An apparatus for interfacing a wireless local area network with a wide area, cellular or public switched telephone network including the function of a wireless LAN base station or access point, and a gateway. The interface may contain one or more different types of gateways, including a PSTN voice gateway,...http://www.google.es/patents/US7693101?utm_source=gb-gplus-sharePatente US7693101 - Apparatus for interfacing a wireless local network and a wired voice telecommunications system
Apparatus for interfacing a wireless local network and a wired voice ...
