This is designed to be installed on the gateway can be applied to a variety of card readers, in my office to check the visitor relates to an access control information line system capable of opening the door, in conjunction with the phone in the office in the information line system to control a door, a variety of shapes to control the opening and closing of the door card reader card that may be inserted into the reader insertion portion; and the office in the phone and microphone and speaker phone for the call, dial buttons, On-hook button for the call, is equipped with a display that indicates the operation status can call the office interior and trunk extension or telephone directory information; By phone signals in the office doors opening and closing the door to be opened; is configured to include, and the possible use of a phone call with the guidance office inside the door by the office of internal phone signal is opened, and the call is characterized in that the ends. And the configuration can be various types of card reader device is attached to control access by such construction is simple, call the office staff to be directly guided visit through the city and out of the phone in my office visitors and employees Doors The door can be opened easily by controlling access to allow.
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