PAS/iPAS无线接入系统

　　UT斯达康公司的PAS/iPAS无线市话解决方案为电信运营商开展新业务、增加营运收入，更为有效地为众多电信消费者服务创造了良好条件。

　　PAS/iPAS无线市话系统是固定电话的补充及延伸，是新一代无线通信方式。它将固定电话网络的传输交换与无线接入技术有机结合，以固定电话网络为基础，以无线接入方式在本地网或本地网内局部地区范围内提供无线语音、数据及多种增值服务。

PAS/iPAS系统的特点和优势：

 　　 大容量的无线系统，能满足人口密集区大话务量要求；
 　　 新一代iPAS系统的核心网采用IP软交换技术，已经成功地融合到UT斯达康公司的下一代网络系统中；
  　　利用现有资源，建设周期短；
  　　系统成本低，投资回收快；
 　　 动态频率分配，无需复杂的网络规划，系统扩容简单；
 　　 话音质量高，采用32K ADPCM编码方式，音质可与固定电话媲美；
 　　 基站和手机辐射低，健康环保，可长时间通话；
  　　具有强大的数据业务功能（高达64Kbps无线数据传输速度），让消费者通过PAS手机终端可以享受到拇指短信、拇指邮件、拇指信息、拇指定位、无线上网等多种丰富多彩的无线增值业务。

　　UT斯达康在不断提高PAS/iPAS无线市话系统性能的同时，也致力开发和提供更多种类的手机终端，并提供多种形式的增值业务，为消费者提供更为多样的选择丰富的服务。并且，在满足目前业务需求的同时，UT斯达康的iPAS系统已经采用了IP软交换技术的核心网络，支持向下一代网络技术和业务的过渡，更大程度保护现有投资。

mSwitch软交换系统

　　UT斯达康公司是全球最早进行软交换研究的公司之一，其mSwitch软交换系统是基于IP，面向语音、数据、移动和多媒体的多业务交换系统。它为运营商提供了一个灵活多样、低成本、高效率的网络，包括统一的业务平台、统一的网络管理系统，并能够在接入层提供丰富的语音、数据、视频、VOIP、Internet接入以及多种宽带业务，为运营商提供了全面、有效、经济的解决方案。由于mSwitch软交换系统是基于IP包交换设计，并且具有先进的体系架构，因而能够为传统电路交换网络向下一代网络的演进提供现实、完整和平滑的过渡方案。

　　目前该系统已经获得信息产业部软交换入网许可，并正在部分城市进行商业网络试运行。其中基于软交换架构的iPAS系统已经得到了大规模的商用，位列世界商用软交换系统市场份额第一。

宽带接入系统

　　 UT斯达康的宽带接入系统提供综合的接入方式，满足不同市场的需求。UT斯达康是在中国最早推出V5接入系统的公司之一，其AN2000接入网系统在中国的接入网中取得了大规模应用，为公司取得了良好的声誉。

　　目前，UT斯达康纯IP内核的ADSL DSLAM设备销量名列2002年全球第二，产品广泛应用于美国、日本、欧洲等国际市场。此外，公司针对城域网接入市场推出了完整的基于IP的解决方案，提供从IP骨干网、城域网、接入网的端到端解决方案。主要产品有：AN2000B系列宽带接入系统，NetEdge系列接入层交换机．iAN系列IP宽带综合接入平台，丰富的WLAN系列无线接入网产品，并可以和小灵通用户捆绑提供无所不在的数据业务．丰富的CPE用户端产品系列，还有非常有特色的多媒体用户端设备TrioBox、QBox,其中TrioBox在日本YahooBB网络中得到成功的应用。UT斯达康提供的宽带接入产品可以提供丰富的接入方式，如POTS、BRI、PRI、V5、E1、ADSL、VDSL、EDSL、G.SHDSL、10/100MEthernet、FTTH等多种接入技术。

　　UT斯达康提供的宽带接入系列产品既实现了窄带向宽带的平滑过渡，保护已有投资，又保证网络将来的扩充和升级．并且方便运营商开展各种增值业务。目前各类产品已经被国际多家运营商大量应用，其高性能、迅速灵活的组网能力，以及可运营、可管理性模式，得到了广大用户的充分认可。

　　UT斯达康丰富的宽带接入系列产品结合UT斯达康公司的mSwitch软交换平台，可以为运营商提供端到端的解决方案。实现综合语音、视频、数据、无线接入的真正的多媒体通信。
 
第三代移动通信端到端解决方案

　　作为全球WCDMA移动通信系统的积极推动者，UT斯达康公司成功开发研制了全套WCDMA商用系统MovingMedia8000.UT斯达康可以提供端到端的3G移动通信系统解决方案，严格遵循3GPP的体系结构及各项标准与规范，并在方案中增强与其它厂商设备的兼容性。UT斯达康公司在3G开发之初，就利用先进的IP技术实现了UMTS所要求的核心网．并采用统一的硬件与软件平台和具有QoS保障的线速IP交换机，因而可以方便引入新业务，提高组网的灵活性，可充分利用运营商IP骨干网络资源，降低运营商3G建网成本。UT斯达康的3G系统设备解决方案可以提供满足不同应用环境的W—CDMA基站，其核心网还支持TD—SCDMA和GSM与GPRS无线技术，并提供MSC，GSN HLR、OMC、NMS等等。

　　 UT斯达康公司在“ 2001年中国国际通信设备技术展览会”上首次推出了第三代移动通信产品，现场开通了WCDMA网络，提供WCDMA端到端解决方案，向公众展示了3G话音、图像、数据业务，其高速率、多媒体的特性．让观众实实在在地体会到了3G网络的优越性。
 
新一代光网络解决方案

　　UT斯达康公司凭借多年提供多种电信解决方案的经验和对电信发展趋势的准确把握，针对城域网的业务特点，采用创新的体系结构和先进的芯片技术，成功开发了基于SDH的第三代MSTP多业务光传输产品NetRing系列，涵盖了从STM-1、STM-4、STM-16到STM-64的所有产品。NetRing在实现强大的TDM、IP和ATM等多业务传输能力的同时。极大提高了设备集成度，具有很好的性能价格比，能为城域传送网建设的三个层面，即核心层、汇聚层和接入层提供完整解决方案。

Wireless Access Solution

UTStarcom's PAS/iPAS Wireless Access provides telecom operators with an excellent opportunity to develop new services and increase revenues by extending service to a new customer category-wireless subscribers.

PAS/iPAS seamlessly integrates with an operator's existing wireline network by combining the transmission and switching technologies of the wireline network with UTStarcom's wireless access technology.PAS/iPAS provides city-wide,wireless,voice,date and value-added service.

PAS/iPAS has the following characteristics and advantages:
  High capacity wireless system suitable for densely populated areas
  Enables smooth migration to nest generation networks
  Seamless integration into existed network allows a short construction cycle
  Low system cost and quick return on investment
  Dynamic frequency allocation and easy capacity expansion
  High voice quality,comparable to that of fixed telephony,with 32k ADPCM encoding used
  Low radiation power from the base station and the handset,to ensure health of the user for long call duration
  Fast Data transmission up to 64kbps supports value-added services
  Creates new sources of income with value-added services

While continuing to improve the performance of its PAS/iPAS wireless systems,UTStarcom is also committed to developing and offering more handsets and value-added services to meet the diversified needs of customers.Additionally,besides satisfying the current business demand,UTStarcom's iPAS solution has already adopted IP-based softswitch technology in the core netowrk to support smooth migration to the next generation network technology and service and better protect existing investment.

Wireless,Broadband and IP-New ideas New communications

IP Softswitch

As a leading innovator of softswitch technology,UTStarcom developed its IP-based softswitch platform,mSwitch,as an integrated solution capable of handing various services such as voice,data and multimedia.It provides operators with a flexible cost-efficient network,consisting of a centralized service platform and a network management system.The softswitch architecture of mSwitch,offers on the access layer voice,data,VOIP,internet access and various broadband services.It also integrates various functions such as switching,access,network management and maintenance,providing operators with an overall,effective and economical MAN solution.Since softswitch is based on packet switching,it furnishes a realistic,complete and smooth migration strategy for the evolution of the traditional circuit-switched network to a next generation network.

Currently,this system has involved several tests conducted by the MLL authority and major operators,and used in a trial operations over commercial networks.The iPAS system,which is based on mSwitch softswitch functionality has already found wide commercial applications.

Broadband Access Solution

The broadband access solution offered by UTStarcom meets a variety of market demands by providing an integrated access platform.UTStarcom is one of the world's first companies to introduce V5 access technology in China accesss networks.

So far,UTStarcom is ranked the secong largest provider of IP-based ADSL DSLAM equipment worldwide.The company has rolled out a complete IP-based solution targeted at MAN access market offering an end-to-end solution fou IP backbones,MANs and other access network.Major products include AN2000B series broadband access system,NetEdge series access layer switch,iAN series IP-based broadband integrated access platform,the WLAN product portfolio which can be bundled with PAS,varied CPE user end products,and multi-media user end equipment TrioBox and Qbox.TrioBox was successfully deployed in Yahoo BB networks.these broadband access products provide a variety of access technologies such as POTS,BRL,E1,ADSL,VDSL,EDSL,G.SHDSL,10/100M Ethernet and FTTH.

The broadband access products of UTStsrcom not only enable smooth migration from narrowband to broadband and protect existing investment,but also allow for future expansion and rpgrade and the convenient deloyment of various value-added services.So far,these products have been widely adopted by a number of international operators and their excellent performance,fast and flexible networking capability and operable and manageable mode have been fully recognized by the large number of customers.

End-to-end 3G Solutions

UTStarcom offers end-to-end solutions for the 3G mobile communications system,stringently complying with the 3GPP architecture,standards and specifications and interoperability with other vendors.In the early stage of 3G development,UTStarcom adopted advanced IP technology to implement the core network required by UMTS.It also used the unified HW and SW platform and the line speed IP switch with QoS assurance.In this way operators can rapidly introduce new services,increase network flexibility,maximize unused bandwidth and lower the cost of the 3G network.UTStarcom's 3G solutions can provide W-CDMA base stations in different application environments.The core network also supports TD-SCDMA,GSM and GPRS technologies and provides MSCs,GSNs,OMCs and NMSs.

UTStarcom's end-to-end 3G W-CDMA solution made its debut at PT/WIRELESS NETWORKS COMM 2001 in Beijing,Oct.2001.The company gave the visitors an opportunity to actually experience the advantages of the 3G network by demonstrating the performance of 3G　voice,image,data and high-speed multimedia services.

New Generation Optical Network Solution

Leveraging on its long-time experience of telecom solution provision and precise identification of telecom development trend,UTStarcom has adopted innovative architecture and advanced chip technology,successfully developed the NetRing series SDH-base MSTP optical transmission products that address the business characteristics of MAN.The NetRing series cover all products from STM-1,STM-4,STM-16 to STM-64.While offering strong multi-service transmission capability such as TDM,IP and ATM,NetRing greatly improves the equipment integration and offers extraordinary cost/performance ratio,and is able to provide a complete solution for the three laters of MAN construction,namely the core layer,the convergence layer and the access layer.