LTE based Broadband Trunking Communication(B-TrunC) system—Technical requirements for interface(Phase 1)—Interface between trunking core network and dispach console
全国通信标准化技术委员会(SAC/TC 485)
本标准规定了基于LTE技术的宽带集群通信（B-TrunC）系统的集群核心网到调度台接口的接口模型、信令流程、SIP信令消息格式、SIP信令消息、SIP信息单元，并给出了Ptt-Extension扩展头和MIME扩展消息体的语法描述以及扩展消息体的XML Schema定义。
本标准适用于基于LTE技术的宽带集群通信（B-TrunC）系统的调度台和系统设备。
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