VMUX-SYS.ARCHITECTURE (WIRING AND TERMINATIONS)

2.4          WIRING & TERMINATIONS

All the connections are terminated on the connectors on the rear side of the motherboard. VMX-0100 receives -48V power supply through a shrouded connector located on the rear of the motherboard. All user interfaces as well as 120Ω interfaces of PCM1, PCM2, network clock-in, clock out have their terminations on the Euro-connectors on the rear side of the motherboard. The Euro Connectors used on the Motherboard provide the dual functionality. They provide the slots to accommodate upto 14 Cards on front side whereas these are used to connect the PCM Streams and Voice/Data Lines from the rear. 75 Ω interface terminations for Clock Input and Clock Output are also brought on to BNC connectors. Two DB15 connectors have been provided for the NMS. One DB9 connector has been provided to extend the Major & Minor Alarms to the Bay Top Panel.