Nortel Networks Corporation, formerly known as Northern Telecom Limited, Northern Electric and sometimes known simply as Nortel, was a multinational telecommunications and data networking equipment manufacturer headquartered in Mississauga, Ontario, Canada. It was founded in Montreal, Quebec in 1895 as the Northern Electric and Manufacturing Company. At its height, Nortel accounted for more than a third of the total valuation of all the companies listed on the Toronto Stock Exchange (TSX), employing 94,500 people worldwide.