Unique cable configurations and their electrical characteristics are a source of information to the expert system. Cable Model Information Above is a sample of the cable configurations developed by Teradyne in the Cable Farm. The electrical characteristics as measured by the LDU are stored for comparison by the ExpertLink analysis system. By having an extensive library of modem models and cable configurations to draw on, accompanied by the LDU test results, the Celerity system provides more accurate test information. Celerity is able to accurately model the attenuation of each line at certain frequencies and therefore able to accurately predict whether the line can support ISDN or the various speeds of different ADSL services.
Celerity also performs a real time test that provides detailed loop qualification information.
Celerity also tests in-service DSLs, identifying the presence and dispatch location of data affecting faults. All rights reserved.