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Adaptive transmission line impedance matching device and method

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Automatic balancing circuit for longitudinal transmission system

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
Patent

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Balanced transmission device

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Circuit for electronically generating a call impedance

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Communication interface having combined shaping of receive...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Compatibility circuit for telephone headset

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Data signal attenuator and systems and methods for using same

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Generic line impedance matching circuit using decomposed...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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High performance telephone instrument with combination pulse and

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Impedance blocking filter circuit for digital subscriber...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Impedance compensation in interfacing a modem to a telephone...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Interface for a telephone set

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
Patent

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Low-pass filtering device with integrated insulator and...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Method for automatically adapting levels of signals...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Office line interface circuits

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
Patent

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Programmable plain old telephone line impedance matching...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Regulator for impedance balance of a transmission wire pair

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Signal line driving circuit with self-controlled power...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Speech circuit for subscriber telephone apparatus

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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Subscriber line interface circuit having an impedence synthesize

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing
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