Data preparation for traffic track usage measurement

Data processing system for communications network

Data processing system for communications network

Data processing system having a programmable modem and method th

Data processing system having a programmable modem and...

Data processing system with real time priority updating of data

Data processing system, method and program for constructing host

Data radio communication apparatus and system

Data recording system for IP telephone communication

Data request router for use with emergency public safety answeri

Data search method in key telephone system

Data signal attenuator and systems and methods for using same

Data station termination circuit

Data storage apparatus

Data terminal for telephone circuits

Data terminal having program language support library, and relat

Data transfer device

Data transfer system

Data transfer system and handheld terminal device used therefor

Data transmission and storage