Question: what is difference between e1 and ethernet communication?
Answer: The Ethernet port connect to terminal device,computer,Ethernet switch,Ethernet router etc. The device抯 E1 port connect to mail network(PDH SDH etc). ... TDM over IP (TDMOIP) is to transmit the E1 data over ethernet network. It transports the legacy E1 data through the existing Ethernet or IP network.