Patent · US Active

System and method for universal adaptation of a PSTN modem

US7796740B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

VTECH TELECOMMUNICATIONS LIMITED · CN

Inventor

Gary Rogalski

Key dates

Filing date	Jan 10, 2006
Grant date	Sep 14, 2010
Priority date	—
Expiry date	Jul 17, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04M11/066
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A modem adapter is provided to adapt a modem to operate with a telephone system. The modem adapter includes a conductor detector, a voltage generator, and a dial-tone generator. The conductor detector is configured to detect live conductors on a telephone jack. The voltage generator is configured to generate an on-hook line voltage comparable to that normally expected by the modem and to deliver the generated on-hook line voltage to the modem. The dial-tone generator is configured to generate and deliver to the modem a first dial tone different from the second dial tone delivered by a telephone system to which the modem is attempting communication. A method for adapting a modem to a telephone system is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.