网关设备H.248协议的实现

Implementation of H.248 Protocol for Gateway

通过对H.248协议、软交换技术和数字程控交换机技术的分析,对H.248协议内容进行了详细描述,对网关的软件、硬件体系结构提出了具体的设计思路及方案,针对软件的可扩展性,提出了分层结构的设计思想,并对软硬件各种组成模块的功能进行了详细介绍。提出了H.248协议在网关设备的设计思路及实现方案,基于标准要求,对注册及呼叫流程提出了具体的实现方法,并针对网关在实际应用中的部署环境,提出了网关双归属实现方案,提高了设备的稳定性及可靠性。

Through an analysis of H. 248 protocol, sofiswitch and TDM technologies, the contents of H. 248 protocol are described, the specific design scheme of the software and hardware architecture of gateway is proposed. For software scalability,a layered design model is provided, the functions of all sub-models are described, and the design and implementation schemes of H. 248 protocol in gateway are proposed. The specific implementation method of registration and call processes are given based on standard require- ment, and according to the environment of application, a dual - homing scheme is proposed, which enhances the stability and reliability of gateway equipment.