Nortel Networks Corporation, formerly known as Northern Telecom Limited 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. 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 worldwide.
On January 14, 2009, Nortel filed for protection from its creditors in the United States, Canada, and the United Kingdom, in order to restructure its debt and financial obligations. In June 2009, the company announced it would cease operations and sell off all of its business units. The period of bankruptcy protection was extended to February 2, 2013. As part of the bankruptcy proceedings in the United States, Nortel Networks Inc. publishes monthly operating reports outlining cash receipts and disbursements.