5 volts single power supply ADSL analog front end design
Acoustic communication terminal apparatus and recording...
Acoustic coupler and data transmission apparatus using the same
Acoustic coupler for high-speed modem
Acoustic coupling product label
Adaptable subscriber unit for interactive telephone...
Adapter circuitry for computers to support computer telephony
Adapter for connecting a modem to a digital private branch excha
Adapter for interfacing a work station terminal to a key telepho
Adaptive equalizer
Adaptive pilot tone location in a transmission system
Adaptive voice and data bandwidth management system for multiple
Adjunct arrangement for a telecommunication device
Administrative control and security of modems
ADSI web browser for retrieving internet data files
ADSL filter
Advanced intelligent network interacting with customer premises
Alarm system interface
Alphanumeric keyboard with telephone dialing capability
Alphanumeric message composing method using telephone keypad