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Digital signal processor-based telephone test set analyzing and displayed multiple signal parameter data for terminal mode and line monitor mode operation

  • US 6,215,854 B1
  • Filed: 12/07/1998
  • Issued: 04/10/2001
  • Est. Priority Date: 06/30/1997
  • Status: Expired due to Fees
First Claim
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1. A craftsperson'"'"'s test set for testing and conducting communications over telecommunication link comprising:

  • a telecommunication link connection port through which the test set is connectable with said telecommunication link;

    a user interface through which said craftsperson may input and receive information signals associated with the operation of said test set, said user interface a manual input device, visual display, and an audio interface through which said craftsperson may input and receive acoustic signals; and

    a programmable digital signal processing unit, including signal format translation circuitry coupled with said telecommunication link connection port and said user interface, and containing a signal processing routine that is operative to controllably digitally process signals that have been received from said telecommunication link and have been digitally formatted by said signal format translation circuitry for delivery to said user interface, and to controllably digitally process signals that have been received from said user interface and have been digitally formatted by said signal format translation circuitry for application delivery to said telecommunication link connection port for application to said telecommunication link, and to display parametric information relating to either or both of said signals that have been received from said telecommunication link and have been digitally formatted by said signal format translation circuitry for delivery to said user interface, and signals that have been received from said user interface and have been digitally formatted by said signal format translation circuitry for application delivery to said telecommunication link connection port for application to said telecommunication link, wherein said signal processing routine contained in said programmable digital signal processing unit is operative to analyze and display parametric information of prescribed user feature analog modem signals received from said telecommunication port for presentation to said craftsperson by way of said user interface, and including an embedded echo cancellation routine for full-duplex, dual direction acoustic functionality.

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