... ,Moblie ,Unicom, other Network Operator and Post,Electric power ,Police Petroleum and other pivate network .Product Features1.supply main optical ... ,Moblie ,Unicom, other Network Operator and Post,Electric power ,Police Petroleum and other pivate network .Product Features1.supply main optical ... G.704 and G.823 16E1 Optical PDH Multiplexer fiber 1+1 with 1*10/100M ethernet line and 1ch phone line