Data communication apparatus and method for switching from g3 an

Detecting unauthorized modification of communication unit based

Device for managing voice data automatically linking marked mess

Dial pulse selection

Digital audio interface in a mobile telephone

Digital dictation system

Digital dictation system having a central station that includes

Directory assistance system

Distributed bidirectional communication network structure in whi

Distributed control system having central control providing oper

Distributed database architecture and distributed database manag

Distributed database architecture and distributed database manag

Distributed directory for information stored on audio quality me

Distributed processing method for checking status of processor i

Dynamic graphical analysis of network data

Dynamic graphics arrangement for displaying spatial-time-series

Dynamic restoration process for a telecommunications network

Dynamic tone-administration

Dynamically configurable telephone

Dynamically modifiable call processing methods and apparatus