| 摘要 |
A facsimile apparatus including a cordless telephone set having a remote unit includes photocouplers for detecting whether the handset of a remote unit is at an off-hook condition or not. When the handset is at an off-hook condition, a signal indicating this state is transmitted to a control CPU via the photocouplers and a pair of phototransistors. The control CPU applies a signal from a telephone line monitoring transformer that monitors the condition of a telephone line via a FAX modem. When detection is made that the handset of the remote unit is at an off-hook condition even though the telephone line is under a condition where the communication has terminated, the handset of the remote unit is set to an on-hook condition through a base unit.
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