Ericsson RBS 2106 Hardware Reference Manual page 335

The Distribution Switch Unit (DXU) 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.
O M T
E S B
G P S E O
M
D X U re se t
Fa ul t
O pe ra tio na l
Lo ca l
R S B F a u
lt
E xt A la rm
V 7 -1 2
s
E P C b u s fa
u lt
E O M bu s
fa u lt
Lo ca l R em
ot e
Te st
E P C
V 1 -6
P o rt B
P o rt A
S ta tu s
P o rt A
P o rt B
P o rt D
P o rt C S ta tu s
P o rt C
P o rt D
DXU-21
Distribution Switch Unit
Unit Description
EN/LZT 720 0244 R1A
1(10)
P009064A