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.     

下一代网络业务的特征及其技术

提出了下一代网络业务的多媒体化、开放性、个性化、智能化和虚拟化五大特征,同时文章也探讨了下一代网络的业务提供技术。     

用OSA开发3G业务

文章总体介绍开放业务接入(OSA)规范,阐述OSA中关键的架构性问题,通过典型实例说明使用OSA创建应用的特点。     

A Fault-Tolerant Architecture for Parlay Application Server

1　IntroductionIntheNext GenerationNetwork (NGN ) [1 ]context,theconceptofApplicationServers (AS)shouldbeanevolutionofWeb basedASwhichisabletocreate,host,executeandmanagethenext generationenhancedservicesthoughaccessingandcontrollingSoftswitch[2 ] ormediaservers.There fore ,ASshouldbeanIT platformthatplaystheroleofIN SCFextendingtheirfunctionalityinordertocoverthenewnetworkscenarios[3] .AScanac cessandcontrolSoftswitchthroughthestandardprotocols (e .g .SIP[4] )andopenAPIs(e.g .Par…     

Quantitative Analysis of Active Pharmaceutical Ingredients (APIs) Using a Potentiometric Electronic Tongue in a SIA Flow System

An advanced potentiometric electronic tongue and Sequential Injection Analysis (SIA) measurement system was applied for the quantitative analysis of mixtures containing three active pharmaceutical ingredients (APIs): acetaminophen, ascorbic acid and acetylsalicylic acid, in the presence of various amounts of caffeine as interferent. The flow‐through sensor array was composed of miniaturized classical ion‐selective electrodes based on plasticized PVC membranes containing only ion exchangers. Partial Least Squares (PLS) analysis of the steady‐state sensor array responses, measured in API mixtures prepared by the SIA system permitted a correct quantitative analysis of acetylsalicylic acid and ascorbic acid. Further optimization using multiway PLS fed by dynamic responses without additional feature extraction did not improve significantly the resolution of acetaminophen. Lastly, the chemometric treatment, involving the extraction of dynamic components of the transient response employing the Wavelet transform, the removal of less‐significant coefficients by means of Causal Index pruning and training of an Artificial Neural Network (ANN) with the selected coefficients, allowed the simultaneous determination of all the three studied APIs, while counterbalancing any interference due to caffeine.     

The Application of WSFL in the Parlay X Based Services Creation

1　Introduction　NGN abstracts beneath protocols as a set of easy under standing interfaces through open Application ProgrammingInterfaces (API). These APIs are independent with net works, so the services created with these APIs are irrespec tive to special network details[1]　ParlayXAPI is a set of more single and higher abstractedAPIs than Parlay API. These ParlayXAPIs have the abilityto access the network functions, and are easy to understandby IT developers to use in …     

Parlay X给NGN带来的开放业务环境

Parlay X应用Web Service技术,以开放式业务架构为NGN提供了有力的支持和保障.本文描述了Parlay X的应用场景、在网络中的位置、提供的业务种类、协议映射、业务开发部署以及Parlay X应用前景展望.     

基于IMS的固定和移动业务网络融合研究

基于IMS的网络融合是目前研究的一个热点。从业务网络融合入手,分析了IMS作为固定和移动业务网络融合平台的优点,介绍了IMS的业务生成环境,提出了基于Parlay/OSA的IMS业务网络融合方案,并对方案中的若干问题作了较为详细的分析。     

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。     

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。