...major phone companies, Bell Atlantic Corp. is investing billions of dollars to upgrade its network to handle voice and data transmission using more efficient, Internet-based technologies. But to pare costs in intense competition with smaller...

...telephone line handle virtually every telecommunications function. Sprint is leapfrogging its competitors to offer voice and data transmission over one vast network. Currently, phone calls travel over a single circuit, and while the circuit is open...

...backpacks. Unlike the Vietnam-era radios, SINCGARS have embedded communications security equipment, ensuring voice and data transmissions are safe from enemy interception, Col. Rodakowski said. "They're smaller, more user-friendly, more...

...new system that allows one telephone line to handle virtually every telecommunications function, including voice and data transmission at the same time. Notebaert said informal discussions with regulators so far have revealed no major objections...