Telemetry system with improved verification of telemetry interfa
Telemetry system with suppressed ringing connection
Telephone call detecting circuit and a method of remotely access
Telephone-linked commodity-billing method
Telephonic information communication method and apparatus
Telephony network having no-ring telemetry call aborted in favor
Time independent data transmission system having capability for
Unit for the bidirectional detection and transmission of...
Vehicle parking system
Vending system with a given number of compartments