Patent ID: 8953664
Filing Date: 2015-02-10
Classification: H04M

Abstract:
1. A method for activating a digital subscriber line, comprising: sending, by a central office equipment, a sync frame period indication message to a customer premises equipment, wherein the sync frame period indication message indicates a sync frame period in at least one of a training stage and a data stage, and the sync frame period indicated by the sync frame period indication message is smaller than a specified sync frame period threshold; receiving, by the central office equipment, a reply message sent by the customer premises equipment in response to the sync frame period indication message, wherein the reply message indicates whether the customer premises equipment accepts the sync frame period indicated by the sync frame period indication message; and when the reply message indicates that the customer premises equipment accepts the sync frame period, performing, by the central office equipment, vectoring training by using a corresponding sync frame within the sync frame period; and when the reply message does not indicate that the customer premises equipment accepts the sync frame period, performing, by the central office equipment, vectoring training by using a sync frame corresponding to the specified sync frame period threshold.