市场导向的电信增值业务开发模型设计

一、电信增值业务界定 电信增值业务就是指虚拟电信业务，凭借公用电信网的资源和其他通信设备而开发的附加通信业务，其实现的价值使原有网路的经济效益或功能价值增高，是一种电信网络、虚拟运营商、客户三赢的电信发展模式。     

站在新高度构建新一代综合业务接入网

随着接入网的出现，使整个电信网络的结构更加合理，网络资源的利用更加充分。同时随着IP等宽带业务的出现，传统的电信接入网也正向着数字化、综合化、宽带化的方向转变，因此接入网的发展目标是建立一个全业务接入网，真正在接入层首先实现多网的融台。港湾网络IONE新一代综合业务接入网产品正是适应这种需求．提出了对于新建网络应该“立足现在、放眼未来”，为充分保护运营商的投资而设计。     

上海电信全业务时代的城域网建设

上海电信城域网作为一张IP网络,目前已经承载有多种类型的业务。在全业务运营时期,将移动网和固定网的各种业务通过上海电信城域网实现承载,是一个切实可行的方案。     

电信增值业务走过不平凡的15年

电信增值业务是指凭借公用电信网的资源和其它通信设备开发的附加通信业务，它实现的价值使原有网路的经济效益或功能价值增高，有时被称为增强型业务。     

烽火网络构筑电信级以太网多业务平台

基于电信级以太网多业务平台的解决方案具备网络和业务扩展性、运营级网管能力和QoS保障能力，提供多业务的支持，同时延续了以太网无与伦比的高性价比特性，从而有效推动了传统电信运营商向分组化网络的转型，因此它从众多城域网技术解决方案中脱颖而出。目前在网络建设和改造中，运营商开始试点逐步在宽带接入网汇聚层面引入广义的电信级以太网技术，提供高可用、高速率的业务汇聚能力和以太网互联业务，电信级以太网已经逐步成为电信网的基础元素之一。     

一个管理业务接入的模型与实现

分析了电信管理网中管理业务接入的特点,基于这些特点,提出了一个采用可扩展标记语言 (XML)技术和模型视图控制器(MVC)结构的管理业务接入模型,并给出实现的情况。     

从业务系统发展方向看固定智能网的发展

电信网络增值业务系统及相关业务提供技术的兴衰,取决于其技术特点和系统整体能力能否满足电信运营商的业务需求。传统意义上的智能网技术具备业务提供功能与业务控制功能分离、业务执行环境独立于具体业务的特征,满足了在电信网络中为公众用户集中、快速提供业务的需求。     

电信运营商OTT TV业务网络建设探索

简述OTT TV(互联网电视)业务在国内外的发展情况,介绍电信运营商IPTV(交互式网络电视)业务网络现状和特点,分析OTT业务对网络建设的挑战和要求,提出电信运营商结合现有IPTV网络基础建设OTT TV业务网络的实现方案,重点论述内容注入、内容管理、网络承载、内容分发等几个重点问题的实现方式,从网络规划、建设的角度为电信运营商发展OTT业务提供借鉴思路。     

小灵通彩铃业务实现方案的探讨

本通过路由迂回及无路由迂回两种方式分析了彩铃业务在小灵通网络中的实现方式，另外阐述了彩铃业务平台的网络安全特性，并重点就系统软硬件的容错、话务量监控及流量控制、其系统结构的设计等方面论述了彩铃业务在电信网络的安全性及可靠性保障措施，为电信增值服务提供一个切实可行的实用平台。     

IP电信网的业务模型

文章在概要分析当前有关下一代网络的共识和存在的问题的基础上，讨论了IP电信网相关技术的概念与相互关系，阐述了VoIP技术，软交换技术在IP电信网中的作用，给出了IP电信网的业务模型和实现策略。     

QoS management through service level agreements: a short overview

The Internet protocol (IP) was created as a connectionless network layer protocol that takes no attempt to distinguish between various application types. Hence, the integration of a wide range of telecommunication services over the Internet is the main reason behind the need for the provision of quality of service (QoS) guarantees to end users. In such multiservice networks, resources are managed based on service level agreements (SLA), acknowledging different types of traffic in terms of bandwidth requirements, delay and other QoS parameters. An SLA is the documented result of a negotiation between a customer and a service provider that defines service characteristics, responsibilities and priorities of every party. An SLA may include statements about tariffing and billing, service delivery, and compensations. This paper provides a short overview of some aspects of quality of service, and identifies main issues and problems of defining and managing an SLA, based on its current standardization stage.     

SLA实现技术及其应用

随着网络服务的内容越来越丰富，用户对服务质量（QoS）的要求也越来越高。为了管理提供QoS保证的电信业务，服务等级协定（SLA）被提出，用来解决用户和服务提供商间有关QoS保证的问题。SLA表示模板、违例处理和指标评价是SLA的3种关键的实现技术。一个典型的SLA管理系统通常包括SLA数据管理、SLA问题管理和SLA管理3个部分。SLA的研究还处于起步阶段。需要进一步规范SLA管理内容。定义通用性和专用性相结合的管理方法，形成统一的工业标准。     

Management of service level agreements for multimedia Internetservice using a utility model

The efficient management of a quality level of Internet service is becoming increasingly important to both customers and service providers. This article describes how service level agreements for multimedia Internet service can be managed and controlled. We first present a literature survey on the problems of SLA management: SLA parameter definition, SLA measurement, and QoS management. We present a utility model to capture the management and control aspects of SLAs for multimedia Internet service. This utility model has been used in microeconomics theory, but here we have applied it to SLA management. This model provides a computationally feasible solution for admission control and quality adaptation for multimedia Internet service and SLA management. It also allows management policies to be flexibly expressed by service providers. Finally, we apply the utility model to the SLA management of VoIP service and describe how to use it for admission control, dynamic quality adaptation, and resource allocation for SLA assurance     

北京电信网管系统的现状及发展建议

随着电信网规模的不断扩大，网管系统的地位日显重要本文介绍了北京网管系统的组成和各部分的基本功能，并在系统结构层次，管理综合化及向ＴＭＮ过渡策略方面对北京网管系统今后的发展提出了中肯的建议。     

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。     

The structure and management of service level agreements innetworks

The paper proposes a structure for quality-of-service (QoS)-centered service level agreements (SLA), and a framework for their real-time management in multiservice packet networks. The SLA is structured to be fair to both parties, the service provider and their customer. The SLA considered here are for QoS assured delivery of aggregate bandwidth from ingress to egress nodes; however, the control and signaling is for the more granular flows or calls. A SLA monitoring scheme is presented in which revenue is generated by the admission of flows into the network, and penalty incurred when flows are lost in periods when the service provider is not SLA compliant. In the SLA management scheme proposed, the results of a prior off-line design are used, in conjunction with measurements taken locally at ingress nodes, to classify the loading status of routes. The routing and resource management are based on virtual partitioning and its supporting mechanism of bandwidth protection. The effectiveness of SLA management is measured by the robustness in performance in the presence of substantial diversity in actual traffic conditions. A simulation testbed called D'ARTAGNAN has been built from which we report numerical results for a case study. The results show that the SLA management scheme is robust, fair and efficient over a broad range of traffic conditions     

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     

基于分层聚类分析的IPTV业务质量研究与应用

IPTV是基于IP协议的视频业务,与互联网数据业务对网络质量的要求存在很多不同,对网络带宽、QoS性能、可靠性及时延性等方面都要求更高。随着IPTV业务的推广发展和用户对业务质量要求的提高,IPTV业务质量保障变得越来越重要。因此,介绍IPTV网络承载技术,分析IPTV业务质量保障现状及不足,结合SQM系统提出了一种基于分层聚类分析的IPTV业务质量优化方案。     

SNMP-based acquisition system for DiffServ parameters

Modern communication networks cannot get along without quality of service (QoS) assurance. QoS-support mechanisms offer preferential treatment for specific traffic classes that is required especially by real-time network applications. Unfortunately current QoS technologies have certain disadvantages and limitations and therefore they are not always able to guarantee the required QoS level. This paper introduces a quality of service support system that improves the most often used quality of service support technology called Differentiated Services (DiffServ). The system proposed utilizes the Simple Network Management Protocol (SNMP) for the acquisition of configuration information from the edge router of the DiffServ domain. This information is subsequently used to control the allocation of network resources within the QoS assurance process. In order to evaluate this system we used the OPNET Modeler simulation environment where we built a simulation scenario able to interact with real network components. For this purpose we implemented the SNMP protocol into the OPNET Modeler and used it for acquisition of management information, stored in the Management Information Base (MIB) of the network node. The paper describes in details the improved QoS-support mechanism and the simulation model able to cosimulate the behavior of both real and virtual network elements.     

Trustworthy Web services provisioning for differentiated customer services

With the number of e-Business applications dramatically increasing, a service level agreement (SLA) will play an important part in Web services. The SLA is a combination of several quality of services (QoS), such as security, performance, and availability, agreed between a customer and a service provider. Most existing research addresses only one of these QoS metrics. Furthermore, in the case of the response time defined as one of QoS metrics for performance, only the average time to process and complete a job is typically used. Moreover, customer requests often need to be distinguished, with different request characteristics and customer’s different service requirements. In this paper, we consider a set of computer resources used by a service broker to host enterprise applications for two classes of differentiated customer services subject to a service level agreement. We study three QoS metrics, namely, trustworthiness, a percentile response time, and availability. The percentile response time metric defines a value below which the end-to-end response time has to be for a given percent of time. We present an approach for resource optimization in such an environment that minimizes the total cost of computer resources while satisfying all these three QoS metrics in a trust-based resource provisioning problem which typically arises in Web services. We formulate the trust-based resource provisioning problem as an optimization problem under SLA constraints, and then solve it using an efficient numerical procedure.