Abstract:A schematic design is presented for a stand-alone test device to measure all aspects of echo at the subscriber location'of dial lines in telephone networks. The proposed architecture is based on off-the-shelf components such as a general purpose PC and one of the available digital signal processing (DSP) boards with minimum additional hardware. Echo aspects are identified for measurements and the firmware (both hardware and software) of the design are presented. Although specific hardware components are chosen… Show more
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