readable program code means for comparing the estimated waiting time period to a maximum caller waiting time period; and

fifth computer readable program code means for placing the caller in a queue of callers to be served by at least one agent having the defined skill set, in response to the estimated waiting time period being less than the maximum caller waiting time period; and

sixth computer readable program code means for redefining the skill set based upon a determination that the estimated waiting period is greater than the maximum caller waiting time period.

27. The computer program product of claim 26, further including:

seventh computer readable program code means for searching the system for any available agent possessing the redefined skill set.

28. The computer program product of claim 27, further including:

eighth computer readable program code means for connecting the caller to an available agent identified by the seventh computer readable program code means.

29. The computer program product of claim 26, further including:

sixth computer readable program code means for monitoring an amount of time the caller is in the queue;

seventh computer readable program code means for comparing the amount of time the caller is in the queue with the maximum caller waiting time period;

eighth computer readable program code means for redefining the skill set based upon a determination by the seventh computer readable program code means that the amount of time the caller is in the queue exceeds the maximum caller waiting time period; and

ninth computer readable program code means for searching for an available agent having the redefined skill set redefined by the eighth computer readable program code means.

30. The computer program product of claim 26, wherein:

the third computer readable program code means includes a sixth computer readable program code means for calculating a percentage of callers in the queue served by agents possessing the skill set relative to the total number of callers served thereby.

31. The computer program product of claim 30, wherein:

the sixth computer readable program code means includes a seventh computer readable program code means for determining a percentage of occupancy of the queue by one or more callers.