Modem with ring detection/modem processing capability
US6289087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/911
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A modem which connects to a data terminal is connected to a telephone line capable of supporting multiple directory numbers with each number having a distinctive ring signal. The modem comprises a ring detector which indicates the presence of a ring signal associated with an incoming call from a remote device. The modem also includes a datapump unit capable of processing analog signals associated with a telephone line and digital data associated with the data terminal. A modem controller determines ring type from the ring signal of the incoming telephone call and alters the processing of the incoming telephone call based on the ring type. To that end, the controller may alter the processing of the incoming telephone call by configuring the datapump unit and/or configuring a controller compression/error-correction module based on the ring type before the incoming telephone call is answered. Further, the controller may direct the routing of the incoming telephone call via the data terminal based on the ring type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.