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。     

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     

中国电信移动通信网络管理系统

中国电信移动通信网络管理系统的由一个部级网管中心和３１个省市级网管中心构成，将对中国邮电部模拟及数字移动通信网内的ＴＡＣＳ系统及ＧＳＭ系统进行综合性的网络管理。本文综述了邮电部移动通信的现状，发展指标，网元的现状，开发网管系统的指导思想，以及逐步实施ＩＴＵ－ＴＴＭＮ建议的必要性。     

Telecommunications management network (TMN) architecture andinterworking designs

The authors discuss data communications networks (DCNs) used by operating telephone companies to interconnect large numbers of telecommunications network elements with operations systems and workstations to support and manage telecommunications networks, referred to by the international telegraph and telephone consultative committee (CCITT) as a telecommunications management network (TMN). The TMNs can include different types of DCNs such as private lines, circuit-switched networks, packet-switched networks, and integrated services digital networks (ISDNs). These can be divided into two classes: connection-mode and connectionless-mode networks. The authors briefly consider TMN concepts and implementation architectures. They then focus on TMN internetworking design alternatives, issues, and protocol stacks, in order to provide data network designers and implementors with the necessary fundamentals in considering and choosing interworking solutions for TMN applications     

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-based customer network management for ATM networks

Effective end-to-end management of today's globalized heterogeneous corporate customer networks, a mixture of ATM WANs and ATM LANs, is essential for customers at the cutting edge of technology. ATM WAN and ATM LAN management systems generally have different management policies and management information models. Studies on the customer network management system (CNMS) to realize end-to-end customer network management have thus adopted the telecommunications management network (TMN) interoperability concept, which is based on CNM manager and agent interoperation. This article proposes an end-to-end customer network management method that realizes interoperation. In order to realize configuration management, fault management, and performance management, the CNM agent extracts the information needed by CNMS from the ATM transport network operations system and controls the operations system accordingly     

新一代网络管理标准的研究

ITU－T在网络管理标准方面的制定大体经历了三个阶段，即1997年以来的第一代经典TMN阶段、1997至2000年的第二代扩展TMN阶段和从2001年开始的包括TMN在内的第三代网络管理阶段。“十五”期间我国的网络管理标准研究工作将放在第三代移动通信、IP网络、光网络3个重点领域。     

开放式分布处理--TMN的进一步发展

ＴＭＮ为复杂的电信网络管理规范了开放的、标准化的管理框架，是当代电信技术和计算机技术相互渗透和融合的产物，在ＴＭＮ的进一步发展中，开放式分布管理结构正显示出愈来愈强大的生命力，无疑将成为未来网络管理的发展趋势。     

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     

An approach to the cooperative management of multitechnologynetworks

This article presents a TMN-compliant X interface, the so-called Xcoop interface, as a fundamental component of an operations system developed to cope with the challenges of multidomain, multitechnology networks. Defined at the network level, between operations systems of different TMN domains, it is intended as a support for the management of broadband connectivity services with end-to-end QoS and scheduling constraints in backbones operated by many network operators. The key feature of the present approach, distinguishing it from other existing Xcoop solutions, is in handling the integrated ATM and SDH technologies, covering both the configuration management and fault management functional areas     

一个新的集成网络管理体系结构

已存在的三个网络管理体系结构,基于Ｉｎｔｅｒｎｅｔ／ＳＮＭＰ,基于ＯＳＩ／ＴＭＮ的网络体系结构不能独立完成对计算机和电信网的综合管理。基于新出现的计算技术和ＴＭＮ的逻辑分层管理体系结构,提出了一个能够综合管理计算机网和电信网的集成网络管理体系结构,并分析此管理体系结构的特点。     

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     

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     

Approaches for introducing TMN in legacy networks: a critical look

Introducing the telecommunications management network (TMN) into a legacy network is generally an uphill battle. This article provides a critical review of the two key approaches used in the industry for introducing TMN interfaces into legacy networks. Before the analysis, it is of prime importance to establish some ground rules. There is currently no common understanding of what introducing TMN into a legacy network means, as there is no common understanding of what introducing TMN into a network means. We start by analyzing what introducing TMN into a legacy network means, and then study, successively, the bottom-up and top-down approaches. Finally, a cost trade-off analysis is made     

一种基于CORBA和TMN结构的ATM网络管理模型

本文给出了一种基于CORBA和TMN结构的ATM网络管理模型。首先介绍模型的OS结构,并将ATM与其传输网SDH进行集成管理;其次定义了该模型在不同域之间交换信息的接口,即所谓的Xcoop。结果表明该模型能够实现分布式网络管理、保证宽带连接业务的端到端QoS,并且有故障管理和配置管理功能。     

A Performance Analysis of TMN Systems Using Models of Networks of Queues,Jackson's Theorem,and Simulation

We analyze the performance of a telecommunications management network (TMN) system using models of networks of queues, Jackson's theorem, and simulation. TMN systems for managing public asynchronous transfer mode (ATM) networks generally have a four‐level hierarchical structure consisting of a network management system, a few element management systems (EMSs), and several pairs of agents and ATM switches. We construct a Jackson's queuing network and present formulae to calculate its performance measures: distributions of queue lengths and waiting times, mean message response time, and maximum throughput. We perform a numerical analysis and a simulation analysis and compare the results.     

接入网的网元管理

从接入网(AN)的基本概念入手,在分析了电信管理网(TMN)的管理层模型之后,以笔者参与开发的HDSL网元管理系统为例,具体阐明了接入网网元管理系统的开发与实现.     

The Effects of Management Traffic on the Local Call Processing Performance of ATM Switches Using Queue Network Models and Jackson's Theorem

This paper considers a TMN‐based management system for the management of public ATM switching networks using a four‐level hierarchical structure consisting of one network management system, several element management systems, and several agent‐ATM switch pairs. Using Jackson's queuing model, we analyze the effects of one TMN command on the performance of the component ATM switch in processing local calls. The TMN command considered is the permanent virtual call connection. We analyze four performance measures of ATM switches—utilization, mean queue length and mean waiting time for the processor directly interfacing with the subscriber lines and trunks, and the call setup delay of the ATM switch—and compare the results with those from Jackson's queuing model.     

Architecture for integrated telecommunication management platforms

Telecommunication management network (TMN) systems represent diverse telecommunication domains with wide-ranging functionality which frequently employ different technologies and produce isolated solutions. Yet as telecommunications become more sophisticated, there is a growing need for telecommunication management integration and interoperability. The authors present a general TMN computing-platform architecture which is flexible and powerful enough to support contrasting TMN management applications while facilitating integration. To validate the architecture, three diverse management applications were profiled based on components of the TMN platform architecture. Core infrastructure components, required by a broad range of TMN applications, are identified and examined and TMN-specific technology is highlighted