Field telephone system
Fingerprint-ID-activated message playback apparatus and method
Flexible ANI
Flexible call alerting
Flexible distributed/centralized architecture for...
Flexible, tapeless, personalized auto-attendant telephone
Foldable portable telephone set
Forewarning of telephone automatic answering device
Forked-call ringback replacement system
Forwarding voice messages to a called party using electronic...
Forwarding voice messages to a called party using electronic...
Four channel audio recording in a packet based network
Fully distributed message storage facilities in a distributed sw
Function controller serving as an automatic telephone answering
Gateway for connecting telecommunications networks and a...
Gift article voice greeting system
Graphical computer interface for an audio conferencing system
Graphical message notification
Graphical user interface and method for displaying messages
Greeting and schedule integration arrangement