The creation of "virtual telephony endpoints" within a subscriber's location allows for diverse types of telephone sets, connected via different types of communication networks (e.g., PSTN, Ethernet, power line connections, etc.), to be grouped together and perform as "extensions" as in the sense of...http://www.google.fr/patents/US20030056226?utm_source=gb-gplus-shareBrevet US20030056226 - Implementation of virtual telephony endpoints in communications gateways
Implementation of virtual telephony endpoints in communications gateways
