Abstract: A charge control circuit is used for a cordless telephone system which includes a base unit having a quick charger and a trickling charger and a handset containing a battery. The charge control circuit comprises a connection detector, a full-charged condition detector, a timer and a controller. The connection detector detects the connection of the handset to the base unit to start the charging operation for the battery. The full-charged condition detector detects the full-charged condition of the battery. The timer has a predetermined period of time and starts it counting operation after the full-charged condition detector detects the full-charged condition of the battery. The controller controls the battery to be quickly charged with the quick charger after the timer counts up the predetermined period of time.

Abstract: A system for enabling switching between a cordless telephone, including a fixed unit and a portable unit, and an ordinary telephone which may be connected to the cordless telephone through a subscriber network. The portable unit portion of the cordless telephone may be connected to an ordinary telephone, even when power is not available to the fixed unit, by providing selective switching to the subscriber network, which provides power to the telephone unit which is part of the fixed unit.

Abstract: A cordless telephone having a fixed unit and a portable unit which are capable of exchanging an identification (ID) signal assigned to the telephone with each other is disclosed. The portable unit includes a receiver circuit which in turn includes a low-frequency section. A cut-off/attenuation circuit, a logic circuit and a timer circuit are built in the low-frequency section of the receiver circuit. The cut-off/attenuation circuit cuts off or attenuates the ID signal when a conversation is under way. The logic circuit controls the cut-off/attenuation circuit while the timer circuit determines a period of time for the ID signal to be cut off or attenuated. The cut-off/attenuation circuit is enabled after the transmission of the ID signal over a predetermined period of time as determined by the timer circuit, thereby cutting off or attenuating the ID signal returned from the fixed unit to the portable unit.