EXFO CableSHARK P3 VF/DSL Cable Qualifier - Manual (Page 11)

CableSHARK P3 User Guide
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Patent Information
The End-to-End DMT test used by the EXFO CableSHARK is patent protected.
ADSL Data Rate Prediction (End to End):
United States Patent # US 6,445,773 B1 September 3, 2002
ADSL Data Rate Prediction (End to End):
Canada Patent # 2,297,871 December 28, 2004
The Single-Ended DMT test used by the EXFO CableSHARK is patent pending.
ADSL Data Rate Prediction (Single End):
United States Patent Pending # 10/133,408