EXFO Introduces Industry's First Integrated Test Solution for Troubleshooting DWDM Networks EXFO Press Release October 1, 2019 The Optical Wave Expert diagnoses and fixes faults on the spot to cut mean-time-to-repair  QUEBEC CITY /CNW Telbec/ - EXFO Inc. (NASDAQ: EXFO) (TSX: EXF) the communications industry's test, monitoring and analytics experts, today introduced the Optical Wave Expert, [...]