Patent ID: 8842983
Filing Date: 2014-09-23
Classification: H04B

Abstract:
1. A data transmission system comprising: a first link partner comprising a controller; and an optical transceiver unit; wherein when the first link partner is coupled to one terminal of the optical transceiver unit and a second link partner is not coupled to another terminal of the optical transceiver unit, the first link partner enters in an abnormal operation mode; wherein when the first link partner is in the abnormal operation mode, the controller controls the first link partner to exit from the abnormal operation mode; wherein after the first link partner exits from the abnormal operation mode, the first link partner enters into a link detection state or a response signal polling state; and wherein the first link partner enters into the link detection state to detect whether the first link partner is coupled to the terminal of the optical transceiver unit, and when the controller detects that a differential terminator impedance is present, the first link partner enters into the response signal polling state.