ISO/IEC 14476-4:2010提供了一种QoS管理规范，用于实现双工多播传输连接所需的QoS。为此，本文描述了双工多播传输连接中的QoS管理操作，如QoS协商、QoS监控和QoS维护。ISO/IEC 14476-4:2010是ECTP-3（ITU-T Rec.X.607 | ISO/IEC 14476-3）的组成部分。所有协议组件，包括ITU-T Rec.X.607 | ISO/IEC 14476-3中规定的数据包格式和协议程序，在ISO/IEC 14476-4:2010中也有效。

ISO/IEC 14476-4:2010 provides a specification of QoS management for accomplishing desirable QoS for a duplex multicast transport connection. For this purpose, it describes the QoS management operations in duplex multicast transport connection such as QoS negotiation, QoS monitoring and QoS maintenance. ISO/IEC 14476-4:2010 is an integral part of ECTP-3 (ITU-T Rec. X.607 | ISO/IEC 14476-3). All of the protocol components, including packet formats and protocol procedures specified in ITU-T Rec. X.607 | ISO/IEC 14476-3 are also valid in ISO/IEC 14476-4:2010.