User Manual

DXUDistribution Switch Unit
5.2 Operator Interface
This section describes the operator interface of the DXU, which consists of
the following:
• G.703 Interface
• OMT RS 232
• Test Interface
• Indicators
G.703 Interface
The G.703 interface is used for communication with the BSC, according to
the ITU - T G.703 standard. The G.703 interface for DXU-01, DXU-03 and
DXU-11 are described in the table below. Two G.703 interfaces are available
for DXU-11.
Table 3 G.703 Interface
DXU-01 DXU-03 DXU-11
2.048 Mbit/s 75
or 12
0
(CEPT
or E1)
Interface(s)
2.048 Mbit/s
75 o
r 120
(CEPT or E1)
1.544 Mbit/s 100
(T1
)
1.544 Mbit/s 100
(T1)
Both channel A and channel B are of type 9-pin male D-sub. The board has two
G.703 connectors. For information about the interface pins and their functions,
see the table below.
8 (12)
EN/LZT 720 0243 Uen R1A