Telephone terminal device with function for preventing unnesessary utilisation of telephone line by insolicited facsimile signal

摘要

In a telephone terminal device, for example, a telephone answering device, when the device receives an inadvertent facsimile signal while it is in operation, the telephone line is disengaged via a facsimile signal detecting means for the purpose of preventing unwanted utilization of the telephone line and unnecessary consumption of the recording medium.