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文章介绍了一种为社区用户提供IP电话服务的最新解决方案。该方案解决了目前方案中所存在的网络规模和网络可靠性方面的问题,能为大规模的市场应用提供高质量的服务,并且支持与PSTNSS7 信令网的互连。该方案基于网关分解,将现在的H.323 网关的媒体转换功能同网关控制功能分开,把智能控制功能置于呼叫代理之中。另外,文中还介绍了媒体网关控制协议(MGCP),该协议用于执行网关控制功能的呼叫代理与执行媒体转换功能的网关之间的通信。最后简单介绍了与PSTN 之间的互连与互通 相似文献
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文章介绍了Internet上话音传送技术的几种实现方式及电话网关的组成,预测了Internet电话市场的前景及其将对传统电话业务的影响。 相似文献
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软交换是一代分组网络的核心设备之一,综合接入媒体网关在软交换体系中位于接入层面中的位置。接入层面的功能是将用户连接至网络,它通过各种接入手段集中用户业务,将信息格式转换成为能够在网络上传递的信息格式后传递至相应的目的地。综合接入媒体网关(AG:Integrated Access Media Gateway)在接入层面中负责各种用户或接入网的综合接人,如直接将PSTN/ISDN用户、Ethernet用户、ADSL用户或V5用户接入。综合接入媒体网关一般放置在靠近用户的端局,同时还具有拨号Modem数据业务分流的功能。设备(AG)的技术要求。 相似文献
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A new architecture that can be used for offering an Internet telephony service to residential customers is introduced. The architecture addresses scalability and availability requirements of mass-market deployment of carrier-grade services and supports interconnection with SS7 for Internet telephony calls to the public switched telephone network. The architecture is based on the concept of a gateway decomposition that separates the media transformation function of today's H.323 gateways from the gateway control function of the gateways and centralizes the intelligence in a call agent. The media gateway control protocol is introduced as the protocol between the call agent that assumes the gateway control function and the gateway that provides just the media transformation function. Interworking between the architecture and the public switched telephone network, the session initiation protocol, and H.323 are also discussed 相似文献
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本介绍了企业级IP电话网络的系统组成,详细描述了IP电话网关IP电话网络中作用,并分析了IP电话网关应解决的关键技术。 相似文献
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家庭网关实现家庭网络智能化 总被引:1,自引:0,他引:1
随着技术的进步和家庭生活质量的提高,家庭内部的终端数量和种类与日俱增,家庭用户对家庭网络自动组网、互联互控和共享资源的需求越来越大。本文介绍了一种基于家庭网关的家庭网络智能化组网、管理和控制的方法。首先对家庭网络市场和前景进行概述,然后介绍和比较了家庭网络中的接入方式和互联互控协议,最后提出一种以家庭网关为中心的家庭网络智能化组网架构。 相似文献
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Credits and debits on the Internet 总被引:2,自引:0,他引:2
Since the advent of banking in the Middle Ages, bank customers have used paper based instruments to move money between accounts. In the past 25 years (1972-97), electronic messages moving through private networks have replaced paper for most of the value exchanged among banks each day. With the arrival of the Internet as a mass market data network, new technologies and business models are being developed to facilitate electronic credit and debit transfers by ordinary consumers. These new systems include CyberCash (which is a gateway between the Internet and the authorization networks of the major credit cards) and the Secure Electronic Transactions protocol (a standard for presenting credit card transactions on the Internet), as well as First Virtual (a way of using e-mail to secure approval for credit card purchases of information), GC Tech (a payment system that can use credit or debit via an intermediation server), and NetBill (a public private key encryption system for purchasing information) 相似文献
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随着电信市场竞争的加剧,全球固话业务被移动分流。固定运营商希望通过FMC来扭转固话业务的颓势。智能网是在现有电话网的基础上发展起来的,能方便、灵活地向用户提供和处理各种智能化通信新业务的一个网络体系。介绍通过综合智能网实现业务应用层面的FMC,分析网络智能化改造前,固网运营商要面临的难题,以及智能化改造的主要内容。 相似文献
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This article describes a wireless local loop system based on wideband CDMA technology. The unique features of CDMA technology make it a formidable alternative for fixed wireless telephone applications. The W-CDMA technology used by this WLL system is selected to provide primarily ISDN-like services and data rates to subscribers. This technology also provides a smooth transition into the third generation wireless technology. The air interface used in this WLL system is an interim TTA standard, which specifies a CDMA-based protocol operating in the 2.30-2.40 GHz band. The standard allows two types of bandwidth (5 and 10 MHz). The WLL system described in this article includes the WLL gateway switch, the radio port controller and the radio interface unit. The gateway switch connects the radio system to the PSTN and ISDN. The RPC provides concentration and control functions to a number of base stations called RPs. The RIU is comprised of the fixed units attached to the residential or commercial buildings. Also included are the radio port operation and maintenance (RPOM) unit, which is responsible for maintaining and managing the radio network elements, and the interworking function unit, which is used as a gateway to data services such as the Internet and PSPDN 相似文献
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基于CEBus的家庭网络通信系统设计研究 总被引:2,自引:0,他引:2
介绍一种参照CEBus标准中电力线载波规范设计实现的家庭网络通信系统。它主要由集中配置的中心主控设备(MCU)和分散配置的数字控制单元(DCU)构成,以家庭中的220V(或380V)电力线为传输媒介。MCU可以实现对DCU中连接家电产品的开关调控及状态信息的收集处理,同时MCU还作为网关设备提供在Internet、电话网络及无线遥控终端上对家电产品实现远程测控的接口。 相似文献
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智能家庭网关发展趋势研究 总被引:2,自引:0,他引:2
随着三网融合的迅速发展,用户对各类新兴家庭业务的需求也在逐步增加。作为整个家庭网络的核心,家庭网关扮演着重要的角色。本文首先介绍了家庭网关的概念和发展现状,然后分析了智能家庭网关的主要业务和关键技术,最后探讨了家庭网关的发展趋势及前景。 相似文献
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研究在现有基于TDM技术的移动国际出入口网络引入软交换技术的可行性,并对软交换国际局的设局方案、国际侧和国内侧网络组织方案、软交换国际局的新功能需要进行了分析.研究结论对推动软交换技术在国际局中的应用有着重大的技术意义和现实意义. 相似文献