
2-4 Installation
2100 CSU
DTE Connection
The DTE interface of the CSU is a DSX interface. The DTE
output level should be set as described in DSX Level on
page 2-3. The DTE physical interface for both the standal-
one unit (Figure 2-4) and the chassis unit (Figure 2-5 and
Figure 2-6) is a standard RJ-48C, 8-pin modular jack with
the pinout shown in Table 2-F.
DB-15 Connection
DB-15 connectors are optional for the DTE and network
interfaces. Refer to Optional Equipment on page 1-4 for
ordering information. The DB-15 pinout is shown in Table
2-G.
Table 2-F DTE Interface Pinout
Pin DTE Interface
1 Data Out
2 Data Out
3Not Used
4 Data In
5 Data In
6Not Used
7, 8 Chassis Ground
DTE
8
1
8
1
1
6
DB-15
(optional)
NET
Figure 2-4 2100 CSU Standalone Rear Panel
1+V
2GND
3-V
4FRM GND
5ALM
6ALM COM
DB-15
(optional)
Table 2-G DB-15 DTE and Network Interface
Pinouts
Pin DTE NET
1 Data In Data Out
2 Frame Ground Frame Ground
3 Data Out Data In
4 Frame Ground Frame Ground
9 Data In Data Out
11 Data Out Data In
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