point to multipoint 360 telephone fiber access application

Solution description: 

the total capacity is center side is 360 channels phone, 2 channels line seed independent 100M or 1000M Ethernet (2 channels independent Ethernet in center side), 2 channels serial signals, 4 E1 remote transmission, and the two direction can realize fiber 1 + 1 backup, with SNMP management. 

The total telephone capacity in two client side is 360 channels, and it is adjustable, can two each side access 180 phone, also can access 240 phone in one clients side,120 phone in another client side.