The advent of next-generation access networks is changing the way our phones work. Luke Collins talks to the people in charge of keeping them ringing. IT SEEMS SO EASY. You pick up the phone, hear a dial-tone and dial your number. But the apparent simplicity of a dial-tone belies the complexity of the global telephony network that ensures we can call around the world without giving it a second thought. That network, however, is set to become more complex as our phone connections evolve from a simple pair of copper wires into being just one of a number of services on a high-bandwidth next-generation access (NGA) network that may be delivered over traditional copper lines, fibre or even RF links.
展开▼
