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     

IP电信网中的业务体系结构

文章阐述了下一代IP电信网业务结构的基本要求，通过与传统智能网的比较，分析了基于API的开放式业务结构的技术特点，并详细介绍了软交换网络的业务体系结构和3G网络的OSA，Parlay业务结构，最后简要说明了智能终端的业务接口，指出其进一步的研究课题。     

IN rollout in Europe

The present situation related to intelligent networks (INs) in Europe is described. The projects and experiences of some single operators and main aspects of a joint initiative research activity currently carried out by various European countries (Eurescom) are discussed. In particular, the status of IN in the Italian SIP network, in the United Kingdom BT network, and in the France FT network is reviewed. Particular reference is made to the basic milestones of the IN project, the architectural approach adopted, the services provided, and the planned evolution. The objectives, the tasks, and the activities performed within the European group are also discussed     

A Study of the Next Generation Intelligent Networks Interworking with IP Networks

A Study of the Next Generation Intelligent Networks Interworking with IP Networks     

Provision of unified IN functionality in the context of IMS

The IP Multimedia Subsystem (IMS) represents an attempt for networks convergence, allowing users of rich-content applications to communicate through any access network type. In the near future, IMS is expected to give operators and content providers the flexibility to exploit a multitude of new communication applications in a harmonized communication environment of heterogeneous IP networks. However, despite its merits, the standardization process of IMS networks is lagging behind, leaving harmonization issues of services provisioning, open. In this effort, main hindering factor is the existence of similar implementations customized per network technology. Particularly in what concerns the Intelligent Network (IN) services, these are provided in mobile networks by CAMEL (Customised Applications for Mobile networks Enhanced Logic) and in fixed networks by INAP (IN Application Part). With regard to this problem, the present work introduces a method for integrating into the context of IMS communications all types of IN logic that nowadays are available only in legacy networks. The key element of this method is a service interrogation logic, called IN-OAG (IN-Open Architecture Gateway), which can be integrated on the P-CSCF (Proxy-Call Service Control Function) component of IMS, as an enhancement for supporting IN interoperability. IN-OAG is dedicated to implementing interoperability between the core IMS and mobile, wireless or fixed networks. The functionality of the proposed architecture is shown through several example scenarios.     

The intelligent network concept

The intelligent network (IN) concept evolved from the networks which are planned or in existence in 1988 to provide network services such as the 800 service. The IN architecture will require an expansion of the capabilities which recognize the need for specialized processing and formulate a query to a database system. The expanded capabilities, along with an expected increase in the number of calls requiring special processing, place greater demands on system resources. The distributed nature of service implementation, along with the complex interactions among services, requires advanced, highly efficient operations. The authors describe the IN architecture and the process of creating a service in that environment. An illustrative example is include     

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     

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     

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     

Advanced intelligent networks: now a reality

This paper looks first at the background to the development of intelligent networking concepts and then tracks this development to the advanced intelligent networks (AINs) of today. The network architecture and basic nodal functions are explained, and a brief review given of the essential intelligent network building blocks, namely the IN (intelligent network) call model and the enhanced CCITT No.7 signalling system. Typical intelligent network services are examined and the tutorial finishes with a review of the latest IN standards     

多SCP智能网的负载控制模型与算法

由于智能网的主要瓶颈是SCP的处理能力,因此本文提出了多SCPs智能网及其负载控制模型,并分析了该模型的负载控制要求。由于在智能网中引入了多SCP,因此对呼叫分发(路由)进行了讨论,提出了一种实用的负载控制算法。最后给出了模拟结果。     

Perspectives on the AIN architecture

The advanced intelligent network (AIN) is examined in terms of its history, present day architecture, and future evolution. The history of the AIN is traced from predivestiture 800 and calling card service capabilities, through IN/1, IN/2, and IN/1+, leading to the various AIN releases. The present-day view of the AIN architecture includes the switching system and other network systems, as well as operations. The AIN functionality supported by this architecture is described from a customer point of view, by means of an illustrative service that could be provided from an AIN platform. The next steps in the AIN evolution are discussed. An appendix that provides detailed information about the AIN Release 1 call model is included     

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     

A guide to data communications: high-speed local-area networks

Local area network (LAN) classifications based on speed are defined. The use of optical fiber, the fiber distributed data interface (FDDI) multitoken protocol, linear buses, and the dual queue distributed bus (DQDB) is examined. LAN limits are discussed. Supercomputer LANs and ultra-gigabit networks are considered. The so-called mass of glass, a wavelength-division-multiplexed architecture consisting of a passive optical broadcast medium, is discussed. Future issues and trends are indicated     

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)     

对基于虚拟机机制的智能网SCF程序结构的研究

本文提出了一种基于虚拟机机制的智能网业务控制功能（ Ｓ Ｃ Ｆ）的程序结构。基于这种结构可以实现 Ｓ Ｃ Ｆ功能与智能业务的无关,即智能业务的引入与修改不需要重新编译 Ｓ Ｃ Ｆ软件。通过把一个智能呼叫与一个虚拟机相映射,做到了对智能业务的逻辑描述与具体实现的统一。本文还详细讨论了智能呼叫在 Ｓ Ｃ Ｆ 中的状态转移和所设计的虚拟机的内部结构,以及基于虚拟机加解释器的工作原理和优点     

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。     

Integration of intelligent network services into future GSMnetworks

This article introduces various difficulties and issues in the basic scenario of integrating intelligent networks (INs) and the Global System for Mobile Communications (GSM). As an example, implementation of Universal Personal Telecommunications (UPT) is considered. This article does not offer a comprehensive analysis, but rather a tutorial view. The separation of cellular networks and IN is not well suited to provide common mobility-related services. The present signaling systems do not enable transfer of mobility-related parameters, such as the cell identity and international mobile subscriber identity (IMSI). A call connection to the service switching point must be set up every time IN services are used from the GSM network. The same information is stored in several network elements, and service creation and management are complex. With those disabilities in mind, two integration scenarios are introduced and their characteristics are compared. However, the aim is not to give detailed guidance for implementation, but rather to introduce different options and describe their most significant characteristics. It is important to be able to provide mobility-based information directly to the IN. Flexible integration calls for changes both in mobile exchanges and signalling systems. Mobile exchanges will be built with additional IN functionality and, in fact, future signalling systems will better carry mobility-related information. Mobility can be implemented with a rather small investment, provided that there are digital exchanges and transmission systems and the basic infrastructure has already been built. The required intelligence can be offered by using the existing Public Land Mobile Network (PLMN) or IN architecture     

基于lN平台的OSA/Parlay网关的实现

本文在对IN和OSA/Parlay体系结构进行深入研究的基础上,分析了IN和OSA/Parlay在网络功能上的相似性,提出了用IN平台实现Parlay网关的新思路,即用SIB编写业务逻辑程序的方法实现标准的Parlay接口类,为IN平稳过渡到Parlay开放架构提供了参考,并研究了业务逻辑程序和接口类的对应关系.然后本文以两个典型的应用为例,阐述了业务逻辑程序的启动、服务以及实例销毁的全过程.