3C905-TX - Echo exchange test does not support crossover cable

Because the Echo test verifies the NIC's ability to transmit and receive data while on the network, both the echo server and the echo client must be connected to a network. An EtherLink XL NIC uses link beats to determine whether it is connected to a network when the 10BASE-T, 100BASE-TX, or 100BASE-T4 Media Type is selected. A constant link beat is needed for the Echo Exchange test when the 10BASE-T, 100BASE-TX, or 100BASE-T4 Media Type is selected. Before starting the echo test, connect the echo server and the echo client together through a hub or a switch that generates a constant link beat. Using crossover cable to connect the echo server and the echo client directly does not work.