Chapter 2. Installation

Subsequent ESUs in the chain are in a position to intake informa- tion from another ESU. This in-taking of information from another ESU in the chain is identified as chain in. The baud rate for the chained units must match that of the first unit.

Unless locked out externally, the front panel can also control the unit.

At this point, the Unit Initialization procedure is concluded. If the unit is to be configured remotely, there are no additional items nec- essary to complete prior to executing remote configuration.

The Passcode, the Unit ID, and the Control Port settings are stored in a nonvolatile memory. This assures they are operable for subse- quent power-up sequences.

NORMAL POWER-UP PROCED URE

After the unit has been put into operation with the initial power-up and initialization, subsequent power-up procedure includes only the Power-Up self-test followed by the request for a passcode (password) if this option was selected during initialization.

Use the number keys to enter the previously recorded passcode fol- lowed by pressing Enter.

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ESU 120e User Manual

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ADTRAN ESU 120e user manual Normal POWER-UP Proced URE