Ericsson RBS 2106 Hardware Reference Manual page 337

1 Product Overview
The DXU-21 is a CPU, which acts as an interface between the transmission
network and the transceivers. It also extracts timing information from the PCM
link and generates a timing reference for the RBS. The DXU also performs
supervisory tasks.
The DXU-21 transmission interface has long-haul capability and can be run on
both 1.544 Mbit/s (T1) and 2.048 Mbit/s (E1) PCM links.
1.1 Main Functions
The DXU serves as the Central Main CPU node and its main functions are:
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2 Dimensions
The DXU-21 has the following dimensions:
Table 1
Height
227 mm
(6 HE x 44.45 mm)
3 Power Consumption and Heat Generation
Table 2
Max. Power Consumption
40 W (typical 30 W)
Provides the RBS with an interface to the transport network through four
fixed E1/T1 transmission ports
Handles incoming traffic, controls and supervises information and sends it
to its destination within the RBS
Provides frequency reference signals and timing signals for circuits within
the RBS
Stores and executes RBS SW stored on a removable flash card
Controls the climate and power system
Size and weight
Width
71 mm
(14 TE x 5.08 mm)
Power consumption and heat generation
Depth
240 mm
Max. Heat Generation
40 W
3(10)
Weight
2.4 kg
EN/LZT 720 0244 R1A