| 摘要 |
<p>A subscriber line interface circuit can achieve accommodation of subscribers of a plurality of circuits (down-sizing) and low cost. The subscriber line interface circuit includes a first integrated circuit including speaking power supply means for supplying an electrical power to a telephone set and A/D converter means for converting an analog voice signal output from the telephone set into a digital signal, the first integrated circuit being independent for each channel, and a single second integrated circuit including multiplexing multiplexing the digital signal from the A/D converter means of each of the first integrated circuit and digital signal processing means for digital-signal-processing of the multiplexing means. <IMAGE></p> |
