Because Gateway serves many users, there are some related problems to besolved, such as the allocation and management of multiple calls, the synchronization of multiplethreads, the state transference and time-out proc...Because Gateway serves many users, there are some related problems to besolved, such as the allocation and management of multiple calls, the synchronization of multiplethreads, the state transference and time-out processing. To solve these problems,key technologies inour implementation will be proposed, which are important to the stability and efficiency of theGateway. At last, the test of our Gateway is shown and analyzed.展开更多
文中从一种VOIP[1-3](Voice Over Internet Protocol)系统设计方案入手,介绍基于VxWorks[4]下的VOIP系统开放式软件通信体系结构,实现VOIP系统中各子系统之间的实时通信,重点实现语音信号处理子系统中信号处理板和网络间的实时通信。文...文中从一种VOIP[1-3](Voice Over Internet Protocol)系统设计方案入手,介绍基于VxWorks[4]下的VOIP系统开放式软件通信体系结构,实现VOIP系统中各子系统之间的实时通信,重点实现语音信号处理子系统中信号处理板和网络间的实时通信。文中给出VOIP的系统软件总体的设计和实现,在实时操作系统VxWorks平台下,给出系统的串口设备驱动程序以实现通信功能。展开更多
Users, especially enterprise users have more requirements for services along with the fast development of communication technologies and the enterprises ’ communication infrastructure construction. Unified communicat...Users, especially enterprise users have more requirements for services along with the fast development of communication technologies and the enterprises ’ communication infrastructure construction. Unified communications service provides a solution for the convergence of voice, data, and multimedia. It allows users to enjoy various communication services anytime and anywhere flexibly. A superior unified communications service platform has VoIP communication, status presence and Instant Messaging (IM) service capabilities, and supports a lot of services. Meanwhile, the unified communications service platform provides open service interfaces for the seamless convergence with enterprise infrastructure.展开更多
VoIP (Voice over IP) is a rapidly growing area with great market potential. To promote it for both commercial and research purposes, a prototype VoIP system based on state-of-the-art Motorola communication techniques ...VoIP (Voice over IP) is a rapidly growing area with great market potential. To promote it for both commercial and research purposes, a prototype VoIP system based on state-of-the-art Motorola communication techniques has been developed. It is a gateway system integrating a PBX and a VoIP module. All components that H.323 defines to support VoIP are implemented in the VoIP module, though in a simplified manner. As an embedded system, the system features real timeness and task distributiveness. A number of additional techniques are used to improve the performance, including noise suppression, zero copy, and buffer structure optimization. When refined in interoperability, the system will also readily serve as a product.展开更多
文摘Because Gateway serves many users, there are some related problems to besolved, such as the allocation and management of multiple calls, the synchronization of multiplethreads, the state transference and time-out processing. To solve these problems,key technologies inour implementation will be proposed, which are important to the stability and efficiency of theGateway. At last, the test of our Gateway is shown and analyzed.
文摘文中从一种VOIP[1-3](Voice Over Internet Protocol)系统设计方案入手,介绍基于VxWorks[4]下的VOIP系统开放式软件通信体系结构,实现VOIP系统中各子系统之间的实时通信,重点实现语音信号处理子系统中信号处理板和网络间的实时通信。文中给出VOIP的系统软件总体的设计和实现,在实时操作系统VxWorks平台下,给出系统的串口设备驱动程序以实现通信功能。
文摘Users, especially enterprise users have more requirements for services along with the fast development of communication technologies and the enterprises ’ communication infrastructure construction. Unified communications service provides a solution for the convergence of voice, data, and multimedia. It allows users to enjoy various communication services anytime and anywhere flexibly. A superior unified communications service platform has VoIP communication, status presence and Instant Messaging (IM) service capabilities, and supports a lot of services. Meanwhile, the unified communications service platform provides open service interfaces for the seamless convergence with enterprise infrastructure.
文摘VoIP (Voice over IP) is a rapidly growing area with great market potential. To promote it for both commercial and research purposes, a prototype VoIP system based on state-of-the-art Motorola communication techniques has been developed. It is a gateway system integrating a PBX and a VoIP module. All components that H.323 defines to support VoIP are implemented in the VoIP module, though in a simplified manner. As an embedded system, the system features real timeness and task distributiveness. A number of additional techniques are used to improve the performance, including noise suppression, zero copy, and buffer structure optimization. When refined in interoperability, the system will also readily serve as a product.
