... data ♦ optical port card (HDLC)3). EOP(Ethernet Over SDH) protocol converter is used to transmit transparently Ethernet data, the maximum ... is up to 31.68Mb/s. adapt the international standard protocol(G.7041,G.7042,G.7043,G.8040), then the ... . 3 Three features of EOP1. The convergent-type protocol converterIntegrate switching and traditional protocol conversion together in two layers, and the interface ...