A telecommunications system which employs commodity simultaneous voice and data (SVD) modems to provide a user with a virtual presence to an office. A first telephony adapter is coupled between a user's home modem and a telephone. A second telephony adapter is coupled between a server modem and the PSTN....http://www.google.es/patents/US5870465?utm_source=gb-gplus-sharePatente US5870465 - Telephony adapter system for providing a user with a virtual presence to an office
Telephony adapter system for providing a user with a virtual presence to an ...
