Cisco has announced it has completed its acquisition of Norwegian video systems maker Tandberg and is launching a compulsory bid for the outstanding 8.9% shares it does not yet own.Marthin De Beer, Cisco's senior vice-president for its emerging technologies group, said the company "strongly believed" that telepresence, would allow everyone, everywhere, to be more productive through the pervasive use of video and face-to-face collaboration. The full Tandberg product line is now part of the Cisco TelePresence portfolio, he said.