| 摘要 |
PURPOSE: A method for calling by connecting a call to an external phone set through an inter-phone in home or an office is provided to allow a user to be automatically connected to a designated phone number of an external terminal when an inter-phone is ringing in his/her absence in home or the office. CONSTITUTION: A dial tone function and an ON/OFF function of a telephone line connection line and a specific phone number setting LCD are added to a current inter-phone. When an inter-phone is paged, A dial tone is made to a specific phone number so as to automatically originate a call by using a phone in home to be connected to a CDMA terminal or an office phone number, so that a user can directly make call communication with a visitor. A picture or an image provided from the inter-phone is transmitted to a mobile phone to perform monitoring while the user is connected with the visitor.
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