Chapter 2. Installation and Operation

Logout

The LOGOUT selection ends the terminal session and logs out of the system. Password entry is required before a new session can begin.

LED Descriptions

The T3SU 300 has LED status indicators for remote access, the network port, and for each individual DTE port. These LEDs are identified as follows:

Remote Active

This LED is solid when a remote configuration session is taking place through a TELNET session or from the remote end T3SU 300. It flashes when the unit is being accessed locally through the front panel Control port.

Network LEDs

In Service

This LED is active when a valid signal is being received on the DS3 interface.

In Test

This LED is active when the network interface has been put in loopback by the service provider.

Alarm

This LED is active when the DS3 receive signal contains framing errors, the yellow alarm is received from the far end unit, or other alarm messages are received from the network.

LOS

This LED is active when no receive signal from the network is detected on the Rx (in) circuit.

DTE Port LEDs

Status

This LED indicates the following conditions:

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T3SU 300 User Manual

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ADTRAN T3SU 300 user manual LED Descriptions, Los