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Achieving the required Quality of Service (QoS) is an important requirement in a communication network. In recent years, VSAT technology has become one of the popular means to interconnect with people around the world. However, VSAT satellite network has high latency constraint and provides low and limited bandwidth. These limitations caused network congestion when the bandwidth-intensive real-time interactive applications are running over the low bandwidth link. High packet drop incurred by the network congestion leads to degradation of the QoS of the communication link. Therefore, this paper proposes a real-time adaptive packet compression scheme especially for a congested low bandwidth network. This scheme is intended to further enhance the QoS of the low bandwidth network and improve the user experience. Simulation results demonstrate the effectiveness and efficiency of the proposed scheme in enhancing the QoS of the congested low bandwidth network.