Jamshid Rezaei (CIO) Venkat Nagaswamy (CMO) Greg Hiscock (CLO) Mitel Networks Corporation is a Canadian telecommunications company.

The company previously produced TDM PBX systems and applications, but after a change in ownership in 2001, now focuses almost entirely on Voice-over-IP (VoIP), unified communications, collaboration and contact center products.

[3][4] In April 2018, the company announced it had been bought by an investor group led by Searchlight Capital Partners.

[citation needed] Their first shipment of three lawnmowers was lost in shipping, so they quickly adjusted to produce a telephony tone receiver product (a tone-to-pulse converter for central office use based on Cowpland's Ph.D. thesis).

Early on, the pair realized the significance of the then-new microprocessor and software technology[10] to the design of telecom switches.

[10] In 1976, the company expanded into the semiconductor field with the acquisition of Siltex, a bankrupt ISO-CMOS foundry in Bromont, Quebec.

[citation needed] In 1985, due to a financial crisis in the company, the board of directors created enough new shares to sell a controlling interest (51%) to British Telecom.

British Telecom left the equipment business a few years later and sold its controlling interest in Mitel to an investment company called Schroder Ventures.

[12][13] It began a new chapter, under the name Mitel Networks, by developing a family of PBXs based on Internet standards for Voice over IP (VoIP).

[18] On April 22, 2010, Mitel became a public company,[19] listed on Nasdaq with the symbol MITL, and its initial offering stood at $14 per share.

[26] In December 2016 the company announced that it had sold its mobility unit for $385 million to Xura and that would focus its business on Unified Communications.

prairieFyre was an original equipment manufacturer (OEM) that supplied Mitel with its existing contact center solution.

The acquisition was ended in favour of a merger with Siris Capital instead,[32] forcing Polycom to pay a US$60 million fee to Mitel for cancelling the deal.

[33] In July 2017, Mitel announced they had reached a deal to buy ShoreTel for $530 million, increasing the size of the company to approximately 4,200 employees.

[34][35][36] Major League Baseball, in 2018, entered into a deal with Mitel to unify communications "between the press box, dugout, bullpen and video review rooms at every MLB ballpark from the Rogers Centre to Wrigley Field".