Patent ID: 7508814

Claim:
A method, comprising: receiving, at a subscriber interface line card, an analog signal from a POTS subscriber loop circuit; quantizing the analog signal into a plurality of digital samples; responsive to an SS7 query of a server that determines that a subscriber is an enhanced service subscriber, encoding, via high-quality audio codec instructions running on a digital signal processor installed on the subscriber interface line card, the plurality of digital samples, the codec instructions encoding multiple channel audio, the digital signal processor adapted to switch automatically between one or more high quality audio codecs and a POTS codec depending on: capabilities of customer premises equipment at either end of a call comprising the analog signal, at least one piece of customer premises equipment exchanging network signals, to verify that a subscriber is using intelligent customer premises equipment, intelligent customer premises equipment capable of reproducing high fidelity voice signals having a frequency range that is wider than 3.1 kilohertz; and capabilities of a network via which the plurality of digital samples are transmitted; and converting, via conversion instructions running on the digital signal processor, the encoded plurality of digital samples into a plurality of VoATM packets, the high-quality audio codec adapted to encode an audio signal having a maximum frequency greater than 3.5 kilohertz.