| 摘要 |
PROBLEM TO BE SOLVED: To process an analog telephone signal in POTS (basic telephone system) interface so as not to cause disturbance.SOLUTION: A device (POTS module 200) includes an interface (POTS IF210) for transmitting analog telephone signals. Furthermore, in the device, a compensation circuit is provided, ham signals in the analog telephone signals are detected, a reversed phase compensation signal (CMP) to the ham signal is generated, and the compensation signal (CMP) is combined to an analog telephone. |
