Method and apparatus for processing call progress of a serial communication device
US6711245B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jul 3, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/66
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention includes a method and system to provide the capability of a serial based analog modem to play its connection call progress in a digital format, thus eliminating the need for analog to digital conversion at the host. In one aspect of the invention, an exemplary method includes receiving data at the serial communication device, from a serial communication network; identifying the data as call progress audio samples; transmitting the call progress audio samples to the host through the serial interface, the serial interface carrying serial data or call progress audio samples; and playing the call progress audio samples at the audio system of the host. Other methods and apparatuses are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.