移动智能网的标准化进展及发展方向

近年来,作为提供语音增值业务的有效方式,移动智能网技术得到了迅速发展和广泛应用.移动通信网向3G的演进及相关技术的发展对移动智能网的演进路线和发展方向带来了深远的影响.本文对移动智能网标准的最新进展进行了介绍,结合移动智能网目前应用中的不足,阐述了移动智能网向开放性、分布性发展的基本趋势和方向.     

The intelligent network in France

The introduction of an intelligent network (IN) architecture in France by France Telecom is described. Two main technical issues of present IN architecture are discussed: the programming interface to be used for service creation and the control-resource interface such as the SSP/SCP interface. The long-term evolution of IN, including the application to networks other than public switched telephone networks (PSTN) and the development of operating systems to handle IN-supported services, is outlined. Major technical problems in implementing a global IN architecture are also discussed     

移动智能网和宽带智能网的研究现状及其展望

本文简略地介绍了ＩＴＵ－Ｔ有关智能网的相关建议ＩＮ ＣＳ－２和ＩＮＣＳ－３的新业务;通过对智能网与移动网的综合和智能网与宽带网的综合分析,综述了移动智能网和宽带智能网近几年物研究现状及其关键技术;最后,对发展我国智能网提出了几点建议性意见。     

Consideration on common channel signaling evolution for globalintelligent networking

With the evolution of digital networks and intelligent network (IN) capabilities, the role of common channel signaling has become more and more important. In respect to IN, common channel signaling would play a significant role not only inside one network but also over multiple networks. International credit card validation and internetworking for digital mobile services represented by GSM (Global System for Mobile Communications) are examples which utilize internetwork signaling capabilities in the framework of the initial-phase IN. Enhanced service providers (ESPs) may access the public network through the common channel signaling interface to make use of the IN capabilities, as is being discussed in terms of ONA (open network architecture) or ONP (open network provision). This paper first identifies various scenarios where internetwork signaling interactions would take place in the framework of IN in the forthcoming era. It then identifies various requirements to cope with these scenarios. It finally discusses the directions for evolution of common channel signaling toward global intelligent networking     

中国发展智能网的设想

智能网(IN)是90年代电信网的主要发展方向之一。本文就智能网的定义、概念模型、构成及业务种类作了详细介绍,探讨了我国智能网的发展方向,并提出若干建议。     

Intelligent network evolution issues

The exchange telephone industry has developed a concept of future intelligent network characteristics that is gaining widespread acceptance. The concept is characterized by a service-independent architecture, integrated operations and service management systems, and programmable network entities. The full realization of this vision will require major advancements in the control software and signaling capabilities of existing network elements and operations systems, as well as the development of entirely new systems. Evolutionary strategies are discussed that can move the embedded network toward the ultimate goal and begin to achieve many of the benefits of the future vision in the near term. In particular, an intermediate intelligent network architecture called IN/1+, which could be implemented by 1991, is presented. IN/1+ is focused on circuit-switched capabilities and provides a significant movement toward the intended IN/2 architecture with a reasonable commitment of industry resources     

Customer service provisioning in intelligent networks

The author points out that despite the convenience of using functional components (FCs) as service building blocks, service provisioning in the intelligent network (IN) still presents major problems. He focuses on issues of responsiveness to customers. When customers are allowed to provision new IN services, it is necessary to consider whether the set of FCs can be directly used by customers without cause problems and whether the set of FCs of flexible enough to construct the services customers are likely to want. The author investigates customer service provisioning problems and flexibility in using the IN FCs, and proposes methods to support integrity control for service development. For concreteness, he focuses on the set of FCs defined in Bellcores's IN/1+ network     

Implementation of SS7: Italtel's experience

Field results in implementing Signaling system No.7 (SS7) in preparation for the introduction of intelligent network (IN) services are reported. Besides implementing SS7 for interexchange trunk signaling, Italtel has adapted it for communications with remote units, i.e. remote switching modules and subscriber multiplexers and concentrators. IN implementation in a distributed system is discussed. The distributed architecture of the Linea UT intelligent network is described     

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     

Intelligent Network Analysis by Closed Queuing Models

With the wide deployment of intelligent network (IN) services, there is an urgent need to understand and solve teletraffic performance issues of the evolving network intelligence platform. This paper discusses a queuing system model for the performance analysis of IN call processing. The intelligent network is presented as a network of queues where the total number of customers (e.g., SSPs) is fixed, thus forming a closed queuing network. The IN distributed architecture is modeled as a finite source queuing model – M/G/1/K/K. The expected response time for that model is analyzed and computed. The numerical results and the corresponding curves are provided and, related to open questions, future work is summarized.     

The Deutsche Bundespost Telekom implements IN

The introduction of intelligent network (IN) services into the existing telecommunications network in Germany is discussed. The configuration of the services offered in the IN, the parameters for the call routing programs available during the operational trial, and call charging models are described. It is shown that the major aspects of the evolution of IN are economic concerns and international standards     

Universal service creation and provision environment forintelligent network

The evolution of the intelligent network (IN) is summarized, and its service creation requirements and provision environment are clarified. A prototype system called the ISDN development experimental system for advanced services (IDEA), which has been developed to validate the foregoing, is described. The evaluation of the system design and its future evolution are discussed     

IN rollout in Japan

The evolution of the intelligent network (IN) services and architecture of the Nippon Telegraph and Telephone Public Corporation (NTT) is discussed. The hierarchical structure of network functions, machine independent service execution environment, advanced service creation environment and service-independent platform of the IN architecture are reviewed. Advanced IN's impact and the technical issues that remain unsolved are described     

基于IN/Internet互通技术实现因特网呼叫等待业务

智能网 (IN)是一个能快速灵活地引入各类新业务的智能化业务控制体系 ,已广泛应用于电信网 ,它与Inter net的互通已成为IT业界的热点研究课题。文中根据作者参与“八六三”课题研究的成果 ,介绍了基于IN/In ternet互通技术实现ICW (Internetcallwaiting)业务的网络结构 ,分析了ICW业务实现中的关键技术和智能网的支持功能 ,提出了ICW的两类业务提供方式和业务触发方式 ,给出了呼叫接受、呼叫等待、呼叫前转等典型呼叫流程。     

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     

The future of the intelligent network

This article examines the role the intelligent network (IN) can play as carriers move to next-generation networks. It discusses possible transition scenarios and examines how the IN could interwork with the Internet and packet-based networks to produce new hybrid services. The article presents a view of a fully converged network, and concludes that IN will continue have a vital role in voice and data services     

Globalizing IN for the new age

The future directions of intelligent network (IN) enhancements are discussed. The reasons why globalization of service provisions based on IN technology will be indispensable are also discussed. The functions required for global INs are analyzed. Possible schemes for IN function distributions are identified. The functions that should be centralized and distributed are clarified. Global IN architecture models are proposed. The areas which need extensive study for global INs are reviewed     

Intelligent network requirements for personal communicationsservices

It is shown that a moderate set of capabilities within the service switching point (SSP), service control point (SCP), and intelligent peripheral (IP), which are the intelligent network (IN) components directly responsible for the real-time execution and control of end-user services, can engender a wide range of end-user personal communication service (PCS) features. These capabilities could be used as the starting point for an economic analysis of IN implementation costs versus service worth. From a very large target set of call model trigger check points (TCPs), the dozen or so identified in the CCITT Capability Set 1 are shown to be sufficient. The SCP and IP functional entity actions identified are also sufficient to support PCS core network functions     

PHS roaming signaling protocol architecture toward global mobilitynetwork

The network for supporting the global personal communication is called the global mobility network (GLOMONET), where global mobility is guaranteed by coordination between intelligent networks (INs). This paper describes the implementation of a roaming signaling protocol for the personal handy-phone system (PHS) GLOMONET, clarifying the concepts of the PHS architecture regarding the GLOMONET. The PHS is a more economical personal communication system than existing cellular systems, by introducing the concept that the PHS service is provided by the most effective use of the existing ISDN and IN functions, where the majority of network functions to provide ISDN services are commonly used for functions for PHS service provision. The PHS mobility function realized by the IN guarantees flexible and effective roaming service provision for the globalization of future personal communication. The proposed PHS signaling protocol architecture is based on the intelligent network capability set 2 (IN CS2) defined by the International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) Study Group 11 and a visitor location register (VLR) database scheme with efficient signal transfer in the GLOMONET. The PHS specific roaming signaling protocol is defined by the service-independent IN application protocol (INAP). The proposed PHS concepts and roaming signaling protocol were reflected to the national telecommunications standards in the Telecommunication Technical Committee (TTC) and standards in the PHS-memorandum of understanding (MoU)     

Mobile agents - enabling technology for active intelligent networkimplementation

The emerging notion of active networks describes the general vision of communication network evolution, where the network nodes become active because they take part in the computation of applications and provision of customized services. In this context mobile agent technology and programmable switches are considered as enabling technologies. This article looks at the impact of mobile agent technology on telecommunication service environments, influenced by the intelligent network (IN) architecture. The authors illustrate how the integration of mobile agent platforms into IN elements, notably into the IN switches, will realize an active IN environment. This enables telecom services implemented through mobile service agents on a per user basis to be instantly deployed at programmable switching nodes, which results in better performance and fault tolerance compared to traditional IN service implementations