Node Processor Unit (Npu) - Ericsson MINI-LINK TN R3 ETSI Technical Description

MINI-LINK TN R3 ETSI
3.3

Node Processor Unit (NPU)

The NPU implements the system's control functions. One NPU is always
required in the AMM. The NPU also provides traffic, DCN and management
interfaces.
The NPU holds a Removable Memory Module (RMM) for storage of license and
configuration information. The following NPUs are available:
3.3.1 Overview
NPU1 B
NPU2
NPU3
10/100BASE-T
Figure 24
The following summarizes the common functions of the NPUs:
•
20
Fits in an AMM 6p B or AMM 20p.
Fits in an AMM 2p.
Fits in an AMM 2p B, AMM 6p C or AMM 6p D.
O&M
Not used
+24 V DC
–48 V DC
4xE1 + 2xUser Out
NPUs
Traffic handling
2x(4xE1) User I/O
RMM
1x(4xE1)
O&M
10/100BASE-T
O&M
2x(10/100BASE-T)
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
RMM
NPU1 B
NPU2
NPU3
RMM
9959