"To decrease the waiting since the patients’ call, reduce the time consumption of communications between nursing personnel and medical technologists, pharmacists and enhance the satisfactions of health care workers and patients, the Hospital develops the Cloud Smart Call Bell System. It adopts the VoIP (Voice over Internet Protocol) technology which converts the traditional speech signals to IP packet format, transmits packets to the destination via Internet and converts these packets to speech and signals for output, and integrates the system and nursing trolleys with the host, control units, plural call devices and an Internet Protocol-Private Branch Exchange (IPPBX). After a patient pushes the button of the call bell, the system will automatically trigger a signal to the nursing station and respond to the phone on the nursing trolley and the mobile phone of the nurse on duty. The principal nurse can communicate with the patient immediately by the mobile phone or the phone on the nursing trolley, and then provide required services. In addition, to find the principal nurse of each hospitalized patient for medical technologists, pharmacists, and other personnel with the Cloud Smart Call Bell System, the shift arrangement of nursing personnel in the nursing station has been integrated with the System. Medical technologists, pharmacists, and other personnel can call the corresponding principal nurse by dialling with the bed number of patient, and then they can communicate through the mobile phone of the System directly to reduce the time consumption and inconvenience of phone putting through and waiting with the traditional telephone. Through the Cloud Smart Call Bell System developed by the Hospital, nursing personnel can receive and respond patients’ calls more rapidly and timely with the rings of the host, the nursing trolley and the mobile phone. Moreover, based on the integration of the System and the shift arrangement of nursing personnel, other personnel can co