SELECT THE DESIRED HARD LOOP OR END TO END TEST MODE USING THE BUTTONS ON THE RIGHT.

Use this test mode to perform measurements, such as BERT, on a known test pattern being sent from the far-end. The far-end signal can be generated by looping back the transmitted signal from this test set or by a second test set. To use this test have someone at the far end manually loop-up the equipment or generate a known pattern with a far-end test set. Since a pattern is being sent on the T1 line, service on the T1 will be affected.