US 6,674,729 B1 · Communications system for providing ATM connections and echo cancellation

Abstract

A method and system provides connections to an ATM system and includes selective echo cancellation. The invention includes two interworking units, an echo canceller, and a signaling processor. The signaling processor receives and processes signaling to provide connection control instructions to the interworking units. The first interworking unit will accept a connection, and if the connection does not require echo cancellation, interwork the incoming connection with an ATM connection to the ATM system. If the incoming connection requires echo cancellation, the first interworking unit will interwork the incoming connection with an ATM connection to the second interworking unit. The second interworking unit will interwork the ATM connection with another connection to echo cancellation. After echo cancellation, the second interworking unit will interwork the connection from echo cancellation with another ATM connection to the ATM system.

Claims12

Dependent claims

A method of operating a communication system comprising:

receiving a first Time Division Multiplex (TDM) communication and a first signaling message;
processing the first signaling message to determine if echo cancellation is required;
if echo cancellation is required, selecting a first identifier and a second identifier;
converting the first TDM communication into a first asynchronous communication with the first identifier;
routing the first asynchronous communication to an echo canceller based on the first identifier;
converting the first asynchronous communication into a second TDM communication;
canceling echo from the second TDM communication;
after canceling the echo, converting the second TDM communication into a second asynchronous communication with the second identifier;
and
routing the second asynchronous communication based on the second identifier.

7 more elements

Dependencies are inferred from the claim text.

Communications system for providing ATM connections and echo cancellation

Life of this patent

Communications system for providing ATM connections and echo cancellation

Life of this patent

Abstract

Claims12