ADTRAN TSU LT, Руководство пользователя

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Chapter 1 Introduction TSU LT User Manual
20 © 2003 ADTRAN, Inc. 61203060L1-1A
TSU LT Features
• Easy configuration capabilities using simplistic menus displayed in a liquid crystal display (LCD)
window operated by a front panel keypad.
• Timing is selectable from the network, from the Nx56/64 DTE port, or internally.
• Variety of test patterns: all ones, all zeros, 511, 1:8.
• Extensive self-testing and monitoring ensures proper operation.
• Flexible channel allocation (any starting channel and alternate or contiguous).
TSU LT Interfaces
The TSU LT is equipped with four interfaces:
• Network DS1 interface per AT&T 62411
• Nx56/64 serial V.35
• Control input (EIA-232)/Chain port input
• Chain port output
TSU LT BRIDGE/ROUTER APPLICATION
A bridge or router can be interfaced to the network by using the V.35 DTE interface. The bandwidth used
is programmable at Nx56 or Nx64 data rates for T1 or FT1 service. The bandwidth can be selected as
contiguous or alternate. Figure 1-3 shows a simple bridge application.
Figure 1-3. Simple Bridge Application on a T1 or an FT1 Circuit
PWR
ERR ALM TST TD RD CS
TSU LT
PWR
ERR ALM TST TD CS RS RS
PWR
ERR ALM TST TD RD CS
TSU LT
PWR
ERR ALM TST TD CS RS RS
TSU LT TSU LT