The utility model relates to a built -in access control system's communication cabinet, including the cabinet body and cabinet door, be equipped with access control system on the cabinet door, be equipped with door magnetic switch between the cabinet door and the cabinet body, be equipped with vibration sensor on the cabinet door, the last alarm that is connected with of vibration sensor, the internal battery that still is equipped with of cabinet, the utility model discloses an advantage: setting through access control system, the high cube container door can be carried and intelligent setting the when locking is opened, can only open through equipment owner maintenance person person when making the cabinet door open, the corresponding access control system's that also can set for throughequipment owner maintenance person person mandate card or password are opened, the security of the internal operation of cabinet has been realized, and closing or opening through the real -time stateof looking over the cabinet door of door magnetic switch, be favorable to reminding fortune dimension personnel, guarantee that the real -time locking of cabinet door is on the cabinet body, and thesafety performance is improved, and link to each other door magnetic switch with alarm, when the cabinet door is in the open mode, can send to fortune dimension personnel and report an emergency and ask for help or increased vigilance the suggestion, and the safety performance is improved.