Wikipedia
EXFO
EXFO is a company that designs and manufactures test instruments and service assurance for fixed and mobile telecom networks. Its products include optical, transport, datacom, 3G, LTE, copper, xDSL, IMS and VoIP test platforms used by network operators and network equipment manufacturers to assess the telecom infrastructure and the telecom services carried on it. EXFO is headquartered in Quebec City, Canada and has approximately over 1200 employees worldwide.