Claims
- 1. A method of identifying lost callers for call attempts directed to a telecommunications service center having a customer premises equipment, wherein said method comprises the steps of:
- generating billing records for a plurality of calls received by the customer premises equipment, wherein at least a portion of said billing records include fields selected from a group of such fields comprised of originating telephone number, date, time and disposition of a respective received call;
- merging said billing records with records of unsuccessful call attempts directed at said telecommunications service center and initiated within a predetermined time period, wherein at least a portion of said unsuccessful call attempt records include fields selected from a group of such fields comprised of originating telephone number, date, time and disposition of a respective attempted call;
- sorting the merged records in ascending order by originating telephone number, time and date to derive a sequence of merged and sorted records for each originating telephone number; and
- classifying a particular sequence of merged and sorted records as a lost caller if a last record in said sequence of merged and sorted records indicates one of the following call dispositions: a) busy line condition, b) ring-no-answer condition, and c) abandoned in queue condition.
- 2. A system of identifying lost callers for call attempts directed to a telecommunications service center having a customer premises equipment, wherein said system comprises:
- means for generating billing records for a plurality of calls received by the customer premises equipment, each one of said billing records including fields selected from a group of such fields comprised of originating telephone number, date, time and disposition of a respective received call;
- means for merging said billing records with records of unsuccessful call attempts directed at said telecommunications service center and initiated within a predetermined time period, each one of said unsuccessful call attempts records including fields selected from a group of such fields comprised of originating telephone number, date, time and disposition of a respective attempted call;
- means for sorting the merged records in ascending order by originating telephone number, time and date to derive a sequence of merged and sorted records for each originating telephone number; and
- means for classifying a particular sequence of merged and sorted records as a lost caller if a last record in said sequence of merged and sorted records indicates one of the following call dispositions: a) busy line condition, b) ring-no-answer condition, and c) abandoned in queue condition.
Parent Case Info
This is a continuation of application Ser. No. 08/085,225 filed Jun. 30, 1993, now abandoned.
US Referenced Citations (14)
Foreign Referenced Citations (2)
Number |
Date |
Country |
58-225762 |
Dec 1983 |
JPX |
3-203449 |
Sep 1991 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
85225 |
Jun 1993 |
|