IP multimedia Subsystem (IMS) is a set of specifications that describes the Next Generation Networking (NGN) architecture for implementing IP based telephony and multimedia services.
IP多媒体子系统(IMS)是一组规范，描述用于实现基于IP的电话和多媒体服务的下一代网络(NGN)体系结构。
To improve the QoS of NGN is very necessary.
提高NGN的服务质量势在必行。
NGN is a hot topic in China telecommunication industry.
NGN在我国已经成为通信界讨论的一个热点。
NGOSS is a good support to NGN. Billing subsystem is the key of it.
NGOSS是适应NGN的新一代运营支撑系统，计费子系统是其核心所在。
It is proved that the strategy can improve the QoS of NGN in a way.
实验表明该策略能在一定程度上提高网络的服务质量。
Thus, NGN security issue is a topic that is worthy of researching deeply.
因此，NGN的安全问题是一个值得深入研究的课题。
Therefore, the support to emergency communication is another challenge for NGN.
因此，对于应急通信的支持是下一代网络面临的又一个挑战。
Soft switch, as the core technology of NGN is drawing the industry's attention.
软交换作为下一代网络的核心技术，受到业界的普遍关注。
Media server that provides special media resources is an important device in NGN.
媒体服务器是下一代网络中的重要设备，负责提供专用的媒体资源。
NGN is the complete new network which supports voice, data, fax and video services.
下一代网络是集话音、数据、传真和视频业务于一体的全新网络。
In this paper, we demonstrate the character of NGN and relative protocols based on NGN.
本文介绍了NGN的网络特点及其相关协议。
Finally, it makes optimistic forecast about the application future of open API for NGN.
最后，对于开放式API技术在下一代网络中的应用前景做出了乐观的预测。
Service logic execution environment (SLEE) is the key part for service provision in NGN.
业务逻辑执行环境是下一代网络中业务提供的关键部分。
With the coming of NGN, the telecom network will come into the era of packets network based on IP.
随着向下一代网络的演进，电信网络会逐渐过渡到基于IP 的分组核心网络。
In NGN, service management server is one important function entity of service support environment.
下一代网络(NGN)中，业务管理服务器是业务支撑环境的核心组件之一。
Recent years Softswitch and NGN have become research hotspots in academic and telecommunication areas.
软交换和下一代网络是近年来学术界和通信领域研究的热点之一。
Furthermore, the conception of virtual communication provider was introduced into NGN communication network.
同时，下一代网络引入了虚拟运营的概念。
The NGN adapts the layered structure as service layer, control layer, media transport layer and access layer.
下一代网络采用分层的结构，分为松散耦合的业务层、控制层、媒体传输层和接入层。
Softswitch is core entity of NGN, which functions real-time service control, call control and connect control.
软交换作为NGN的核心实体，为下一代网络提供具有实时性要求的业务呼叫控制和连接控制功能。
SIP is naturally in harmony with NGN and it is one of the most important session control protocols in NGN network.
SIP与NGN网络具有的良好契合性，使其成为NGN 网络中最为重要的会话控制协议。
NGN could provide more abundant operations than PSTN network, and could also realize amalgamation of many networks.
NGN能比原有的PSTN网络提供更加丰富的业务能力，并且能够实现多网的融合。
Telecommunications network (NGN) relates to IP technology, multimedia technology, transfer technology and other fields.
电信网络(NGN)涉及到IP技术、多媒体技术、传输技术等多个领域。
Based on network situation of CTT Guizhou Branch, the paper gives some detailed proposals and a feasible solution of NGN.
以贵州铁通分公司的网络现状为例，提出了建设NGN网络的规划及建议，并给出合理的解决方案。
The paper firstly introduces the conception and function model of NGN, and describes the key technology of NGN, Soft Switch.
本文介绍了下一代网络的概念和功能模型，以及其核心技术——软交换技术；
SIP protocol will become the core control protocol of the NGN, and gets great significance for large-scale commercial of NGN.
SIP协议将成为NGN中的核心控制协议，对NGN的大规模商用具有十分重要的意义。
ENUM is a technology protocol created by the IETF that will tie the tradition telephone network with the Internet in the NGN.
在下一代网络中，由IETF定义的技术协议ENUM是传统电信网和互联网的连接纽带。
Clustered media server is a kind of key equipment in NGN multimedia service platform. Security issue is very important in NGN.
媒体服务器是NGN多媒体业务平台中的关键设备，NGN的安全至关重要。
SS (Soft Switching) technology is the key technology of NGN. It is inevitable trend to apply it in traditional telecom network.
软交换是NGN的关键技术，在传统的电信交换网络中，引入软交换技术进行网络的优化和演进是必然趋势。
NGN, characterizedbythe separation of services from control and transport, creates a framework for the future network convergence.
下一代网络业务、控制、承载、接入分离的思想为未来网络融合提供了统一的架构。
As the author has a good knowledge of SIP, the paper indicates how to create SIP services in the NGN service platform in the second part.
作者在对SIP协议有了一定了解之后，本文第二部分重点研究了如何在NGN业务平台上进行SIP业务开发。
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