Line impedance matching using dynamically generated transfer...
Line in use detection
Line in-use indicator for a telephone set and facsimile machine
Line information security interface for TAPI service provider
Line interface battery feed arrangements with PTC resistors
Line interface circuit
Line interface circuit
Line interface circuit
Line interface circuit
Line interface circuit
Line interface circuit
Line interface circuit
Line interface circuit with event detection signaling
Line interface unit for caller-controlled receipt and delivery o
Line interface unit retrofit circuit
Line interface with analog echo cancellation
Line interface with gain feedback coupled matching impedance
Line interface, apparatus and method for coupling...
Line isolation device for asymmetrical digital subscriber line
Line loss tester