Patent ID: 7317754

Claim:
A method of controlling at least one line rate corresponding to communication in a first direction over a line coupling a first digital subscriber line modem located in a central office and a second digital subscriber line modem located at a customer's premises together, the method comprising: establishing a communications session including communication in said first direction between said first modem and said second modem at a first line rate as a function of a first signal noise measurement, said step of establishing a communications session including performing a synchronization operation to synchronize communication between said first modem and said second modem in said first direction; making a second signal noise measurement; generating as a function of said second signal noise measurement, a second signal noise measurement value; comparing said second signal noise measurement value to a first rate adjustment threshold; and changing said at least one line rate as a function of the result of said comparison of said second signal noise measurement value to said first rate adjustment threshold, when said second signal noise measurement value differs from said first rate adjustment threshold in a pre-selected manner, without performing a resynchronization operation.