Gatekeeper election methods for internet telephony
Gateway adapter for a PBX system
Gateway apparatus
Gateway apparatus
Gateway apparatus
Gateway apparatus, terminal specification method for gateway...
Gateway for internet telephone
Gateway for using non-IP digital PBX telephone handsets with...
Gateway making it possible to develop new services...
Gateway system for voice communication and controlling...
Geographic redundancy for call servers in a cellular system...
Geographic trunk groups
Ghost network built using data transmission via phantom mode
Global internet voice communication system
GPRS-subscriber selection of multiple internet service...