Patent ID: 6055245
Filing Date: 2000-04-25
Classification: H04Q

Abstract:
In a terminal adapter for facilitating interaction during a communication session between an analog modem and an Integrated Services Digital Network (ISDN), an apparatus for digitally conveying digital alert tones between said analog modem and said terminal adapter comprising:(a) modem controller access means electrically coupled with a modem controller for receiving modem control data therefrom in digital form, said modem control data being comprised of both said digital alert tones including at least DTMF tones, and information requiring modulation transformation for propagation over said ISDN;(b) data evaluating means electrically coupled with said modem controller access means to scan said modem control data and identify said digital alert tones; and(c) terminal adapter controller access means electrically coupled both with said data evaluating means and a terminal adapter controller of said terminal adapter for relaying said digital alert tones to said terminal adapter in digital form as generated by said modem controller.