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INTERCOM TRANSCEIVER WITH FIBER OPTIC LINK

  • US 20130287400A1
  • Filed: 03/13/2013
  • Published: 10/31/2013
  • Est. Priority Date: 04/26/2012
  • Status: Active Grant
First Claim
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1. A system for carrying a downstream optical signal and an upstream optical signal on a fiber optic link between a first transceiver unit coupled to a first intercom system and a second transceiver unit coupled to a second intercom system, the system comprising:

  • a first transceiver unit that receives an input communication signal from at least one external communication device at an electrical input port;

    a transmitter that converts the input communication signal into an optical signal and transmits the optical signal as a downstream optical signal on a fiber optic link coupled between the first transceiver unit and the second transceiver unit;

    a receiver at the second transceiver unit that receives the downstream optical signal and converts the downstream optical signal into an electrical communication signal;

    a first circuit in the second transceiver unit that determines whether the second transceiver unit couples the electrical communication signal to a two wire intercom circuit or a four wire intercom circuit; and

    an output port on the second transceiver unit that outputs either a two wire intercom signal or a four wire intercom signal to an external communication device based on the first circuit determination.

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