Patent · US Expired

Technique of controlling telephone calls

US5809110A · kind A · utility

11Cited by

7References

10Claims

0Family size

Assignee

Dialogic Corporation · CA

Inventors

Mark Ulrich · New London, US
Prabhakar R. Chitrapu · Blue Bell, US

Key dates

Filing date	Jan 31, 1996
Grant date	Sep 15, 1998
Priority date	—
Expiry date	Jan 31, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH04M11/06
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An improved system for minimizing toll charges is disclosed wherein line quality is measured and a call is terminated if the line quality is not at an acceptable level to allow for the highest possible bit rates during data transfer or to guarantee a certain minimum degree of quality.

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