One field became of focal importance recently; incorporates body sensor networks (BSNs) for monitoring patient's bio-activities. In present situation when patient's monitored-vital signs showed abnormal behaviour health provider must be informed immediately. But, unfortunately, for some reasons the information delivery may be slower than needed when time in this case is very important, and crucial. In addition to that, most of recent BSNs are based on using an expensive networks infrastructures, and it won’t work properly without availability of stable internet connections. In this paper, a system is designed for monitoring patients' body temperature, heart rate, and blood pressure, as well as issuing an instant warning via SMS/GSM in emergence. The modelled system ran very well and achieved an accurate reading, and an excellent time response with an overall average time for SMS deliver and doctor feedback of 16 ±2 seconds.
