... Price, 3 year warranty, 7X24 fom family pdh fiber optical multiplexer FOM is HWATEL Corp PDH optical ... Modular PDH and Network Management System 7 serial over 30 models of device. All of PDH are ... poll support up to 224 E1Services supported: E1, Ethernet, FXS, FXO, V.35, V.24, RS-232, lease line ... range from 1 Km to 120 KmOptional secondary fiber optical link provides 1+1 automatic backupSupport single ...