H - Electricity – 04 – J
Patent
H - Electricity
04
J
259/42.6
H04J 3/17 (2006.01)
Patent
CA 1290868
ABSTRACT OF THE DISCLOSURE ABSTRACT The device filters a signal in a telecommunications link into a voice frequency signal and a data frequency signal and compares samples of the magnitude of each to provide an indication of whether the sample is a voice sample, a data sample, or neither a voice nor a data sample. The device tracks the relative number of voice and data samples and, based on this, enters a voice or a data mode. When in voice mode, the device times the duration of voice on the telecommunications link and, optionally, may take down the communication link if the voice excedds a predetermined maximum duration.
613952
Cecarelli Maurizio
Chiu Robert S.k.
Colbourn Robert W.
Mccarthy Tetrault Llp
Unitel Communications Inc.
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