Chapter 11. Testing

PVC Loopback

A PVC LOOPBACK test is a non-intrusive loopback option for each PVC. During this test, the TSU IQ+ periodically sends test frames to the remote TSU IQ+ which are then returned for analysis. The bandwidth required is approximately 1 kbps for each PVC in test. See Figure 11-3 for the terminal menu.

Figure 11-3. PVC Loopback Menu

DLCI <0 = All> (DLCI)

Enter the DLCI of the PVC to be tested (or enter 0 to test all available PVCs). Range is 0 to 1007.

Test Length

Amount of time (in minutes) that you want the test to take place. Enter 0 for a continuous test. This option is not available on the front panel. Range is 0 to 1440.

Start Test

Starts the test.

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TSU IQ+ User Manual

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ADTRAN TSU IQ+, 1204002L2 user manual PVC Loopback, Test Length, Start Test