ADTRAN ESU 120e user manual POWER-UP Testing, Self-Test

Chapter 2. Installation

D rop (PBX) Interface

The drop interface provides a G.703 interface for a PBX or other equipment.

Control Port Input

The control port input provides an EIA-232 input from a PC or a modem for control of the ESU 120e. You can also use it as a chain input from another ESU 120e or ESU 100. For more information see Wiring on page B-1.

Chain Port Output

The chain port output provides an EIA-232 output to chain control to other ESU 120es. For more information see Wiring on page B-1.

10BaseT Interface

The 10BaseT interface provides the LAN interface for managing the ESU 120e with SNMP or T-Watch Pro. For more information see Wiring on page B-1.

POWER-UP TESTING

When shipped from the factory, the ESU 120e is set to factory default conditions. At the first application of power, the unit auto- matically executes a memory self-test. A full self-test can be run from the front panel, and a pass code and unit ID may be set using the UTIL menu.

Self-Test

Upon a power-up, the LCD displays Memory Test Now Testing and the Test LEDs are illuminated. When the self-test is completed with no failures detected, the OK LED lights up and the LCD momentarily displays All Tests Passed. If a failure is detected, a list of failures is displayed in the LCD window. The full self-test procedure (invoked from the front panel or T-Watch PRO) consists of the following tests:

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