MORRISTOWN, N.J. -- Tyco Industries has adopted AT&T progeny Submarine Systems Inc. (SSI), and already the undersea telecommunications company is showing its new parent that it learned a lot from Ma Bell.Submarine Systems has announced its own fiber network, Atlantic Crossing I, which will link the US, the United Kingdom and Germany. The route will span more than 14,000 km.Submarine Systems, constrained to producing and installing fiber cable when it was with AT&T, plans to take on the planning, engineering, installation, maintenance, marketing and capacity sales for the new route."This is a new breed of SSI, and this network demonstrates that we can offer capabilities beyond manufacturing and construction," said Bill Carter, the company's president.Carter said Atlantic Crossing I will be a state-of-the-art network offering the largest capacity to date in an undersea network: It will begin at 20 Gb/s with upgrades possible. Undersea fiber networks are filling up at an astounding rate. TAT-13, connecting the US and Europe, and TPC-5, joining the US and Japan, already are oversubscribed, he observed.Factors in the buildup include intensifying telecommunications carrier competition, coming substantial reductions in international connect fees and burgeoning Internet traffic, Carter said.Pacific Cable Telesystems Ltd. is providing the venture capital for the new route.