A programmable graphical user interface (GUI) for use in a communication test set which conducts line tests at different communication levels for both a primary signal and a secondary signal. The GUI includes four screens. The first screen displays test results for a first communication level. The second...http://www.google.com/patents/US6556223?utm_source=gb-gplus-sharePatent US6556223 - Communication test set with a graphical user interface that can simultaneously present and update test results of a communication signal at multiple levels
