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Bi-directional test system for network analysis

  • US 6,859,828 B1
  • Filed: 02/25/1997
  • Issued: 02/22/2005
  • Est. Priority Date: 02/25/1997
  • Status: Expired due to Fees
First Claim
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1. A method for analyzing a bi-directional communication path connecting a headend station to a remote station, said communication path being used for sending and receiving messages, messages in a forward direction being sent by modulating a carrier at a forward frequency and messages sent in a return direction being sent by modulating a carrier at a return frequency, said method comprising the steps of:

  • sending a sign-on message in said forward direction from said headend station;

    monitoring said return frequency for a response message, said response message being sent in response to said sign-on message being received by a remote unit connected to said bi-directional directional communication path, said monitoring step including determining a power level for signals received at said return frequency; and

    sending an error message in said forward direction if no response message is received on said return frequency and said power level is greater than a threshold value.

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