Control method for cordless telephone.

摘要

There is disclosed a control method for a cordless telephone system including a main apparatus connected to a telephone line and having a line control function, a plurality of stationary apparatuses connected to the main apparatus and each having a radio transmitter/receiver, and portable telephones capable of communicating with the stationary apparatuses through a radio channel. In this method, when the main apparatus receives a simultaneous calling request signal from one portable telephone through a given stationary apparatus, it transmits a simultaneous calling request signal to the other portable telephone which is not in use on the basis of the received simultaneous calling request signal through a corresponding stationary apparatus, receives, from the other portable telephone through the corresponding stationary apparatus, a response signal including an extension number of the other portable telephone which received the simultaneous calling request signal, and transmits a response signal including the extension number of the other portable telephone which responded to simultaneous calling to one portable telephone which requested simultaneous calling through the given stationary apparatus. The portable telephone which requested simultaneous calling displays the extension number of the other portable telephone which responded simultaneous calling.