下一代网络业务层接口方案的探讨

本文从业务层的角度入手，首先对下一代网络的业务支撑环境作了分析；接着对NGN中的可能存在的几种业务接口进行了分析与比较，提出Parlay API是NGN中一种较为理想的面向第三方业务生成接口，进一步讨论了分布式中间件CORBA作为Parlay API实现平台的主要优点；然后重点分析了NGN业务层演进中各阶段的业务提供方式，并对各业务提供方式的发展及其接口方案作了进一步的分析；最后讨论了传统IN在向NGN的主要演进思路．     

下一代网络业务层接口方案的探讨

本文从业务层的角度入手,首先对下一代网络的业务支撑环境作了分析;接着对NGN的可能存在的几种业务接口进行了分析与比较,提Parlay API是NGN中一种较为理想的面向第三方业务生成接口,进一步讨论了分布式中间件CORBA作为Parlay API实现平台的主要优点;然后重点分析了NGN业务层演进中各阶段的业务提供方式,并对各业务提供方式的发展及其接口方案作了进一步的分析;最后讨论了传统IN在向NGN的主要演进思路。     

NGN业务网间互通模型探讨

根据ITU-T将NGN划分为业务层、承载层和传输层。依据NGN的网络分层结构,确立NGN与PSTN、H.323 VoIP网络以及IN网络的互通模型,分析了NGN和上述各种网络在不同层面上实现互通的要求和方法。     

下一代网络(NGN)互通框架模型的探讨

主要从网络分层的角度探讨了NGN和各种网络之间互通的实现方法。首先给出了NGN的互通功能模型，然后重点探讨了NGN与PSTN、H．323 VoIP网络以及IN网络的互通模型，分析了NGN和上述各种网络在传输层、交抛佳路层、应用层和网络资源4个层面上实现互通的要求和方法。     

Next Generation Network Service Provision Mode and Its Developing Trend

The provision mode of the telecommunication service has experienced an evolving process, and showing the developing trend from distributed to centralized, from integrated to separated, and from closed to open. To suit this trend, there will be three provision modes as Session Initiation Protocol (SIP) server, Open Service Access (OSA) application server and intelligent network(IN) in Next Generation Network (NGN), provides all kinds of services and applications to the subscribers. With the popularity of broadband access and Internet, the NGN will provide single telecommunication service and act as the important national infrastructure to offer various information services to the subscribers. The service provision mode will be more open, diversified, and individualized.     

发展NGN业务应注意的关键问题

下一代网络(NGN)的发展虽然克服了传统网络对业务发展的局限性,但其自身的业务发展问题仍尚未解决。文章着重阐述传统网络的缺陷、NGN的结构和NGN发展的基本要求,提出发展NGN业务应注意的关键问题。     

智能网业务(1)

本文对智能网(IN)业务进行了介绍。为描述智能网业务,引入了业务性能(或称业务特征)的概念,叙述了业务和其性能之间的关系,成为进一步理解智能网业务的基础。然后介绍了ITU-T Q.1200建议的INCS-1的25种目标的IN业务,38种目标的IN业务性能的含义。 本文又从控制关系等方面引入了A型和B型两种IN业务类型的概念,同时对此进行了说明。     

NGN业务发展的思考

随着NGN产业化进程的加速。NGN业务逐渐成为新的研究热点。本文在总结NGN业务特点基础上，分析了价值链中各角色面临的新挑战，最后对其市场定位问题进行了探讨。     

下一代网络舞动多业务彩练

下一代网络NGN在近几年得到了迅速发展。电信网中一系列的变化在发生：引入软交换、固网智能化的改造、JP承载网的建设以及IPTV，业务的落地开花。NGN也从当初的将业务控制与网络承载相分离的设想，通过核心网络的演进、业务平台的改造、本地网络的IP化和种子业务的实现，一步步成为现实。NGN下一步将如何发展？IMS怎么引入网络？哪些有市场前景的业务可以灵活地在NGN上实现？这些问题决定着NGN未来的走向。     

下一代网络(NGN)业务平台建设初探

简要阐述了NGN业务平台的必要性，介绍了NGN业务平台的现状及体系演进路线，对业务融合的未来发展进行了展望。     

智能网CS-2技术及发展

在介绍智能网概念的基础上,本文从智能业务和智能网概念模型两方面,论述了智能网CS-2的能力和特点,并简述了智能网 CS-3的能力和特点。     

南京本地智能网的建设

分析了全国及省内智能业务的不足,提出了南京本地智能网的建设方案,介绍了南京本地智能业务的情况及发展的原则,指出了电信智能网的发展方向.     

Overview of IN and TMN harmonization

Introduces the work being performed in ETSI and ITU-T on the management of IN and on IN and TMN harmonization. After a short history of, and rationale for the work in this area, a brief overview of the results achieved in ETSI's joint experts group on IN/TMN is provided. This includes the proposed mapping of the IN functional entities onto TMN function blocks and the proposal for integration of IN and TMN modeling techniques. This work has resulted in the “Baseline Document on the Integration of IN and TMN”. Both ETSI and ITU-T have accepted this document as a starting point for further addressing the special requirements of IN with respect to management (i.e., rapid deployment and provisioning of new services and corresponding management functionality). The work on further alignment of IN and TMN terminology and concepts is an ongoing activity, as both IN and TMN concepts are expected to evolve toward the definition of open and distributed platform-oriented environments. The article also addresses this work program, the intermediate results, and the expected outcome of this continued effort on the standardization of IN management     

移动智能网技术的研发现状及未来发展

本文对我国移动智能网的应用和发展进行了总结,介绍了移动智能网的最新标准演进情况;对第三代移动通信系统中智能网与移动网融合进行了分析;结合智能网应用中出现的不足,综述了移动智能网研究的关键技术和发展趋势;对近期的热点移动智能业务进行了概括介绍;对我国移动智能网的进一步建设和发展提出几点建设性的意见.     

传统智能网向OSA体系结构的演进

随着通信技术的发展,各种智能业务得到了广泛的应用,智能网技术也得到了快速的发展,但同时也暴露出诸多不足.文章给出了传统智能网、综合智能网及开放业务接入(OSA)的体系结构,并系统地分析了它们的优缺点,指出了传统智能网向OSA体系结构演进的必然性.     

激光二极管的自聚焦透镜耦合理论与设计

分析了自聚焦透镜对激光二极管(LD)远离透镜主轴的大发散角光束的耦合公式,利用光线追迹法得到了用自聚焦透镜耦合时自聚焦透镜各个参数对耦合结果的影响,从而得到了获得较小聚焦光斑时的自聚焦透镜的最佳参数及在测量面上的相对输出光强分布。为利用自聚焦透镜耦合大发散角的激光二极管光束提供了参考依据。     

Intelligent network overview

The International Consultative Committee for Telephone and Telegraph (CCITT) program of work that addresses global international intelligent network (IN) standards and a framework for the standardized evolution of IN are described. Bell Communication Research's (Bellcore's) IN work, referred to as the Advanced Intelligent Network (AIN), is also discussed in relation to the CCITT IN Recommendations. In addition, IN activities of the European Telecommunications Standards Institute (ETSI) and the Telecommunications Technology Committee (TTC) of Japan are described     

Evolutionary trends in intelligent networks

A number of groups are currently developing technologies aimed at evolving and enhancing the capabilities of intelligent networks. In this article we discuss three of these initiatives: PINT, Parlay, and IN/CORBA interworking. The IETF PINT work addresses how Internet applications can request and enrich telecommunications services. The Parlay consortium is specifying an object-oriented service control API that facilitates the access, control, and configuration of IN services by enterprise IT systems. The OMG's IN/CORBA interworking specification enables CORBA-based systems to interwork with existing IN infrastructure, thereby promoting the adoption of CORBA for the realization of IN functional entities. We address how all three of these technologies could be deployed together in order to provide a basis for a more flexible and open IN architecture. We also identify a number of common trends and potential pitfalls highlighted by current work on the evolution of IN     

智能网的困惑

智能网作为计算机技术与现代通信相结合的产物，具有通信和计算机产品的双重特性。然而随着当今计算机通信在现代通信领域内扮演的角度越来越重要，传统的电信通信已感受到其压力。智能网作为一种以语音为主的信息服务手段，在Ｉｎｔｅｒｎｅｔ快车和传统电信班车相撞之际，何去何从．笔者为此初探了智能网的当前困惑和智能网在中国的发展。