Telephone system having reduced sensitivity to RF interference and related methods

A telephone to be connected to a wireline and having reduced sensitivity to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device comprising:

• a housing;
• a transmit amplifier carried by said housing;
• a receive amplifier carried by said housing;
• a hybrid circuit connected between said transmit and receive amplifiers and the wireline;
• an audio input transducer connected to said transmit amplifier;
• an audio output transducer connected to said receive amplifier;
• at least one RF shield surrounding said audio input transducer and said audio output transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device;
• at least one RF audio input filter element connected to said audio input transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device;
• and
• at least one RF audio output filter element connected to said audio output transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device.

A method for reducing sensitivity of a telephone to be connected to a wireline to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device, the telephone comprising a transmit amplifier, a receive amplifier, an audio input transducer connected to the transmit amplifier, and an audio output transducer connected to the receive amplifier, the method comprising:

• positioning at least one RF shield to surround the audio input transducer and the audio output transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device;
• connecting at least one RF audio input filter element to the audio input transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device;
• and
• connecting at least one RF audio output filter element to the audio output transducer for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device.