基于 CORBA的Parlay网关的设计与实现

摘要

与传统电信网络相比，NGN 的优势之一就是利用开放式 API向第三方开放，由第三方业务提供商通过标准的 API接口为用户提供丰富多彩的业务；文中首先介绍了 ParlayAPI的体系结构，引入 CORBA 中间件技术，给出了基于 CORBA 的 ParlayAPI模型，最后以 VisiBroker作为开发工具，给出了 Parlay网关的详细实现方法；由于兼具备 CORBA 中间件技术和 ParlayAPI的特性，该网关的实现独立于具体的物理网络，可应用在各种不同的网络中，为不同的网络运营商提供多媒体业务。%Compared with the traditional telecommunication network ,One advantage of NGN is the use of an open API and be open to third parties,so that it can provide users with a variety of businesses by a third party service provider through a standard API interface.This paper firstly introduces the Parlay API architecture,then describes CORBA middleware technology and gives the CORBA-based Parlay API model,finally utilizes VisiBroker as a development tool and gives the implementation of CORBA-based Parlay gateway in detail.Due to the features both of CORBA middleware technologies and Parlay API,the realization of the gateway is independent of the physical networks and can provide multimedia service for different network operators.