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联通宽带接入网技术建议书北京瑞斯康达科技发展有限公司二001年四月目录第一章公司简介1第二章产品技术特性2第三章产品运行情况13第四章服务15附录一RC101系列光纤收发器技术特点16附录二RC101FEXX系列光纤收发器技术特征22附件三RCNETWORKMANAGEMENTSYSTEM综述241第一章公司简介北京瑞斯康达科技发展有限公司是一家致力于宽带数据通信及宽带应用技术的高科技企业。公司集产品研发、生产、销售和系统集成于一体,为电信、有线电视、电力、铁路、石油及各行业用户提供极高性价比的宽带网络综合解决方案。公司凝聚了一批具有多年网络建设经验,认真负责、锐意进取的优秀人才,对网络技术的发展、应用及中国目前的网络技术水平有透彻的了解。经过全体员工的不懈努力,凭借雄厚的技术实力、丰富的市场经验,建立了在国内各个行业的市场网络;具备了在这些领域的竞争优势;为发展民族通信事业,提高国内数据通信应用水平做出了积极的贡献。作为宽带数据网络接入的热点技术,公司瞄准高带宽低成本的光纤通信产品,投入大量资金及技术力量自行研制了在0120公里无中继距离上各种速率的光纤收发器。以产品的高质量、强功能、极高的性价比和完善的售后服务赢得广大用户的信任。在产品质量上严格遵守国际规范,制作工艺可与国外名牌产品媲美;而产品功能上更加丰富、完善,某些方面超过了国外同类产品。该产品可以广泛应用于电信、有线电视、铁路、电力、石油及各种宽带数据网络连接领域。是高速网络接入、光纤到楼(到户)的基本设备,填补了国内通信产品在这方面的空白。公司创建两年来发展迅猛,生产能力、服务水平不断提高,月产量由2000年8月的1500台提高到2001年3月的5500台,设计月生产能力16000台的生产车间2001年4月2日投入使用,ISO9002贯标工作于2000年12月启动,公司全面按照严格的质量服务体系运行。针对宽带数据网络的后续产品正在研发,RC系列收发器行销全国24个省级直辖市,而且80以上的产品用于中国电信的宽带网络接入项目,我们的产品及服务在所到之处受到一致的好评。“创新,务实,共同发展”是公司宗旨。创新,是要我们在经营理念、技术更新中放开思路,走在国际通信技术的最前沿;务实,是要脚踏实地,充分考虑到中国国情及公司能力,认真做好每一件实事。共同发展是我们的目标,要让所有信任我们的用户、合作伙伴从我们的服务中受惠,与瑞斯康达共同发展。2第二章产品技术特性RC系列光收发器设计用于城域光纤数字宽带网络。该产品以高品质、高可靠性、高带宽、低价位的设计思路出发,定位于宽带网络接入市场。能够为用户提供带宽充足、性能稳定、功能强大、可用于电信级运营服务的低价位城域宽带光纤网络解决方案。RC系列光纤收发器吸收国外同类产品的优点,结合中国国情,产品更具灵活性和实用性。该产品采用结构灵活的机箱模块化设计,由一槽、十六槽(19”上架式)两种机箱及标准的热插拔模块组成。十六槽机箱内置双容错电源及无源背板总线,保证系统的高可靠性。传输模块中设计独到的交换核心,既可以支持骨干特性,如8021QVLANTAG、SPANNINGTREE,又可以将半双工直接转变为全双工传输,使端接设备使用HUB也可以支持长达100公里的传输;使系统组网更加灵活实用,而且大大降低组网时用户端的成本。RC系列收发器是由我公司自行研制的,自有知识产权,高品质电信级收发器产品,RC系列光纤收发器产品的核心优势就体现在为电信宽带接入网专门设计,是电信运营级的光纤接入产品。使该产品的技术优势与市场定位完全吻合。RC系列光纤收发器,在系统设计、质量控制、维护服务方面完全按照电信级运营水平进行管理。目前RC收发器已通过信息产业部入网产品质量检测。该产品的检测由信息产业部武汉光传输检测中心执行,以光纤传输设备质量要求进行检测。该产品在中国电信、有线电视等公用网络上已经过长时间商业运行。实践证明,该产品功能丰富、性能稳定,与不同厂商的网络设备互联兼容性好,安装简单、维护方便,适用于大规模商业运行。其主要技术特性表现在具有参考时钟的外调制方式,具有时钟恢复和重定时功能;高度的电磁屏蔽特性及良好的电磁兼容性;内置式高频通信专用电源;最小的光接入损耗;数据帧级的CRC校验及纠错功能;可以支持热插拔的机箱模块化设计;灵活的接入模式;高品质的传输质量;高度的系统可靠性及稳定性;原器件选择世界大电信产品厂商的主流器件3一、RC系列光纤收发器的广泛适用性尽管各厂商的以太网设备在IEEE8023及IEEE8023U的标准上是完全兼容的。但当将以太网用于城域网接入时,由于交换方式、双工模式、缓冲配置等实现方式的不同,就会出现各种各样的匹配问题。RC系列光纤收发器经过长时间应用中的不断改进,实现了与绝大多数以太网设备的良好匹配,可以适应各种不同厂商的以太网设备,在与CISCO、LUCENT、NORTEL、EXTREAM、FOUNDRY、3COM、CABELTRON、INTEL、华为、中兴、DLINK、长城等不同设备的互联商业应用中匹配良好、运行稳定。RC系列光纤收发器所有的工作参数采用自适应技术,为免配置产品RC101系列光纤收发器内置2端口高效交换核心,吞吐能力为148000PPS,8KMAC地址表,1MB共享动态缓存;在各大电信局的商业运行环境下性能表现稳定可靠通过RC系列收发器前面板上的状态指示灯可以准确判断故障点,可带电插拔的模块方便维护RC收发器在交换核心上提供码流的CRC及帧长度校验,同时通过1MB的动态缓存及交换核心能够过滤网上所有的UNICAST包,缓减因流量突发而导致的网络振荡,迅速缓减网络拥塞RC系列光纤收发器光接口完全符合IEEE8023U的100BASEFX全双工接口标准,可与符合该标准的各种产品互联,其电接口符合IEEE8023U的100BASETX标准,可与符合该标准的网络设备互联。在实际工程中已互联的网络设备有二、RC系列光纤收发器的可用性光纤收发器的可用性要由设计出发,从产品的可靠性、运行稳定性及服务的可持续性几个方面来综合考虑(一)可靠性1、电源电源线路板与主模块线路板为完全独立的两块PCB板;电源模块与主模块中间具有电磁屏蔽网;电源模块是通信专用的开关电源,提供过压及过流保护,电源输出纹波在标准输出为5VDC时纹波小于40MV,小于1;局端设备提供冗余电源,通过LOADSHARING方式为局端的光纤收发器提供最大限度的可靠性保证。无论局端设备还是用户端设备都有与外壳联接的保护地4而电源外置时主要有以下几个问题能否保证长时间稳定工作,主要是解决电源发热、电源外壳变软的问题。局端设备的放置、管理不方便。没有接地保护,增加运行风险。电源与设备之间的一段连接导线增加了电磁干扰。据国家质量监督局的统计结果,中国市场外接电源的合格率仅为54。2、电磁隔离电源对主电路板的电磁干扰主电路板因为布线的原因产生的电磁干扰为解决电源产生的电磁干扰,RC系列收发器的电源电路板与主电路板进行完全隔离,其次对电源进行屏蔽隔离。为解决布线原因产生的电磁干扰,RC系列收发器的主电路板采用四层电路板,电源线与地线布置与中间两层,这样可以大大减少因为电源线和地线的分布所产生的分布电容,从而减少电磁干扰,同时由于电源线与地线的表面积增大,可以大大改善主电路板的供电特性和散热特性。3、散热RC光纤收发器的散热主要有两种方式内置风扇散热主要用于局端的集成机箱,通过一个或数个风扇对整个局端机箱提供散热,这种散热方式,对风扇的依赖较大,如果风扇出现故障,对整个局端设备的运行会有较大影响。因此,风扇的可靠性会直接影响整机运行的可靠性。通过增大光纤收发器外壳的表面积散热主要用于用户端光纤收发器的散热。由于用户端产品的体积限制和发热程度,不宜采用风扇散热,主要的散热方式还是增大散热表面。4、光模块的选用光纤收发器的光模块主要有两种光收发分离的光模块光收发一体的光模块,其中内置信号放大器和滤波器RC系列光纤收发器采用国际知名厂商的光收发一体的光模块,内置滤波及放大器以提供良好的光特性和电气特性,保证数据传输有较高的可靠性。同时可以保证产品的大量及5时交付能力,以提高整体服务能力。5、主要芯片的选用光纤收发器所用到的核心芯片主要是数、模混合的PHY层芯片,RC光纤收发器选用INTEL的LX系列芯片,其研发和生产在数模混合电路的设计和生产中具有多年的经验,是同类技术的领军者。该芯片与CISCO的29XX交换机使用同样的驱动芯片,这样不但可以保证产品的技术可且可以保证产品的长期供应及服务能力。在IT界的残酷竞争中,很多小的IC设计制造商其生存能力是一个非常重要的考虑因素。(二)稳定性具有参考时钟的外调制方式,具有时钟恢复和重定时功能;高度的电磁屏蔽特性及良好的电磁兼容性;内置式高频通信专用电源;最小的光接入损耗;数据帧级的CRC校验及纠错功能;常温情况下的丢包率及误码率AND,LEADTOSAFEGUARDTHESOLEMNITYANDAUTHORITYOFTHEPARTYDISCIPLINE,ENSURETHATTHEPARTYDISCIPLINEANDTHELAWSANDREGULATIONSFORIMPLEMENTATIONINPLACETHROUGHOUTTHEDISCIPLINEINTHEDAILYSUPERVISIONANDMANAGEMENT,STRENGTHENSUPERVISIONANDINSPECTION,FROMTHETHOROUGHINVESTIGATIONOFVIOLATIONSOFDISCIPLINEBEHAVIORSTRENGTHENTOKEYAREAS,KEYDEPARTMENTSANDKEYPROJECTSASWELLASTHEMASSESREFLECTTHECONCENTRATIONOFTHEUNITSANDDEPARTMENTSFORSUPERVISIONSTRENGTHENINGSUPERVISION,DISCIPLINEINSPECTIONANDSUPERVISIONOFCADRESTOSETANEXAMPLEFORCOMPLIANCEWITHTHEANDISAMANMUSTBEHEXYL,BLACKSMITHNEEDSITSOWNHARDWAREDISCIPLINEINSPECTIONORGANSASTHEEXECUTOROFTHEPARTYDISCIPLINE,ANDSUPERVISOROFTHEDEFENDERS,FORITSSUPERVISIONMUSTBEMORESTRICTLY,DISCIPLINEINSPECTIONANDSUPERVISIONOFCADRESTOFIRMLYESTABLISHTHEAWARENESSOFPARTYCONSTITUTION,SENSEOFDISCIPLINE江苏联通接入网技术方案建议书北京瑞斯康达科技发展有限公司9ANDRULESCONSCIOUSNESS,POLITICSLOYALTY,SENSEOBEYACTIONSPEAKJIORDINANCETOSETANEXAMPLEOFTHEREGULATIONSOFTHERULEOFLAW,STRENGTHENSUPERVISIONANDACCEPTTHESUPERVISIONOFTHEFIRMNESSANDCONSCIOUSNESS,DOCOMPLYWITHANDTOFIRMLYESTABLISHTHEDISCIPLINEMUSTFIRSTBEDISCIPLINED,THESUPERVISORWILLBESUBJECTTOTHESUPERVISIONOF“CONCEPT,ANDCONSCIOUSLYSAFEGUARDANDIMPLEMENTPARTYCOMPASSESPARTY,TAKETHELEADINPRACTICING“THREESTRICTREALSTRICT,SOLOYAL,CLEAN,PLAYTOBEGOODATLEARNING,THECONSTITUTIONANDTHEASMORALITY,POLITICSA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