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CHAPTER 3.
Architecture
3.1 System Configuration
The outdoor SPI-2331 is roughly composed of two boards(ULDB and ULRB), power
device, heater, and U-RAS Light series-3 Line Protection Module-2 Fast Ethernet(ULPM-
2FE).
The internal configuration of the outdoor SPI-2331 is as shown in the figure below:
IP Network
(ACR)
Traffic path
Alarm & control
Clock
The backhaul between the ACR and the outdoor SPI-2331 is Fast Ethernet type, and the
service provider can select either 10/100Base-Tx or 100 Base-Fx for the backhaul. When
the backhaul between the ACR and the outdoor SPI-2331 is 10/100Base-Tx, ULPM-2FE
mounted on the system for protecting the outdoor SPI-2331 from an electrical overload
© SAMSUNG Electronics Co., Ltd.
Mobile WiMAX Outdoor RAS SPI-2331 System Description
Outdoor SPI-2331
GPS
Outdoor SPI-2331
FE(Optic × 2 port)
or
FE(Copper × 2 port)
ULPM-2FE
UDE
Figure 3.1 Internal Configuration of Outdoor SPI-2331
UCCM*
LVTTL
ULDB
Craft
Rectifier
UDA
*UCCM is mounted on ULDB.
2Tx/2Rx
ULRB
3-1
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