Patent ID: 8320411

Claim:
A method of signaling along a link between respective Ethernet transceivers, the method comprising: performing a pre-defined full training sequence to train a set of link parameters associated with the Ethernet transceivers, the full training sequence including a plurality of steps including transmission of a first DSQ128 training signal; transmitting operational data along the link based on the trained link parameters; detecting a link condition preventing operational data transmission above a threshold criteria; re-training the link in response to the detecting, the re-training having a sequence of steps fewer in number than the full training plurality of steps, the re-training comprising: exchanging a first PAM-2 training signal between the transceivers; exchanging a second PAM-2 training signal encoded in accordance with a Tomlinson-Harashima Precoding (THP) type of encoding; and exchanging a second DSQ128 training signal.