Black Box CSU/DSU MS/DBU, Руководство пользователя

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CHAPTER 2: Introduction
2.5 The Rear Panel
The rear panel contains three data DTE connectors that provide primary-
channel V.35 or RS-232, and a secondary-channel RS-232 port (auxiliary EIA
232). An 8-pin telco jack, a captive power cord, and a power switch are also
located on the rear panel. Pin assignments for the DTE and network
connections are listed in
Chapter 3 .
Fig. 2-2. CSU/DSU SW56 Rear Panel.
Table 2-1. Key to Fig. 2-2.
Item Function
1. Auxiliary EIA-232 Secondary channel services
2. Power Switch Used to turn power on or off
3. Line 1 Connection to the dedicated circuit
4. Line 2 Connection to switched backup
5. Primary EIA-232 DTE interface
6. Primary V.35 High-speed digital data service
7. 115 VAC Connection Power-cord connection
LINE 1
AUXILIARY EIA-232
PRIMARY EIA-232
PRIMARY V.35
115 VAC
60Hz .15A
ON
OFF
1 2
3 5 6 7
LINE 2
4