Aastra Technologies Limited, formerly headquartered in Concord, Ontario, Canada, made products and systems for accessing communication networks, including the Internet.

Its products included residential and business telephone terminals, screen telephones, Enterprise private branch exchanges (PBX), network access terminals and high-quality digital video encoders, decoders and gateways.

Mitel Networks Corporation announced on November 11, 2013, that it would acquire Aastra Technologies Ltd. in a stock and cash deal valued at about $400 million.

[3] In 1983, Francis Shen and Hugh Scholaert bought an engineering consulting company, founding Aastra in Toronto in 1983.

[citation needed] Then, in 2001, Aastra acquired Lucent Technologies' Digital Video business[5] and Ericsson Cable Modem.