Transmitting data streams involves determining transmission line parameters and re-adapting echo elimination using user and exchange side transmitter/receiver devices and signals

摘要

The method involves determining transmission line parameters using an exchange side transmitter/receiver device, determining transmission line parameters using a user side transmitter/receiver device, re-adapting echo elimination using a user side transmitter/receiver device and re-adapting echo elimination using an exchange side transmitter/receiver device. The method involves determining transmission line parameters using an exchange side transmitter/receiver device (LTU) after providing a user side transmission signal, determining transmission line parameters using a user side transmitter/receiver device (NTU) after providing an exchange side transmission signal, re-adapting echo elimination using a user side transmitter/receiver device after providing a user side transmission signal and re-adapting echo elimination using an exchange side transmitter/receiver device after providing an exchange side transmission signal.