CORBA技术在TMN中的应用

1 TMN在我国应用中遇到的问题 我国的电信网络十分复杂：第一,地域广,规模大;第二,由众多网络运营商提供不同专业、不同业务的网络;第三,各种网络由多个厂商的设备组成,甚至同一网络也由不同厂商的设备组成。因此,TMN的技术和标准必须建立在多个厂商、多种网络的基础之上。解决网管系统之间的互联、互操作问题是实现高层次、综合性网络管理的关键所在。     

TMN网管体系的演进(1)

介绍了电信网络管理的概念、结构及发展趋势,并简要描述了TMN网管体系的演进方向、TMN演进的体系结构、采用ODP观点实现TMN的方法、CORBA标准与TMN的关系、多环境下系统间的互通等     

爱立信助力深圳移动提升EDGE网络性能

EDGE的概念是Ericsson于1997年第一次提出的,并在1998年获ETSI批准.EDGE提供了一个从GPRS到第三代移动通信的过渡性方案,从而使现有的网络运营商可以最大限度地利用现有的无线网络设备,在第三代移动网络商业化之前提前为用户提供个人多媒体通信业务.     

爱立信助力深圳移动揽或EDGE网络性能

EDGE的概念是Ericsson于1997年第一次提出的，并在1998年获ETSI批准。EDGE提供了一个从GPRS到第三代移动通信的过渡性方案，从而使现有的网络运营商可以最大限度地利用现有的无线网络设备，在第三代移动网络商业化之前提前为用户提供个人多媒体通信业务。[编者按]     

嵌入式电信管理网应用代理

1嵌入式TMN代理电信管理网（TMN）代理是运行在网络元素（NE）上的应用程序,它给一个或多个管理系统提供管理NE的能力。嵌入式TMN代理用于管理使用实时操作系统（RTOS）的电信设备,应用代理就运行在该平台上。这种特殊的操作系统小且速度快,在大量使用时总体费用比较低,使得RTOS成为电信设备的理想选择。代理从驻留在远端系统中的管理器接收管理请求,然后对电信设备执行一系列的管理功能。管理器和应用代理在开放系统互连（OSI）协议推上使用公共管理信息协议（CMIP）进行通信。OSI,由TMN标准推荐使用,是两个应用通过…     

向第三代移动通信系统的演进

本文首先分析了向第三代移动通信演进的一些相关阶段和标准，然后介绍了北电网络的解决方案及进展。     

知识窗：3GPP组织

3GPP，英文全称Third Generation Partnership Project,中文意为“第三代合作伙伴计划”，是由欧洲的ETSI，日本的ARIB，韩国的TTA以及美国的TI在1998年底发起成立的组织。其宗旨是研究，制定和推广以GSM移动通信网络为基础向第三代移动通信网络发展的标准。我国已经参加。到2002年，该组织已经发布了三个版本的标准。     

金鹏CDMA研发现状播报

据悉，在CDMA网络方面，金鹏集团已经提供了支持IS-95A标准，包括交换网络和基站产品在内的全套设备。金鹏CDMA解决方案提供CDMA的所有技术优势，后向兼容并可升级到IS-95B、IS-95C（cdma2000(1x)）、HDR和cdma2000 3x标准的产品，能实现向第三代移动通信网络的平滑过渡。同时，金鹏采用先进的平台化结构，完全自主地开发了第二代CDMA移动交换机及相配套的其它网络单元。交换设备具有开放的网络接口，支持IS-41C(MAP接口)、IS-634(A接口)和TMN(Q3接口)，MSC容量可达50万用户，HLR容量可达300万用户；基站产品为六扇区结…     

电信管理网的标准化进展

简述电信管理网的标准化进展，重点介绍国际电联的TMN定义及其标准化和网络管理论坛的OMNIPoint标准。     

第三代移动通信(IMT-2000)概况

第三代移动通信系统最早1985年由国际电信联盟(ITU)提出，当时称为未来公众陆地移动通信系统(FPLMTS)，1996年更名为IMT-2000(国际移动通信-2000)，意即该系统工作在2000MHz频段，最高业务速率可达2000kb/s，预期在2000年左右得到商用。从1997年开始，由于第二代移动通信系统的巨大成功，用户的高速增长与有限的系统容量和有限的业务之间的矛盾渐趋明显，第三代移动通信的标准化工作开始逐渐进入实质阶段。目前，第三代移动通信系统的框架已确定，将以卫星移动通信网与地面移动通信网结合，形成一个对全球无缝覆盖的立体通信网络，满…     

Implementing OSI agent/managers for TMN

The telecommunications management network (TMN) architecture defines a framework for the management of telecommunications networks and services. It is based on a set of TMN standards developed by the International Telecommunications Union (ITU-T), and is finding increased interest in the telecommunications industry, where rapid development of services and open architectures are in demand. Open systems interconnection (OSI) agent/managers as defined by the OSI systems management standards play a major role in the TMN architecture. However, the complexity of these standards, make the implementation of agent/managers and thus TMN systems a challenging task; methodologies and tools to ease the task of building agent/managers are needed. This article discusses the key difficulties in building OSI agent/managers and presents an architecture and a toolkit that can overcome them. The toolkit automates the generation of code that conforms to TMN and OSI standards, allowing the implementor to focus on the implementation of agent and manager specific components using the facilities provided by the toolkit     

Access network management modeling

The effective management of access networks presents challenges which are not found in other sectors of the telecommunications network. The approaches being developed for the management modeling of access networks allow systems with different technologies and from different vendors to be managed in a uniform way. The functional architecture used for SDH can be generalized so that it is applicable to access networks, and this forms the basis of the modeling of their logical functionality. Technology-specific models of the various elements can be integrated into a technology-independent network model, and the physical resources and logical structure can be modeled to simplify repairs and improve inventory management. The development of standards for the management of the access network is an evolutionary process, but sufficient standards are now in place in order to achieve a useful level of functionality over a Q3 interface. Developing solutions that take advantage of the initial telecommunications management network (TMN) standards allows experiences to be fed back into the standards bodies to generate a more complete set of standard specifications, leading to the goal of access network management as part of a totally integrated TMN     

电信管理网

阐述了TMN的概念、管理功能和管理业务其及体系结构,并介绍了以我国TMN技术和标准为基础的综合电信管理网的建设情况。认为传统的电信管理网络已不适应现代电信网的管理要求,而由国际电信联盟——电信部(ITU-T)提出的,具有标准协议、接口和结构的电信管理网(TMN)将成为未来电信网管理的基础。     

Telecommunications management network: vision vs. reality

Since the early 1980s, the standards bodies have been specifying the telecommunications management network (TMN) principles. Millions of dollars have been spent. The TMN principles aim at being applicable across telecommunications technologies. They recommend the use of independent management networks to manage telecommunications networks, elements in the telecommunications networks (managed networks), and managing systems (in managing networks), communicating via well defined, standardized interfaces. The standards bodies envisioned TMN as a possible solution to the complex problem of telecommunications networks and services operation, administration, maintenance and provisioning (OAM and P) in the open, multivendor environment. However, the vision stumbles against the reality. Various factors still hinder the implementation of TMN-based OAM and P systems. The present article provides a tutorial on TMN by contrasting the vision and the reality     

Study of the TMN-Based Configuration Management in Intelligent Networks

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An implementation of a TMN-based SDH management system in Japan

Synchronous digital hierarchy (SDH) equipment based on fiber optics, SDH interfaces, and supporting operation systems (OSs) was introduced into Nippon Telegraph and Telephone (NTT)'s transmission-line networks beginning in 1989. One of the major problems in the first phase was less intelligent proprietary interfaces between network elements (NEs) and OSs, which caused limited connectivity among different types of NEs and OSs. A second problem was the lack of reusability of software modules for a specific type of equipment for other types of equipment. At the beginning of the second phase, the principles of the telecommunications management network (TMN) were adopted to provide good tools for defining standard interfaces and object oriented modeling. The article describes problems encountered in the first phase SDH network management system and summarizes advantages expected from making use of TMN-related standards available at the design stage of the second phase SDH network management system. It outlines the new SDH network management system, followed by results from the application of the TMN-related standards to real networks     

TMN and new network architectures

The impact of telecommunication management network (TMN) concepts when applied to the management of newly emerging network architectures is illustrated using the example of intelligent networks (INs). An in-depth comparison of TMN and IN architectural aspects leads to a number of conclusions showing a significant degree of commonality between the two networks. The IN is analyzed as a telecommunication network architecture aimed at reducing service creation and modification development costs and delays. This approach unifies the processing techniques for a number of highly diversified network services. Similarly, the TMN, which covers a wide range of management resources organized into a unique architecture, tends to unify operation, administration, and maintenance (OAM) for complex and evolving communication networks, despite their highly diverse network components     

TMN-based broadband ATM network management

ATM has rapidly transitioned from a standards and prototyping concept to become the next-generation switching technology used in products available on the market. With the rapid introduction of ATM switches into networks, there is an urgent need to manage them. The article discusses the telecommunication management network (TMN) interfaces being defined for management systems to communicate with ATM network elements (NEs) and other management systems. ATM management systems will have to communicate with ATM NEs in their jurisdiction using TMN interfaces. Networks will usually contain equipment from different suppliers. Thus, it is vital that there be standard management interfaces so that these different NEs can be managed. Some standard interfaces for ATM networks are defined, while others are being defined. The status of these interfaces is reviewed in the article. Communication between different networks is also needed, both between public networks and between public and private networks. Management personnel of one network need to exchange information with other networks for certain functions (e.g., initial service provisioning), and so management systems of different networks will exchange information through a combination of mechanized and manual interfaces. The status of these interfaces is also reviewed in the article     

Managing a broadband environment: “you can't buck themarket”

Demand for bandwidth seems unstoppable, and investment in network infrastructure is massive. There is a desire that network operators be able to manage these networks in an efficient manner, with flexibility to support new customer service opportunities faster and cheaper. Network operators are looking to standards to help them meet this challenge. The telecommunications management network (TMN) model, so effective in describing how management information must support needs at the element, network, and service levels, provides a good starting point. However, if the supporting standards are not developed and used wisely, a TMN approach can have the opposite effect of adding cost and removing flexibility. Technology-specific “stovepipes” may make it impossible to manage services across a range of technologies. The authors express their views on the need for a service-driven approach to standards implementation. They point out specific challenges operators will face as they approach their management systems' needs for broadband services, and encourage service providers and network operators to take a more proactive role in defining their needs     

A synchronous digital hierarchy network management system

The critical issues in multivendor environments and operation systems of telecommunication networks essential to speeding up the handling of service orders and service restoration after failures are discussed. To overcome these problems as the software backlog grows, the authors propose the application of a telecommunications management network (TMN) architecture together with an object-oriented network resource (ONR) model. The second phase of the synchronous digital hierarchy (SDH) network management system, which is based on the TMN architecture and ONR model, is examined