Certain exemplary embodiments provide 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; encoding, via high-quality audio codec instructions running on a digital...http://www.google.es/patents/US7508814?utm_source=gb-gplus-sharePatente US7508814 - Electronic loop provisioning methods and systems
