Nortel

Nortel was a large Canadian telecommunications company and one of the oldest technology companies. It was founded in Montreal. The company started making phones in 1895, and the company was called Northern Electric and Manufacturing Company.
At the end of the 20th century Nortel had over ninety thousand employees. Nortel's value formed thirty percent of the capital of the Toronto Stock Exchange.
Nortel filed for bankruptcy in 2009. In 2020, the Vancouver Sun speculated that corporate espionage by Huawei caused Nortel’s failure.