电话网络modems-V。92 IRDA物理层 USB物理层 EIARS-232,EIA-422,EIA-423,RS-449,RS-485 Ethernet physical layerIncluding10BASE-T,10BASE2,10BASE5,100BASE-TX,100BASE-FX。100BASE-T,1000BASE-T,1000BASE-SX还有其他类型 Varieties of802。11Wi-Fi物理层 DSL ISDN T1 and otherT-carrierlinks, and E1 and otherE-carrierlinks SONET/SDH Optical Transport Network(OTN) GSMUm air interface物理层 Bluetooth物理层 ITURecommendations: seeITU-T IEEE 1394 interface TransferJet物理层 Etherloop ARINC 818航空电子数字视频总线 G。hn/G。9960物理层 CAN bus(controller area network)物理层