The Parlay Network API Specification

New business opportunities have emerged for network operators to offer a new generation of interfaces directly to solution providers that expose information and control in various intelligent networks. The paper describes the commercial rationale and operational benefits of these application level interfaces. The Parlay Group has defined application programming interfaces (APIs) to expose network capabilities including wireline, mobile, IP QoS, and messaging to external enterprises. The Parlay Group and the API specification are described together with an illustration of how the API could be used to create an enterprise workflow solution that integrates capabilities in different networks.     

Opening up networks with JAIN Parlay

The desire for new business growth has been a major driving force towards the development of open network APIs, such as the Parlay API, within telecommunications networks. The Parlay API enables both third parties (external companies, operating outside the security domain of the network operator) and network operators to build new applications that rely on real-time control of network resources. The Java APIs for integrated networks (JAIN^TM) Community is defining a Java version of the Parlay API to bring the benefits of the Java language to the Parlay API, and to promote industry-wide adoption of the Parlay API. This article describes the background and rationale behind the work of the Parlay Group, together with the characteristics, structure, and capabilities of the Parlay API. The benefits that Java and the JAIN Community bring to the Parlay API are then explored. A technical overview of the Java version of the Parlay API, referred to as the JAIN Parlay Edit Group API, is given and illustrated using example sequence diagrams. The article concludes by taking a look at what additional features may be added to the API and the implementation activities that lay ahead     

Opening the networks with Parlay/OSA: standards and aspects behind the APIs

Recently there has been an enormous increase in efforts to open up telecommunication networks for application development. In opening up the network, new business models emerge where applications can be developed and provided by enterprises outside the traditional network operator domain. This new business model, combined with the fact that applications can be built using standardized API with off-the-shelf IT technology and tools, will result in new innovative applications that will hit the market with drastically reduced development cycles. This article provides an overview of the Parlay/OSA initiatives concerning the specification of a set of open standardized API. Furthermore, the article outlines some architectural aspects that are implied and implicitly contained in the Parlay/OSA specifications. These are critical for understanding the implications when allowing access to the network via Parlay/OSA. The article then outlines different types of applications that can be built using Parlay/OSA. Finally, we conclude with an analysis of the future of Parlay/OSA.     

Parlay X技术在移动增值业务开发中的应用研究

简要介绍了Parlay X产生的背景以及与Parlay API的关系、接口功能,举例说明了Parlay X技术在移动增值业务开发中的实际应用,并从开放服务、完善能力、接口细化等方面提出了需要进一步完善的建议。     

Parlay API在NGN中的应用研究

文中首先对Parlay的体系结构及下一代网络的主要特点进行分析研究,在此基础上对Parlay API在NGN中的应用进行研究。针对传统增值业务开发的缺陷,提出一种利用Parlay API的增强型呼叫处理（ECC）API对NGN的增值业务进行开发的改进方案,并给出了一个基于Parlay API的增值业务开发实例。     

Networks and systems for BT in the 21st century

This paper provides an overview of BT’s 21st century network architecture. Analysis shows that this will deliver an improved customer experience, faster service provision and a significant overall cost reduction on today’s base. These aims can only be achieved by a ground-breaking approach which moves from multiple networks each providing one service to a true multiservice network where the services are delivered by combining reusable capabilities. The architecture is therefore based on network, intelligence and operational support systems built from reusable components and an application layer that can expose these capabilities through open interfaces.     

基于Parlay API的面向3G内容计费的研究

介绍了第三代移动通信网络中的业务开发技术-Parlay以及开放式接口API，详细分析了该技术的计费业务提供机制．在分析现有计费模式的不足的基础上，描述了内容计费的产生、需求及发展，介绍相关标准．重点研究了ParlayAPI规范中计费SCF（Service Capability Feature）在内容计费的3G计费平台中所提供的计费能力．针对WAP网页浏览业务，使用UML设计了基于流量的计费业务，给出了数据流分析示意图和计费流程．     

一种改进Parlay API增强呼叫等待保持能力的方法

通过对呼叫等待业务实例的深入分析得出Parlay API4．0规范缺乏呼叫等待保持能力，提出了一种修订终端呼叫腿状态机和增加功能接口的方法，该方法可以在保持Parlay API后向兼容性和不改变呼叫控制模型的同时增强呼叫等待保持能力，最后给出一个基于改进了的Parlay API的呼叫等待业务实例流程。     

An Implementation Model of Parlay MMCCS API Based on SIP

1Introduction ParlayMMCCSAPI[1]inParlay/OpenServiceAccess(OSA)specificationsprovideinterfacesforthecreation,operationandmanagementofmultimediaservicesin heterogeneousnetworks.Athirdpartyserviceprovider,byusingtheseAPI,suppliestelecommunicationsvalue added…     

基于Parlay API的多方呼叫业务的设计与仿真实现

文中分析了3G蜂窝移动通信网络中增值业务设计的重要性,提出了一种基于Parlay API技术的3G移动通信网络多方呼叫业务的程序设计方法,并在NRG仿真器上对该业务进行了仿真实现,验证了遵循parlay组织提出的开放API开发电信增值业务的可行性和简单性.最后,分析了3G网络中多方呼叫业务的实际运作效果及其市场价值.     

Networks and systems for BT in the 21st century

This paper provides an overview of BTs 21st century network architecture. Analysis shows that this will deliver an improved customer experience, faster service provision and a significant overall cost reduction on todays base. These aims can only be achieved by a ground-breaking approach which moves from multiple networks each providing one service to a true multiservice network where the services are delivered by combining reusable capabilities. The architecture is therefore based on network, intelligence and operational support systems built from reusable components and an application layer that can expose these capabilities through open interfaces.     

SIP协议下Parlay业务生成环境的研究及实现

开放式API（如Parlay、JAIN等）将网络资源向第三方开发商开放，电信新业务的开发变得快速、有效、方便灵活，然而使用更高级的抽象业务生成环境（SCE）将会使业务的开发变得更快更有效。给出了SIP（会话初始化协议）协议下，Parlay API业务生成环境的总体结构和映射，并在此结构上应用一个业务实例来分析它的相关过程。尽管它仅支持发起呼叫业务和生成业务的范围仍然有限，但它是非常有应用前景的。     

Parlay/OSA技术研究

Parlay/OSA是Parlay工作组制定的一套开放的、技术独立的应用编程接口,它向业务开发者屏蔽底层网络,实现业务快速接入。介绍了Parlay/OSA技术的产生和应用背景,以及技术总体概述。详细描述了Parlay/OSA的体系结构,包括框架组成和各部分功能详述。以号码翻译和多方呼叫为例,举例说明了Parlay/OSA的具体实现和应用,使读者能够更好地理解Parlay/OSA技术。     

Using PARLAY APIs Over a SIP System in a Distributed Service Platform for Carrier Grade Multimedia Services

The implementation of new mobile communication technologies developed in the third generation partnership project (3GPP) will allow to access the Internet not only from a PC but also via mobile phones, palmtops and other devices. New applications will emerge, combining several basic services like voice telephony, e-mail, voice over IP, mobility or web-browsing, and thus wiping out the borders between the fixed telephone network, mobile radio and the Internet. Offering those value-added services will be the key factor for success of network and service providers in an increasingly competitive market. In 3GPP's service framework the use of the Parlay APIs is proposed that allow application development by third parties in order to speed up service creation and deployment. 3GPP has also adopted SIP for session control of multimedia communications in an IP network. This article proposes a mapping of SIP functionality to Parlay services and describes a prototype implementation using the SIP Servlet API. Furthermore, an architecture of a Service Platform is presented that offers a framework for the creation, execution and management of carrier grade multimedia services in heterogeneous networks.     

Web服务及其在Parlay接口中的应用

电信网与Internet走向融合，而Parlay接口与Web服务作为各自领域开放技术的代表，也开始了互相结合。Web服务是一种基于可扩展标记语言（XML）、面向消息的分布式计算技术，与公共对象请求代理体系结构（CORBA）等分布式对象技术相比，在Internet范围内的互操作性更好。Web服务是实现面向服务体系结构（SOA）的最佳候选技术之一。基于Web服务的Parlay接口包括Parlay Web服务和Parlay X。其中，Parlay Web服务模拟面向对象的Parlay应用编程接口（API）定义，Parlay X的设计遵循Web服务面向消息的技术发展思路。基于Web服务的Parlay接口技术为构建电信网和Internet融合环境下的统一业务体系提供了基础。     

Evolutionary trends in intelligent networks

A number of groups are currently developing technologies aimed at evolving and enhancing the capabilities of intelligent networks. In this article we discuss three of these initiatives: PINT, Parlay, and IN/CORBA interworking. The IETF PINT work addresses how Internet applications can request and enrich telecommunications services. The Parlay consortium is specifying an object-oriented service control API that facilitates the access, control, and configuration of IN services by enterprise IT systems. The OMG's IN/CORBA interworking specification enables CORBA-based systems to interwork with existing IN infrastructure, thereby promoting the adoption of CORBA for the realization of IN functional entities. We address how all three of these technologies could be deployed together in order to provide a basis for a more flexible and open IN architecture. We also identify a number of common trends and potential pitfalls highlighted by current work on the evolution of IN     

Distributed network computing over local ATM networks

Communication between processors has long been the bottleneck of distributed network computing. However, recent progress in switch-based high-speed local area networks (LANs) may be changing this situation. Asynchronous transfer mode (ATM) is one of the most widely-accepted and emerging high-speed network standards which can potentially satisfy the communication needs of distributed network computing. We investigate distributed network computing over local ATM networks. We first study the performance characteristics involving end-to-end communication in an environment that includes several types of workstations interconnected via a Fore Systems' ASX-100 ATM switch. We then compare the communication performance of four different application programming interfaces (APIs). The four APIs were Fore Systems' ATM API, the BSD socket programming interface, Sun's remote procedure call (RPC), and the parallel virtual machine (PVM) message passing library. Each API represents distributed programming at a different communication protocol layer. We evaluated two popular distributed applications, parallel matrix multiplication and parallel partial differential equations, over the local ATM network. The experimental results show that network computing is promising over local ATM networks, provided that the higher level protocols, device drivers, and network interfaces are improved     

Parlay/OSA与Web服务的技术融合及其商业应用

在传统电信网络中,电信业务及其应用主要通过智能网等集中式智能网络技术实现,通常部署在各电信运营商通信网络内部。近年来,随着互联网的飞速发展以及人们对新型业务需求的不断增加,电信运营商必须将其业务部署与承载网络分开,以向更多业务提供商开放其通信网络,让第三方能够以可管理、可计费、安全的方式参与到电信业务的开发过程中。正是这种需求的刺激,推动了Parlay/OSA规范的制定和发展。文章从体系架构角度,分析Parlay/开放业务访问(OSA)和Web服务(Service)两种技术,比较两者在目标功能实现及其与外部应用交互方式上的异同点,并基于此提出了两种技术融合路线,最后介绍3种典型的ParlayWebService商业应用模型。     

Parlay API计费能力分析与研究

本文在对传统智能网的计费能力进行简要介绍的基础上,对Parlay API规范中呼叫控制SCF(service capability feature,服务能力特征)和计费SCF所提供的两种计费能力分别进行了讨论和分析.