The name of the 37-year-old NetComm, which developed Australia's first dial-up modem, will disappear altogether with its absorption into the American firm.
NetComm's agreement to the deal was announced in February. It will now operate as a fully-owned subsidiary of Casa Systems which paid A$161 million to buy the Australian firm.
NetComm directors Justin Milne, Stuart Black, David Stewart, David Spence and Jacqueline Korhonen all resigned from the board following the finalisation of the deal, while Steven Collins, Scott Bruckner and Timo Brouwer were appointed to the board. Ken Sheridan quit on 28 June.
Casa Systems president and chief executive Jerry Guo said: “We are very excited to welcome NetComm to the Casa Systems family. “Casa and Netcomm share similar values, as well as rich engineering cultures.
"We look forward to building on both companies’ long histories of bringing innovative products to the communications industry. By combining our two companies, Casa is able to provide additional connectivity solutions that address our customers’ needs.
"Our shareholders will benefit from our expanded addressable market, potential to further grow our revenue, and greater geographic and customer diversification.“