User Manual

Chapter 1 - System Description The Base Transceiver Station
4Motion 14 System Manual
modules are hot swappable, and high availability can be provided through
multiple redundancy schemes.
The shelf modules are:
The six single-Euro slots are intended for one or two redundant Power Interface
Units (PIUs) and up to four redundant Power Supply Units (PSUs). One of the
double Euro slots is dedicated to the NPU module, with interfaces for network
backhaul, in-band and out-of-band (OOB) management connections. Another
double-Euro slot is reserved for an optional redundant NPU (the shelf is HW-ready
Figure 1-6: BreezeMAX Shelf (with all modules installed)
Table 1-1: BreezeMAX Shelf Modules
Module Description
PIU 3U high power interface unit, 1+1 redundancy, -48VDC, protection, filters
PSU 3U high power supply unit, up to 3+1 redundancy
NPU 6U high network processing unit with optional ASN-GW functionality, hardware
ready for 1+1 redundancy, 1000/100 Base-T main network interface, 1000/100
Base-T cascade interface and 100/10 Base-T out-of-band management interface
AU 6U high access unit, 4-channel, 802.16e MAC-modem-baseband IF card
AVU 2U high air ventilation unit, 9+1 redundancy fans with alarm control