To surely report a hold-cancel request to a communication terminal by reporting to a speaker to that effect when a signal from an outside line is detected during extension speaking and that signal shows the holding-cancel request from an outside line under holding.

When a base unit 11c tries to speak with a hand set 11b during speaking of an outside line, the base unit 11c operates the call of the hand set 11b from an operation display part 4, and an NCU 11 requests calling to the hand set 11b to a cordless telephone control unit 11a through a cordless telephone control signal and sounds a ring back tone. When the hand set 11b responds to this tone, a response from the unit 11a is received by the NCU 11, the extension speaking between the base unit 11c and the hand set 11b is enabled while keeping an outside line holding state, and it is commanded to a CCU 10 by the NCU 11 to perform the detection of the signal on the line through a MODEM 10a. When there is a cancel request from the outside line on a held line, this request is detected and reported by inserting a sound so that the cancel request can be easily discriminated even without watching the device. Further, the cancel can be reported from the outside line and telephone charges can be economized as well.