Basic Node
• Traffic handling
• System control and supervision
• IP router for DCN handling
• SNMP Master Agent
• Ethernet interface for connection to a site LAN
• Storage and administration of inventory and configuration data
• USB interface for MINI-LINK Craft connection
There are also some specific functions associated with each NPU type as
summarized below.
NPU1 B
• 2x(4xE1) for traffic connections
• Three User Input ports
• Three User Output ports
NPU3
• 1x(4xE1) for traffic connections
• Two User Output ports
• Ethernet traffic port
NPU3 B
• 1x(4xE1) for traffic connections
• Two User Output ports
• Ethernet traffic port
• Ethernet switch
3.3.2 Functional Blocks
This section describes the internal and external functions of the NPUs, based
on the block diagrams in Figure 20 on page 20, Figure 21 on page 20 and
Figure 22 on page 21.
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