Installation Manual

August 23, 2006 Revision 00b-DRAFT 7
Chapter 1: Overview
Major Components
This section describes the major components in the NPM-2500.
Chassis
The chassis consists of a Kaparel 1U CompactPCI chassis with two frontplane slots, two backplane
slots, and a slot for a 200W, –48V power module.
Sector Controller
The sector controller consists of a PP310 card from Concurrent Technologies and provides base
station management functions and IP connectivity to the router. The sector controller is installed in
the lower chassis slot.
Sector Controller RTM
The sector controller Rear Transition Module (RTM) has two Ethernet ports. eth0 is used for the
backhaul connection/connection to the edge router. eth1 is used for a management connection (eg: a
laptop). The RTM contains a CompactFlash card that stores all the software images for the base
station.
Modem Card
The modem card converts digital data between the air interface and the IP-based network. There are
two serial interface ports (MAIN SERDES, DIV SERDES) for connection to the main and diversity
radio modules. The modem card is installed in the upper chassis slot.
Modem Card RTM
The modem card RTM provides rear-panel connects and includes a clock source for use with the air
interface.
Radio Modules
The radio modules contain the power amplifiers and other equipment required for RF transmission
and reception. The base station uses two radio modules per sector: one for the main antenna and one
for the diversity antenna.
Edge Router / Ethernet Switch
The edge router (or Ethernet switch, depending on the network configuration) is a third-party device
that provides connectivity between the base station and the network core via a backhaul. Contact your
SOMA Networks technical representative for a list of approved equipment.
PDP
The Power Distribution Panel (PDP) provides –48V power to the chassis, edge router, and individual
radio modules. Each power feed is protected by a circuit breaker.