Active surge rejection circuit
Active switch replacement using a single point code
Active talker display for web-based control of conference calls
Ad ringer
Ad ringer
AD-HOC conferencing method
Adaptable alarm interface unit for use with electronic automobil
Adaptable line driver interface for digital telephone systems
Adaptable method and system for message delivery
Adaptable personnel supervisory system with automatic fee collec
Adaptable subscriber unit for interactive telephone...
Adaptation of the call sequence by analysis of the history...
Adapter card implementing a time-shared digital signal...
Adapter circuitry for computers to support computer telephony
Adapter for connecting a modem to a digital private branch excha
Adapter for coupling together two subscribers' lines to a teleph
Adapter for interfacing a work station terminal to a key telepho
Adapter for mounting a portable telephone on a vehicle
Adapter for portable telephone usable as mobile telephone in...
Adapter for portable telephone usable as mobile telephone in...