System and method for an improved predictive dialer

• US 5,570,419 A
• Filed: 10/13/1995
• Issued: 10/29/1996
• Est. Priority Date: 10/13/1995
• Status: Expired due to Term

• Current Assignee: Intervoice Limited Partnership
• Original Assignee: Intervoice Limited Partnership
• Inventors: Zimmer, Christopher P., Cave, Ellis K., Ammann, Larry P.
• Primary Examiner(s): Zele, Krista M.
• Assistant Examiner(s): Hong, Harry S.
• Application Number:
  US08/543,010
• Time in Patent Office: 382 Days
• Field of Search: 379/113, 379/133, 379/134, 379/265, 379/266, 379/309, 379/216
• US Class Current: 379/266.08
• CPC Class Codes: H04M 3/5158 in combination with automated outdialling systems devices for signalling identity of wanted subscriber H04M1/26

Abstract

There is disclosed a system and method for controlling the call placement rates of a predictive dialer telephone system in which outbound calls are automatically placed in anticipation of telephone agents becoming available. The system allows a system supervisor to specify target values of agent utilization, customer hold time, and drop rate for the system. The system then paces outbound telephone calls to maintain the specified parameter as close as possible to the target value specified by the system supervisor.

Claims

1. A call pacing system for initiating outbound telephone calls on a plurality of telephone lines coupled to an automated telephone system, said telephone calls to be handled by one or more telephone agents connected to said telephone system, said call pacing system comprising:

predictive dialing circuitry for initiating outbound calls from said telephone system according to a call pacing delay;

computer input means for receiving a target value for a first parameter selected from a plurality of operating parameters of said telephone system;

monitoring circuitry for measuring said plurality of operating parameters;

a control processor coupled to said computer input means and said monitoring circuitry for calculating and updating a plurality of averages of said operating parameters, and comparing a selected one of said averages corresponding to said first parameter to said target value in order to detect a difference between said selected average and said target value, said comparing occurring substantially concurrent with said measuring Said plurality of operating parameters; and

adjustment means coupled to said predictive dialing circuitry and said control processor for increasing or decreasing said call pacing delay, wherein said adjustment means increases or decreases said call pacing delay so as to decrease the detected difference between said selected average and said target value.

2. The call pacing delay system as set forth in claim 1 wherein said first parameter is customer hold time, said customer hold time defined as a length of time said telephone system places a customer on hold whenever an outbound call is completed to said customer before one of said agents is available to handle said completed call.

3. The call pacing delay system as set forth in claim 2 wherein an average of customer hold time calculated by said control processor is an exponentially weighted average.

4. The call pacing delay system as set forth in claim 1 wherein said first parameter is drop rate, said drop rate defined as a rate at which completed outbound calls to customers on hold are dropped by said customers on hold or by said telephone system.

5. The call pacing delay system as set forth in claim 4 wherein an average of drop rate calculated by said control processor is an exponentially weighted average.

6. The call pacing delay system as set forth in claim 1 wherein said first parameter is agent utilization said agent utilization defined as a proportion of time during which said agents are actively handling calls.

7. The call pacing delay system as set forth in claim 6 wherein an average of agent utilization calculated by said control processor is an exponentially weighted average.

8. A method of controlling a predictive dialer placing outbound telephone calls on a plurality of telephone lines coupled to an automated telephone system, the telephone calls to be handled by a plurality of agents connected to the telephone system, the method comprising the steps of:

setting a target value for a first parameter selected from a plurality of operating parameters of the telephone system;

measuring the plurality of operating parameters of the telephone system;

calculating and updating a plurality of averages of the measured operating parameters;

comparing the target value with a corresponding one of the measured operating parameter averages in order to determine a difference, said comparing occurring substantially concurrent with said measuring said plurality of operating parameters; and

adjusting a call pacing value in order to decrease the difference between the target value and the corresponding measured operating parameter average, wherein the call pacing value increases or decreases the rate at which the predictive dialer places outbound calls.

9. The method as set forth in claim 8 wherein the first parameter is a customer hold time, the customer hold time defined as a length of time the telephone system places a customer on hold whenever an outbound call is completed to the customer before one of the agents is available to handle the completed call.

10. The method as set forth in claim 9 wherein an average of customer hold time calculated in the step of calculating and updating is an exponentially weighted average.

11. The method as set forth in claim 8 wherein the first parameter is a drop rate, the drop rate defined as a rate at which completed outbound calls to customers on hold are dropped by the customers on hold or by the telephone system.

12. The method as set forth in claim 11 wherein an average of drop rate calculated in the step of calculating and updating is an exponentially weighted average.

13. The method as set forth in claim 8 wherein the first parameter is an agent utilization, the agent utilization defined as a proportion of time during which the agents are actively handling calls.

14. The method as set forth in claim 13 wherein an average of agent utilization calculated in the step of calculating and updating is an exponentially weighted average.