| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for controlling power dissipated in a subscriber line interface circuit that includes measuring the power parameter of the subscriber line interface circuit during a ringing cycle, comparing the measured power parameter to a target power parameter and adjusting, at least one ringing parameter of a ringing signal generated by the subscriber line interface circuit based on the comparison. SOLUTION: A line card includes the subscriber line interface circuit operating so as to generate the ringing signal, and a subscriber line audio-processing circuit operating so as to measure the power parameter of the subscriber line interface circuit during the ringing cycle, compare the measured power parameter to the target power parameter, and adjust at least one ringing parameter of the ringing signal based on the comparison. COPYRIGHT: (C)2011,JPO&INPIT
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