Parlay／OSA网关中SIP协议映射适配模块的研究

首先介绍了Parlay/OSA与SIP之间的映射步骤和方法,重点设计了MPCC SCF的呼叫控制功能与SIP协议的映射中适配模块的功能架构,阐述了各个类在适配模块中的作用和相应的方法功能,设计了SIP Server与底层网络的通信功能的流程.     

Parlay网关中GCC SCF与SIP的接口研究

以SIP为网络控制协议,以ParlayAPI方式提供第三方业务的架构引起人们的广泛关注和研究。文章分析了基于Parlay网关的第三方业务提供方式,提出了Parlay网关中GCCSCF和会话发起协议(SIP)栈之间的软件架构,分析了GCC模块和SIP协议栈通信的原理,给出了GCC模块的主要线程。     

下一代网络核心业务平台中SIP协议映射的研究

首先分析了支持SIP（Session Initiation Protocol）协议映射的Parlay网关和SIP服务器的结构和功能模型.然后描述了MPCC SCF（Multi-Party Call Control Service Capabilty Features）和SIP服务器的具体设计和实现方案.最后以呼叫前转业务为例,给出了组成SIP协议映射的进程类型和功能描述.实践表明,使用本技术能实现屏蔽底层SIP协议,为开发者提供标准的、与协议无关的Parlay API的目的.     

IMS系统中业务层会话控制的研究

Parlay API(应用程序编程接口)是由众多电信设备商参与的Parlay组织所提出、遵循OSA(开放业务架构)要求的一种标准化网络能力访问接口。SIP(会话初始协议)负责IP网络中多媒体的会话控制功能,是下一代网络中的核心信令协议。文章重点对ParlayAPI向SIP协议的映射问题进行研究,介绍了Parlay API和SIP的呼叫模型,提出了GCC(通用呼叫控制)SCF(业务能力特征)向SIP协议的映射模型。     

Parlay网关中SIP服务器状态机的设计与实现

在Parlay网关实现SIP协议的映射过程中，SIP服务器的设计是关键。为了确保映射的消息传递机制可靠以及呼叫标识唯一，文章对SIP协议适配器进行了详细的设计，并针对oSIP协议栈中的状态机，在SIP协议适配器中设计了对应的状态机迁移方法和相应的回调函数，最后给出了SIP协议适配器中设计的类图。     

TC-CORBA网关实现方案的改进

TC-CORBA网关是Parlay/OSA网关的一个子系统,可完成由七号信令域的TCAP(Transaction Capabilities Application Part)协议到CORBA(Common Object Request Broker Architecture)域的IDL(Interface Definition Language)接口的协议映射功能.本文首先分析了目前TC-CORBA网关系统设计方案的不足,然后针对这些不足提出了改进建议,并提出新的实现方案.     

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.     

Parlay CC API与SIP的逻辑关系

首先描述了Parlay CC API(Parlay规范中的呼叫控制应用程序接口)和SIP(会话初始化协议)的逻辑组成与结构，然后通过SIP与Parlay CC API逻辑关系比较，给出了从SIP到Parlay CC API的方法、响应码和地址的映射关系，最后给出了基于SIP的Parlay CC API构建基本会话的时序图，并通过模拟实验说明基于SIP的Parlay CC API主要功能是可以实现的.     

Parlay CC APIs与SIP协议映射问题的研究

对Parlay APIs协议和SIP协议中与呼叫相关的部分作了对比，首先提出了两者与呼叫相关的核心概念的映射关系，列举了SIP Server工作在两种常用模式下的具体概念映射模型；随后阐述了Parlay CC API与SIP消息之间的映射，并给出实例加以说明；接着对二者的地址映射问题进行了讨论；最后给出了一个基于SIP的Par-lay CC API构建基本会话的时序关系。     

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。     

An Implementation Model of Parlay MMCCS API Based on SIP

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

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.     

Developing applications for Internet telephony: a case study on the use of parlay call control APIs in SIP networks

Applications offered to end users as value-added services, or more simple, services, are crucial for the survival and success of service providers. Two main sets of standards have emerged for Internet telephony: H.323 from the ITU-T and SIP from the IETF. Unfortunately, the related application development frameworks are rather weak. Parlay, a set of standard object-oriented and signaling protocol-neural APIs, is an alternative. It allows applications to access network functionality, including call control, in a controller manner. Call control makes it possible to establish, modify, and tear down calls. It is the main functionality offered by Internet telephony networks. We have built a call control application in a SIP environment, using the call control APIs offered by Parlay. The application is a multiparty game. This article describes the case study. The mapping of the APIs onto SIP is presented, and its implementation is described. Related work reviewed, and the lessons learned are discussed. Parlay call control APIs are suitable for application development in Internet telephony. However, well isolated extensions are needed to realize their full potential.     

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。     

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.     

利用OSA/Parlay技术提供即时消息业务的研究

总结了即时消息业务的基本通信机制和相关业务属性,在分析基于OSA/Parlay方式的短消息和基于CAMEL方式的多媒体消息的通信模型的基础上构建了基于OSA/Parlay技术的即时消息通信模型,并讨论了不同方式的消息通信流程.     

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。     

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.