Data base creation in stored program controlled switching...

Data channel scheduling discipline arrangement and method

Data collection and metering system

Data communication bus structure

Data communication method, mobile machine, and radio base...

Data communication receiver and transfer apparatus

Data communication system

Data communication system

Data communication system

Data communication system

Data communication system employing a series loop

Data communication system employing a series loop

Data communication system employing a series loop

Data communication system employing a series loop

Data communication system using spectral overlay

Data communication system with key data bits denoting...

Data communication systems

Data compression apparatus and method therefor

Data element switch

Data exchange systems