Method of processing cellular telephone call detail data for billing multi-line customers for cellular telephone services
US4979207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1990 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Feb 1, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/7478
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A unique cellular telephone billing system (100) processes call detail records (102) of cellular telephone calls made by users of multi-line customers to produce invoices and reports. The call detail records (301 and 302) for each user of a multi-line customer include a unique key identification number (311 and 321) and may include an information format (401 and 402) having variable-length sub-fields (411-415 and 421-423). Call detail records (102) with key identification numbers are pooled into files (110) and then sorted for each multi-line customer by key identification number and corresponding information format to produce consolidated billing and usage information for all of the cellular telephones as well as individual invoices for each of user-employee of each multi-line customer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.