Chapter 1. Introduction
Features
•A DS1 interface and an Nx56/64 DTE serial interface port.
•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.
•All ones, 3:24, 511 and 1:8 Test Patterns.
•Extensive self test and monitoring provides assurance of proper operation.
•Flexible channel allocation (any starting channel and alternate or contiguous).
Interfaces
The TSU is equipped with four interfaces. See Figure
•Network DSI interface per AT&T 621411
•Nx56/64 serial V.35 high speed interface
•Control input (RS232) / Chain port input
•Chain port output
PC or Modem |
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| Control | Chain | Chain | Chain | ||
| Input |
| Output | Input |
| Output |
| NI | TSU | NI | TSU | ||
Network | Nx56/64 |
| Nx56/64 |
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Figure 1-3. TSU Interfaces
TSU User Manual |