System and method for special call detection and billing treatment
US6415024B1 · kind B1 · utility
10Cited by
11References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1998 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Apr 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
It is desirable to be able to recognize data calls so that different charges can be applied to such calls and that vertical services, such as the use of special transmission facilities, may be offered to data callers. This recognition is accomplished by attaching a tone detector to a call in order to detect the special tones characteristic of a data call. Advantageously, this permits different charges to be imposed on data calls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.