Managed PDH Optical Transmitter & Receiver is a 6U height rack type chassis, adopts double redundant power supply. SNMP network management main control module, subordinate control module, 4 channels / 8 channels optical transmitter / receiver, 10 / 100M Ethernet and E1 interface module, Ethernet and E1 integrated transmission module, and other modules should be inserted to this kind chassis. It is main applied to LAN terminal and can be lay in 19 inch rack for save space and also, can be managed and monitored by SNMP network management software.Product Feature1. Standard 19 inch, 6U height2. One network management slot, twelve user board slots, two power strip slots3. Flexible group network, different capacity and different kind operation cards can be mixed insert to4. High density ports, up to 12 light directions and 96 E1 capacity5. Meet EMC design6. Offers alarm fan-out7. Inside installation special high frequency switch power of communications, provides power failure indication8. 220 V AC or-48V DC power supply, supports double redundant power of Plug-and-Play installation9. Supports excessive electric current or voltage defencive function.10. Double redundant power supports LOAD SHARING working manner, switch in no time11. Output ripple of power less than 40mV12. All chassis support ground protection