Chapter 7 - Using the LCD for Configuration and Management

4Press Enter.

5Press Next to scroll through the settings for the alarm.

6Press Enter to select the preferred setting. RMT LOSS OF SIG ALM is displayed.

CONFIGURING LOOPBACKS

Loopbacks provide a way to test the data communication path between the Campus unit, the remote unit, and the remote host equipment. The Campus-REX2 supports two types of loopbacks:

Local to Remote loopbacks test the remote data port, the data path inside the remote Campus unit, the HDSL line, the HDSL transceivers of both units, and most of the internal data path inside the local unit. This loopback does not test the local data port drivers and receivers.

Remote to Remote loopbacks test the remote data port and a small portion of the remote interface card.

If both the local and remote units have a Campus-REX2 or Campus-REX interface card, no loopbacks are supported.

Once a loopback condition has been initiated, it remains in effect until cleared. You may also set a loopback timeout to clear the loopback automatically after a set period of time has elapsed.

You manage loopbacks through the DIAGNOSTICS menu:

1Press Escape until CAMPUS RS I/F: REX2 is displayed.

2Press Next four times. DIAGNOSTICS is displayed.

3Press Enter. LOOPBACK MODE is displayed.

The following sections describe how to initiate and clear loopbacks, and to set a loopback timeout.

Campus-REX2 RS Interface Card User Manual

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