A system for wireless communication comprises an architecture of routers connected to a network and having connected transceivers for wireless transmission and reception of data, and a plurality of hand-held communicators adapted for users to communicate with the network through the routers. The system...http://www.google.com/patents/US6560214?utm_source=gb-gplus-sharePatent US6560214 - Noise reduction techniques and apparatus for enhancing wireless data network telephony
