Exchange service starting system
US5774538A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1995 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Sep 26, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13405
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An exchange service starting system subject to a minimum of processing burdens without limiting the scope of exchange services available to subscribers. A number dialed by a subscriber placing a call is analyzed by a number analyzing unit. The result of analysis is stored into a number analysis result memory. Upon receipt of a service start request signal from the subscriber during the call, a signal analyzing unit references the content of the memory. If the memory is found to contain a predetermined specific number, the signal analyzing unit starts a signal output unit to output the service start request signal to a specific exchange. If the memory content is other than the specific number, the signal analyzing unit starts a service request processing unit so that the exchange in question will offer a locally available exchange service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.