A system and a method for quantitatively measuring voice transmission quality within a voice-over-data-network such as a telephony-enabled LAN utilize speech recognition to measure the quality of voice transmission. A first aspect of the invention involves determining the suitability of the LAN for voice...http://www.google.com/patents/US7092880?utm_source=gb-gplus-sharePatent US7092880 - Apparatus and method for quantitative measurement of voice quality in packet network environments