New Nurse Call System is a nurse call system that is constantly developing from the exiting NC Series, which adopts digital signal processing technology, or DSP, making conversations between patients and nurses clearer by cutting the surrounding sound when talking and reducing the echo signal. Nurse Call System is a full duplex communication that allows instant response without having to wait for the other party to finish speaking. There is no limit to the number of patient calls and can be called at the same time. In addition, each point of call signal system can be added independently follow to the hospital area and the peripheral design of system for the patient room has independent CPUs. Even if the control point is damaged, nurses or staff are also able to know if the patient has asked for help. By the signal lights at the head of the bed or in front of the room transmitting