The system has two STM-1 optical / electrical interfaces in the aggregate side and allows for upto 3 tributary add-on cards. The following tributaries are available as add-on cards for the chasis:
The STM-1 / STM-4 can be managed through an integrated NMS that manages all the equipment, providing customers with end-to-end provisioning from a single platform for multiple service types - from E1/DS1s, E3/DS3s, E4/STM-1e, STM-1o and 10/100Mbps Ethernet services.
Additionally it provides a single 10/100Base-T Ethernet port, which can be mapped to one VC-12 bandwidth towards the aggregate side. This feature does not use any tributary slot and hence can supplement E1/DS1/E3/DS3 customers requiring a single Ethernet interface. This Ethernet interface on the base card is optional.
The base chassis houses the following:
STM-1 interfaces: STM-1 optical / electrical interfaces are supported 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.
Order-wire: This is provided through the analog 2-wire interface. The EOW bytes are software selectable to E1 or E2.
Alarms: 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.
A 2.048 M BITS clock output is available from the system, which can be set to either a 2.048 MHz clock or a framed E1 data at 2.048 Mbps.
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