Detailed Description  Single V.35 Fiber Optic Modem: Provide 1pc N*64Kbit/s V.35 interface. DB25  Main Technical Indexes Optical Interface Wavelength1310nm Transmission powernot less than-10dBm Receiving sensitivitynot more than -37dBm connectionsFC V.35 Interface V.35 standard rate support, and pure 2048Kibt/s N*64Kbit/s two, users can choose their own  DTE DCE under way so it definitely choose from line-level data and the ITU-T recommendations V.35 clock