External 2Mbps or 2.048 MHz timing signal inputs are provided for synchronizing the equipment. Further, reference 2Mbps reference output is provided.
This is provided through the analog 2-wire interface. The EOW bytes are software selectable to E1 or E2.
Potential free contacts:
These provide dry contacts for extending the alarms. Five such potential free outputs are provided that are tied to alarms for Critical, Major, Minor, Order Wire and Power. Two potential free inputs are provided for environmental alarms like "Power or Air-conditioning failure", "equipment room door open" etc.
E1 Tributary Card
E1 / DS1 tributary card are supported in a single chassis.
E3 / DS3 Tributary Card
E3 / DS3 tributary cards are supported.
10/100 Mbps Ethernet Tributary Card
Ethernet Tributary Card maps 10/100 Mbps Ethernet data on to VC-12's with a rate adaptation granularity of 2 Mbps. Each port's bandwidth is configurable in increments of 2Mbps, based on per port user demand. The aggregate bandwidth from each ETC card is at most STM-1 line rate (63 VC-12 worth of traffic).
Power Supply Unit
Power to all the cards in the chassis is distributed from this unit accessible from the rear. This is running off a-36V to -60V DC supply.
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