The teleoperation of complex systems became possible and cheaper by the adoption of Internet network as a communication channel. This induces specific problems due to the constraints of communications such as round trip time delay (RTT), bandwidth limitation, channel congestion, availability and transmitted information losses or errors. All these parameters are attributes of the Quality of Service (QoS) offered by the communication network. Predicting the RTT plays a major role in the dynamic enhancements for many applications such as telemedicine or mobile telerobotics. So the ideal approach concerning this important parameter in internet must be strictly studied. This paper proposes to use the Holt-Winters method to explore real-time predicting of RTT. This technique is largely used for the analysis and treatment of time series data. Real measurements of the RTT were taken between 4 geographically distant nodes. The obtained results confirm the efficiency and precision of the proposed method.