Patent ID: 6473427
Filing Date: 2002-10-29
Classification: H04L,H04Q

Abstract:
An asynchronous transfer mode (ATM) based very-high-bit-rate digital subscriber line (VDSL) communication system for connecting a subscriber between different data service providers, the ATM based VDSL communication system comprising:an ATM network connected to a plurality of data service providers; a host digital terminal connected to the ATM network by one of a plurality of ATM permanent virtual circuits, each of the ATM permanent virtual circuits associated with a corresponding one of the plurality of data service providers, wherein the plurality of ATM permanent virtual circuits connect the host digital terminal to the plurality of data service providers; and a data device connected to the host digital terminal by a VDSL permanent virtual circuit, the VDSL permanent virtual circuit being supported on at least a twisted pair drop between the host digital terminal and the data device, wherein the data device is operable to generate a channel change signal corresponding to a selected one of the plurality of data service providers; wherein the host digital terminal, in response to the channel change signal, connects the ATM permanent virtual circuit associated with the selected one of the data service providers with the VDSL permanent virtual circuit to establish a system permanent virtual circuit (PVC) connecting the selected one of the data service providers with the data device, wherein the selected one of the data service providers and the data device communicate data signals on the system PVC; wherein the host digital terminal, upon receiving another channel change signal corresponding to a second data service provider, disconnects the VDSL permanent virtual circuit from the ATM permanent virtual circuit associated with the current one of the plurality of data service providers and connects the VDSL permanent virtual circuit with the ATM permanent virtual circuit associated with the second data service provider to establish a second system PVC.