... carrying E1, such as PDH, SDH, micro-wave, etc 4E1 to Ethernet Protocol ConverterE1-10/100Base-TX Protocol Converter is the ... also called Network Bridge. It changes Ethernet frame into E1 to transmit. And then it changes E1 into Ethernet frame at ... , CE, TUV, CSAConsumptionCard type (full-loaded)≤ 60WStandalone type≤ 5W. 4E1 to Ethernet Protocol Converter