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     

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/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。     

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.     

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.     

基于开放业务的网络融合

文章以IP电话为应用背景论述了网络融合的两种典型模型,讨论了采用Parlay/OSA 4.0开放业务规范实现网络融合的可能性,提出了一种能提供跨越因特网与传统电话网之间IP电话业务的网络融合方案:一种基于开放业务的网络融合方案,并讲座了该方案在实现网络融合相关的电信业务方面的优点和不足.     

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.     

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.     

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。     

基于Parlay X的下一代电信增值业务模型研究

Parlay X是一套简单易懂、比之Parlay在更高层次抽象电信网络基本功能的应用编程接口(API),它以Web Service的形式供IT应用开发者在开发的应用中调用电信网络功能.下一代网络业务的发展是一个渐进过程,对运营商来说,如何以更小的成本快速开发和部署新业务成了当务之急.文中介绍了Parlay X体系结构模型,着重提出了基于Parlay X的电信增值业务过渡模型,并对短信业务的开发流程进行了分析.     

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。     

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．     

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     

Open API standardization for the NGN platform - [ITU-T kaleidoscope]

Next-generation networks promise to provide a richer set of applications for the end user, creating a network platform that enables the rapid creation of new services. Significant progress has been made in the standardization of NGN architecture and protocols, but little progress has been made on open APIs. This article outlines the importance of open APIs and the current achievements of the standards bodies. It concludes with a brief set of issues that standards bodies must resolve in relation to these APIs.     

The Parlay API — Allowing Third Party Application Providers Safe and Secure Access to Network Capabilities

This paper sets out to explain the concepts behind the development of the Parlay API. The paper firstly describes the historical origins of the development, showing where the concepts initially began and describing some early work undertaken by the TINA Consortium on distributed software environments. The paper then goes on to describe the architecture upon which the Parlay API is built, to analyse the constituent parts of the API, particularly the call control element, and to give an overview of the ideas behind what has become known as Parlay X. This revised version was published online in July 2006 with corrections to the Cover Date.     

基于OGSA和Parlay OSA的NGN业务体系结构

文章提出了一种采用开放网格业务体系结构(OGSA)以及Parlay/OSA应用编程接口(API)的NGN业务体系结构,该体系结构能解决跨网络和平台实现资源同步管理和分配问题.文章还给出了基于该业务体系结构的业务组合示例.     

基于Parlay API的3G增值业务的设计与仿真实现

文中介绍了Parlay API技术,设计了3G网络中的用户定位业务,并在ISG仿真器上进行了仿真和实现,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,分析了该业务的实际运作效果。     

利用云计算技术构建开放融合的业务平台

文章提出通过采用云计算的虚拟化、分布式存储、弹性调度等技术,可以实现统一的业务执行环境和开发环境;通过构建下一代业务交付平台(NGSDP),可以使电信能力更加开放,业务之间更易于融合。文章认为开放API的使用,可以使业务的开发、发布更加简单,开发周期大大缩短,投资收益变高;通过虚拟化和统一资源调度,可以使应用与具体的网络环境松耦合,业务之间集成更加方便。