... FOM consist of Standard PDH, network PDH, Optical APS PDH, Optical MODEM, Multi Service PDH, Voice PDH, PDH ... and monitoring port is provided for dumb terminal. Commander Line interface easy to configureEmbed control channel (ECC ... ------------------------------------------------------PCM4F: Fiber optical uplink , 4 line FXS/FXOPCM8F: Compact 1U PCM, Fiber optical uplink , 8 line FXS/FXOPCM8F-Eth: ...