Full PBX telephony feature preservation across a voice over...

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...

Handling communications between stations in a digital...

Handling of identities in a trust domain of an IP network

Handling real-time transport protocol (RTP) media packets in...

Handover processing system in mobile communication system