STM-1
interfaces:
STM-1 interfaces depending on Terminal multiplexer or Add-Drop Multiplexer configuration.Management
interfaces:
This is provided through the 10/100 Mbps NMS (Ethernet) port or an RS232C craft
port.
Timing Interfaces:
External 2Mbps or 2.048 MHz timing signal inputs are provided for synchronizing
the equipment. Further, reference 2Mbps reference output is provided.
Engineering order-wire:
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 areprovided 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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STM-1, VCL100CPE (with 14 E1) and with one tributary interface card (E3 / DS3 / Ethernet) is an ultra-compact
and cost-effective customer premises bandwidth provisioning STM-1 SDH multiplexer
equipment designed to meet low or medium capacity bandwidth service demands.