800M,Motorola无线集群通信系统SMartZone (转自MOTO8)

揸刀的小强 · 发表于 2007-8-17 11:43:00

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那是九四年的时候,我受聘于一家新成立的通信分司,名字叫做"重庆通信实业发展有限公司"实际上是引进的Motorola的集群通信系统,但它是多基站的系统.无委给公司了频点,800M的频点,公司是政俯下面的一公司,专门为重庆的应急调度指挥用的.当时,据说就全国就只有两家这样的公司.我呢,在公司的工作,就是编程,解码此系统的服务器发出来的数据,TCP/IP 的数据,多台UNIX的HP服务器,还有一台小型双备份多基站的服务器.我去的时候,设备还没有引进来,还在建设基站的过程中,Motorola公司给我们了一本全英文的数据格式样本,接收下来的数据用于计费,就有点象移动的计费系统差不多.于是,我们小组一共三个,闭门,就和这些数据打交道.我们装了一台UNIX的服务器,用C编了数据发送软件,依Motorola 的数据格式,以TCP/IP的方式不停的发数据,另外两台电脑就来收数据,并产生出计费的原始数据,用于数据库编程,要知道,那是94年,电脑很不发达,很多书没有,一切东找一点西找一点的搞,要知道,那时大哥大刚出来,数万元一台,基站建设,在不停的进行,当时有五个基站,其中一个是中心站.另有两个直放站.你们不要以为这样的基站很少.它和现在的手机基站不同,它是长距离远覆盖性质的.每个基站的覆盖范围是很大的,每个基站,有很多个信道机,信道机中,有一个信道机,叫着控制信道.控制信道机的设备,叫基站控制器.有一套微波,是用于联路传送的,有的微波是点对点的,中心站的微波有两套,基站的选址,是件很重要的事情,我选从选址说起,大家知道,重庆是个山城,当时没有卫星地图了.总工们,在部队找来了军事地图.这种地图当然一般人是看不到的，图上标得很样细，每座山的海拔多少，有几座山，什么的，这些对选址有很大的帮助。先在地图上大概看一下，然后呢，就开着车，带上场强仪，满山的跑，测场强，当然很多山上没有路，有点苦,我们小组经过三四个月的软件开发,终天初步的软件出炉了.公司一共有四十多人,每个人的分工不同,各忙各的.其中七八人左右被派往美国Motorola总部,培训,设备当然是早就定购了,那些设备是需要预定后制造的.他们一则去培训,二则去看设备制造情情况,三则去观光了,这些没有我的份了.在无线对讲组网中,一般分为两种,一种叫常规对讲,一种叫集群对讲两类.集群对讲是对讲系统的高级阶段.就算是今天,也同样是,只是变成了数字集群对讲系统.首先,我要简单讲一下常规对讲系统,然后再讲,集群对讲系统
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揸刀的小强 · 发表于 2007-8-17 11:45:00

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揸刀的小强 · 发表于 2007-8-17 11:51:00

搞无线通信,是需要很多仪器和设备的,没有了这些仪器与设备是没法搞,光凭万用表和示波器,两把烙铁,是不行的下面我将说到要用的一些非常有用的仪器首先是,假负载,这是必不可少的.在无线电的调试与维修中,无线电的能量要发射出去(电磁波).靠的是天线.天线发射是有效率的,我们通常叫柱波比.一部分功率发射出去了,还有一部分功率会反射回来,它们之比,就是柱波比了.在调试时,一付天线相差很大,接头,馈线,天线的几何心尺等等很多因素假负载,就是取代天线,发射机接上去,用处调试之用.当然接下来的,就是功率计了,它能测出发射的功率大小,以及柱波比,在无线电的测试中,最有用的设备.那就是终合参数测试议.我们简称"终参".这种设备,应该算是贵吧,所以一般的地方,是见不到的,也买不起,那些修对讲机的,卖对讲机的,修手机的,根本就没有用过.这种设备,只有专业的无线电厂,大通信设备公司,移动,联通,大的组网系统配置了的,我们公司当年进的这台终参,价格我不知道,但我只知道很贵.我用了很长一段时间.它,可以接收,1G之内的各种无线电信号,各种格式,并进行数据分析同时,它可以发射1G之内的各种无线电信号,各种格式的,我们常常用它来**900M的大哥大通话,当然这是违法的,当年这套系统非常好用，但慢慢的让gsm给替代了。要测试一台电台的功率,发射功率的波形,它的干拢,倍频.调制频偏什么的真的很方便.要测试一台电台的接收灵敏度,同样方便.它可以发射1G内连续的全波段的信号,它的频率准备度是相当高的,你不用担心它发出的频率会不会是435.125M之类的问题,因为它比一般的电台高出几个数量级.这些设备是昂贵的,但搞无线电,这些设备就象医院的CT机一样,它们才能看清无线电的本质.问题出在哪儿,怎样调试.无线电这东西,你真的是无法计算它能通多远,什么样的距离的信噪可以接受.相差太大了,所以说,说某某机子通通多少公里.发射功率又如何.接收灵敏度怎么,空中的干拢情况.那怎么才能搞清楚这些问题呢?那就需要另外一台设备,叫场强仪.它就是要接收信号的,能测出信号的强弱.信噪比的门限设在什么位置.这台设备,可以装在车上,到处跑,测每个山头,山腰,测出DBM的值是多少.当然还需要发射设备.我先简单讲一下,常规手台,车台接触最多的,是Motorola的GP68/GP88,说实话我对GP68不感冒我觉得象玩具.GP88非常的不错,很重,没有什么按键(实际上除了PTT,频道旋钮,音量开关就没有别的什么了),编频什么的,要借助于编程线与电脑和编程软件.机子打开后,接缝处有一圈防水橡胶圈.但打开机子,看到里面的零件设计,屏蔽盒.PCB板,功放块.你再看一下,马兰士的机子象C151,C451之类的,还有键伍的TK.日精N888之类的,是没有一个牌子可以和Motorola的相比.当然M机也最贵.Motorola 的对讲机,各种型号的,很多种,当然还包括集群对讲的800M机子,象什么838,VIP,2000,638它们都有一个共性.很重,用料很足,你完全可以当砖头使用.国产的对讲机,还有几百元的对讲机.我用过,修过(我曾搞对讲机维修两年).真的是不敢恭维.对讲机技术,它是工作的无线电的高频上面,大家知道高频是不好搞的.这不象手机的发展.好象国产手机还行吧,那是因为手机的销量好大,而对讲机的销量又有好大.再则手机的关键技术,芯片,在国外,对讲机的核心技术,国人是能搞,但和国外的差距很大.差不是难度有多少,技术含量有多高.说实话,对讲机的技术含量比手机差远了.然后,我至今没有看到过象样的国产机.对讲机的可靠性,要求很高的.很多机子是用一段时间就不行了.因为没有达到规范化生产与开发.我们公司这套集群对讲,和常规对讲,在使用上最大的区别,就是在频道旋钮改变,一个是改变的频率,一个则是改变的ID号.集群对讲的机子,每一台,都有一个ID号,和多个组ID号.它们的编号是6位数,701024,这样的数字,组ID号是801001,这样的规律.而常规对讲则是改变频率.比如:445.1250MHZ 451.2500MHZ等等为什么会这样呢,它们工作模式区别在哪儿呢,下面我将着重讲一下集群对讲的工作模式.这是一台800M的集群对讲机子中的一种,叫Motorola VISAR当然它也有U段的机子,这台机子给我留下了深刻的印象当年,老总接了一笔大单,某单位要此机.于是进了百多台此机,当时的价格是很贵的.卖价上万.但不知道是什么原因.这个单位没有要货,于是又把此机折价退了回去,损失被各同任传唱.
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揸刀的小强 · 发表于 2007-8-17 11:56:00

需要更正的是,上面提到的车台,重庆的老大们,他们的车台不是这种型号,比这个高一个级别,打电话是双功的,发射功率达到了25WID号就象手机号码一样,只不过集群手机,还有一个组号,这就是用于组的呼叫,如果组号相同,这个组内的每个用户每能听见,能不能发起呼叫,还要看它是否为这个权限,这就象QQ的群类似.手机,在不同的基站的覆盖范围内,它们可以共同在一个组号内完成通话,当然,不同基站的信号是通过站与站的微波连接.象这样的组号,一台移动设备可以编多个.当然,也可以单对单的通信,只要输入对方的ID号,就能完成,但这一功能的实现,需要带键盘的手机与车台.不同的组有不同的权限.但也可以把不同的组进行组合成一个大组.这样的功能,只能在中心站来完成.当中心站接到受权后,可以把任意的两个组进行合并.那么合并的组,就能通信了.以上这些,不是简单的通过变频来完成的.这一切都是由电脑来完成.前面说了.控制信道,实际上,每个手机与车台,在自已的基站内.首先就是注册,它们都是守在控制信道的频点上ID号,与组号都是虚拟的号码,真正要完成通信,靠的是频率,每台机子守在控制信道的频率上,当有了指令后,控制信道就会把下面的手机,车台调度到相同的一个信道(同一个基站,同一个频率上).完成通话,但这并没有完成.下一次,任一组内成员,按动PTT,频率将会是在另一个信道的另一个频点上,也就是频率不停的在变化.这就是跳频.信道的利用率那会提高数倍,同时,将还有一个排队的机制,当第个信道忙时,就会出现排队情况,一旦某个信道空闲了.下一个通信将占用此信道.空中频率是一种资源,这是一种有限的资源.**官员们把它看成很宝贵的东西.一般的单位是很难伸请到频点,如果,你常常关心通信方面的,你不难看出,现在的手机900M,联通也好,移动也好,他们的频点如果在国外,将经过竞拍而得.3G手机,最关键的也是频点.这是无形的,也是昂贵的.所以,为什么会出现集群通信,它是在常规通信的基础上发展起来的,说穿了,就是提高频点的利用率.这也就是为什么,国家要关停模拟手机,开通数字手机的道理.闭路电视也是最好的例子,开通数字电视,关停模拟电视,每家送机顶盒,就是这个道理.归根到底,就是要把有限的频率带宽,拿来赚更多的钱.常规对讲机与集群对讲机最大的区别是什么:区别就在按下"PTT"键的1秒钟内.集群对讲机,当你按下"PTT"时,1秒后会听到"嘟,嘟"两声.这表示,你的通信连接已建立成功,可能通话了.就是这1秒钟内,整套集群系统,中心基站的服务器,微波,信道机,每一个部件,都在为你准备,就在这1秒钟之内完成.常规对讲机,当你一按下"PTT"时,就开始发射了.这就是最大的区别,这是一遍在网上搜索的关天集群通信一篇报道:<a href="https://www.21ctn.com/news/05-0404/81.htm" target="_blank"><font color="#000000">https://www.21ctn.com/news/05-0404/81.htm</font></a>上文提到了,关天smartnet 与 smartzonesmartnet是基站与基站之间没有连接的通信,而smartzone 是智慧网,是多基站有连接的大网.也提到了时间,是99-2001年大量出现.然而我所在公司,是94年就建成,5基站+两直放站.投入资金是三千多万

揸刀的小强 · 发表于 2007-8-17 11:52:00

这是800M的一种车台,我们安装得最多的机子之子.它的手柄有两种,还有一种是带按键的,可以用于打电话.后面我将会讲到对讲机如何打电话.这种型号的机子,我们广范安装在了重庆的出租车上,重庆消防车上,高速公路上收费站上,银员的押抄车上,还有司法,押送犯人的车上,当然还有**的应急指挥车上(**的四大班子的小桥车上),当然市长,**的奥的车上是少不了的.
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揸刀的小强 · 发表于 2007-8-23 12:22:00

Motorola SmartZone(smartnet) 无线集群通信系统,在网上能搜到的资料很少.是因为这是很多年前的系统了,它目前已被数据集群那取代.那时,互联还没有开始,也没法上网,能有一台Modem,就很不错了.系统的内部信令是保密的,从Motorola引进,只是引进的设备,系统,以及教你如果使用与操作.它的软件工作原理,故障的排除,很多都是保密的,中心基站的UNIX服务器,有三台.里面的口令,我们没法知道.我们能知道的是一些日常维护的口令.下面我将讲叙中心基站的电脑系统的工作原理, 怎样维护.有些什么样设备.首先,从Modem说起,这台Modem 是9600波特的,牌子当然也是motorola 的，这台modem 不是一般的Ｍodem，它非常贵．它与一台ＨＰ的ＵＮＩＸ服务器连接．然后呢，就是连接电话线了．它的作用，就是提供给远在美国的工程师，进行远程故障诊断，以及参数搞整，有点象现在的ＱＱ上的远程协助，但它是通过国际电话线路进行的，那时没有互联网．HP的服务器，非常的薄，但面积很大．有一台光驱．最为奇怪的是它的显示器，它是一台黑白的显示器．尺寸非常的大.但显于的精度非常的高，里面装的是X-windows的东西．它的作用就是管理手机．车台，很多功能，靠它来管理.当然，少不了网络联接．不过不是RJ45的水晶头，而是同轴电缆．这台服务器，下面带有一台终端机，就是没有硬盘的电脑，靠网络联接．所有操作在这台终端上完成.主服务器: 怎么说它的,首先它很贵,价格嘛,只是听其它人说,数十万$,样子嘛,象一个柜子,高大约1.2米,宽约0.8米,上面放着一台黑白的显示器,严格来说,应算是RS232的终端机.服务器,没有光驱,没有软驱,是用的磁带机,它的大小,就根家里的录相带差不多大,但要溥些.里面的板卡,一块块的,全是热拔插的,热备份的.CPU是专门的板子,有两块,当然两块一样的,热备份嘛.硬盘,也是两台热备份的,容量嘛,300M,不要笑哈,这是94年哟.电源也是双备份的,还有接口板,实际上是RS232的串口.它的作用就是控制各个基站.信息当然是靠加拿大生产的SRT一点多址的微波传送到其它的基站的基站信道控制器上.有一台,是专门的调台,它是一台486的电脑,和一台语音设备,当然配了MIC和音箱.主要功能,就是不同小组进行重组.使得两个不同的组组合在一起,这是一般常规对讲机不可能达到的功能.几个小组就构成了一个大组.在组内就能调配了.还有一个电脑,它没有和其它电脑通过网络连接.主要是监测空中组呼叫的情况,它的信息来源,靠的是一台电台,当电台收到空中的信号时,就把其中的信令解码,然后通过电脑显于某某组在呼叫,某某ID在呼叫,另外就是我们开发的计费系统了,一台Dell的近两万一台的486,配置了软驱,磁带机,和3C509的网卡.这台主要就是接收数据的机子,收下来的数据,将交给另外的电脑进行计费.这台电脑装的是UNIX操作系统,软件很难找,我们在一个研究所才考了一套UNIX软件,一共33张1.2M的软盘.当然还有另外的东西,就是TCP/IP的C语言开发软件包.接下来,我将介绍微波的情况.

PN(BG7PSY) · 发表于 2007-8-23 16:45:00

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<option value="-1">选择国家/地区</option>
<option value="https://www.motorola.com/governmentandenterprise/bt/en-sg/public/functions/home/home.aspx?;BT;NV">不丹</option>
<option value="https://www.motorola.com/cn;CN;cn">中国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_858i;NV">中非共和国</option>
<option value="https://www.motorola.com/dk;DK;dk">丹麦</option>
<option value="https://www.motorola.com/ua;UA;ua">乌克兰</option>
<option value="https://www.motorola.com/uz;UZ;uz">乌兹别克斯坦</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_901i;NV">乌干达</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_916i;NV">乌拉圭</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_859i;NV">乍得</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;YE;NV">也门</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;AM;NV">亚美尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/il/en-us/public/functions/home/home.aspx;IL;il">以色列</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;IQ;NV">伊拉克</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;IR;NV">伊朗</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_924i;NV">伯利兹</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_857i;NV">佛得角</option>
<option value="https://www.motorola.com/ru;RU;ru">俄罗斯</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;BG;NV">保加利亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;HR;NV">克罗地亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_2549i;NV">冈比亚</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;IS;NV">冰岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_871i;NV">几内亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_868i;NV">几内亚（比绍）</option>
<option value="https://www.motorola.com/governmentandenterprise/cemea/en-gb/public/functions/home/home.aspx;LI;NV">列支敦士登</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_861i;NV">刚果</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2544i/en-gb/public/functions/home/home.aspx;id_876i;NV">利比亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_875i;NV">利比里亚</option>
<option value="https://www.motorola.ca;CA;CA">加拿大</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_870i;NV">加纳</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_869i;NV">加蓬</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;id_905i;NV">加那利群岛</option>
<option value="https://www.motorola.hu;HU;HU">匈牙利</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_862i;NV">北非</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx?country=za&refer=country;id_895i;id_89">南非</option>
<option value="https://www.motorola.com/kr;KR;kr">南韩</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_853i;NV">博茨瓦纳</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;QA;NV">卡塔尔</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_889i;NV">卢旺达</option>
<option value="https://www.motorola.com/governmentandenterprise/cemea/en-gb/public/functions/home/home.aspx;LU;NV">卢森堡公国</option>
<option value="https://www.motorola.com/in;id_2003i;in">印度</option>
<option value="https://www.motorola.com/id;id_2015i;id">印度尼西亚</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2022i;NV">危地马拉</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_910i;ec">厄瓜多尔</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_866i;NV">厄立特里亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;SY;NV">叙利亚</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2026i;NV">古巴</option>
<option value="https://www.motorola.com/tw;TW;tw">台Wan</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;KG;NV">吉尔吉斯</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_863i;NV">吉布提</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;KZ;NV">哈萨克</option>
<option value="https://www.motorola.com/co;id_702i;co">哥伦比亚</option>
<option value="https://www.motorola.com/cr;id_2024i;cr">哥斯达黎加</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_856i;NV">喀麦隆</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;TM;NV">土库曼斯坦</option>
<option value="https://www.motorola.com/tr;TR;tr">土耳其</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_945i;NV">圣卢西亚</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_944i;NV">圣基茨和尼维斯</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_890i;NV">圣多美和普林西比</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_947i;NV">圣文森特和格林纳丁斯</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_946i;NV">圣马丁</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;id_908i;NV">圣马力诺</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_935i;NV">圭亚那</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_898i;NV">坦桑尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2544i/en-gb/public/functions/home/home.aspx;id_864i;NV">埃及</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx ;id_867i;NV">埃塞俄比亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_891i;NV">塞内加尔</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;id_846i;NV">塞尔维亚和黑山</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_893i;NV">塞拉利昂</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_892i;NV">塞舌尔</option>
<option value="https://www.motorola.com/mx;id_1653i;mx">墨西哥</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_899i;NV">多哥</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_928i;NV">多米尼加</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_929i;NV">多米尼加共和国</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_931i;NV">大开曼</option>
<option value="https://www.motorola.com/at;AT;at">奥地利</option>
<option value="https://www.motorola.com/ve;id_281i;ve">委内瑞拉</option>
<option value="https://www.motorola.com/governmentandenterprise/bd/en-sg/public/functions/home/home.aspx?;BD;NV">孟加拉国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_851i;NV">安哥拉</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_919i;NV">安圭拉岛</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_920i;NV">安提瓜和巴布达</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx?country=ad&refer=country;AD;AD">安道尔共和国</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2020i;NV">尼加拉瓜</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_887i;NV">尼日利亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_886i;NV">尼日尔</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2001i/en-sg/public/functions/home/home.aspx?;id_2001i;NV">尼泊尔</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;id_848i;NV">巴勒斯坦</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_922i;NV">巴哈马群岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;id_2002i;NV">巴基斯坦</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_923i;NV">巴巴多斯岛</option>
<option value="https://www.motorola.com/governmentandenterprise/pg/en-sg/public/functions/home/home.aspx;PG;NV">巴布亚新几内亚</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_917i;NV">巴拉圭</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2025i;NV">巴拿马</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;BH;NV">巴林</option>
<option value="https://www.motorola.com/br/;id_1654i;br">巴西</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_854i;NV">布基纳法索</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_855i;NV">布隆迪</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;GR;NV">希腊</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2005i/en-sg/public/functions/home/home.aspx?;id_2005i;NV">帕劳群岛</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_927i;NV">库拉索岛</option>
<option value="https://www.motorola.com/de;DE;de">德国</option>
<option value="https://www.motorola.com/it;IT;it">意大利</option>
<option value="https://www.motorola.com/governmentandenterprise/id_728i/en-gb/public/functions/home/home.aspx;LV;NV">拉脱维亚</option>
<option value="https://www.motorola.com/no;NO;no">挪威</option>
<option value="https://www.motorola.com/cz;CZ;cz">捷克共和国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;MD;NV">摩尔多瓦</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2544i/en-gb/public/functions/home/home.aspx?country=ma&refer=country;id_883i;id_88">摩洛哥</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;MC;NV">摩纳哥</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2008i/en-sg/public/functions/home/home.aspx?;id_2008i;NV">文莱</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_897i;NV">斯威士兰</option>
<option value="https://www.motorola.com/sk;SK;sk">斯洛伐克共和国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;id_847i;NV">斯洛文尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2000i/en-sg/public/functions/home/home.aspx;id_2000i;NV">斯里兰卡</option>
<option value="https://www.motorola.com/sg;id_2013i;sg">新加坡</option>
<option value="https://www.motorola.com/governmentandenterprise/nz/en-sg/public/functions/home/home.aspx;NZ;NV">新西兰</option>
<option value="https://www.motorola.com/jp;JP;jp">日本</option>
<option value="https://www.motorola.com/cl;id_914i;cl">智利</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2009i/en-sg/public/functions/home/home.aspx?;id_2009i;NV">柬埔寨</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_932i;NV">格林纳达</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;GL;NV">格陵兰</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;GE;NV">格鲁吉亚</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;VA;NV">梵蒂冈</option>
<option value="https://www.motorola.com/governmentandenterprise/cemea/en-gb/public/functions/home/home.aspx?country=be&refer=country;BE;BE">比利时</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_880i;NV">毛利塔尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_881i;NV">毛里求斯</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;SA;NV">沙特阿拉伯</option>
<option value="https://www.motorola.com/fr;id_2018i;fr">法国</option>
<option value="https://www.motorola.com/pl;PL;pl">波兰</option>
<option value="https://www.motorola.com/pr;PR;pr">波多黎各</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;BA;NV">波斯尼亚和黑塞哥维那</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2012i/en-sg/public/functions/home/home.aspx?country=th&refer=country;id_2012i;id_20">泰国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_904i;NV">津巴布韦</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2021i;NV">洪都拉斯</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_936i;NV">海地</option>
<option value="https://www.motorola.com/au ;AU;au">澳大利亚</option>
<option value="https://www.motorola.com/ie;IE;ie">爱尔兰</option>
<option value="https://www.motorola.com/governmentandenterprise/id_728i/en-gb/public/functions/home/home.aspx;EE;NV">爱沙尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_938i;NV">牙买加</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_2358i;NV">特克斯和凯科斯群岛</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_949i;NV">特立尼达和多巴哥</option>
<option value="https://www.motorola.com/governmentandenterprise/id_698i/es-co/public/functions/home/home.aspx?;id_918i;NV">玻利维亚</option>
<option value="https://www.motorola.com/se;SE;se">瑞典</option>
<option value="https://www.motorola.com/governmentandenterprise/de/de-de/public/functions/microsite/microsite.aspx?site=de_DE/microsites/schweiz;CH;CH">瑞士</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_933i;NV">瓜德罗普岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_888i;NV">留尼旺岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;BY;NV">白俄罗斯</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_925i;NV">百慕大</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;GI;NV">直布罗陀</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;KW;NV">科威特</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_860i;NV">科摩罗</option>
<option value="https://www.motorola.com/pe;id_915i;pe">秘鲁</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2544i/en-gb/public/functions/home/home.aspx;id_900i;NV">突尼斯</option>
<option value="https://www.motorola.com/governmentandenterprise/id_728i/en-gb/public/functions/home/home.aspx;LT;NV">立陶宛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_894i;NV">索马里</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;JO;NV">约旦</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_885i;NV">纳米比亚</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_950i;NV">维尔京群岛</option>
<option value="https://www.motorola.com/ro;RO;ro">罗马尼亚</option>
<option value="https://www.motorola.com/us;US;us">美国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2010i/en-sg/public/functions/home/home.aspx?;id_2010i;NV">老挝</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_873i;NV">肯尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx?country=fi&refer=country;FI;FI">芬兰</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2545i/en-gb/public/functions/home/home.aspx;id_896i;NV">苏丹</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_948i;NV">苏里南</option>
<option value="https://www.motorola.com/uk;UK;uk">英国</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx?country=nl&refer=country;NL;NL">荷兰</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_941i;NV">荷属安地列斯群岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_884i;NV">莫桑比克</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_874i;NV">莱索托</option>
<option value="https://www.motorola.com/ph;id_2007i;ph">菲律宾</option>
<option value="https://www.motorola.com/governmentandenterprise/amlat/es-co/public/functions/home/home.aspx;id_2023i;NV">萨尔瓦多</option>
<option value="https://www.motorola.com/pt;PT;pt">葡萄牙</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_940i;NV">蒙特塞拉特岛</option>
<option value="https://www.motorola.com/es;ES;es">西班牙</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_872i;NV">象牙海岸</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_852i;NV">贝宁</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_903i;NV">赞比亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2543i/en-gb/public/functions/home/home.aspx;id_865i;NV">赤道几内亚</option>
<option value="https://www.motorola.com/vn;id_2011i;vn">越南</option>
<option value="https://www.motorola.com/governmentandenterprise/id_713i/en-gb/public/functions/home/home.aspx;AZ;NV">阿塞拜疆</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2006i/en-sg/public/functions/home/home.aspx?;id_2006i;NV">阿富汗</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2544i/en-gb/public/functions/home/home.aspx;id_850i;NV">阿尔及利亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;AL;NV">阿尔巴尼亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;id_849i;NV">阿拉伯联合酋长国</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;OM;NV">阿曼</option>
<option value="https://www.motorola.com/ar;AR;ar">阿根廷</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_921i;NV">阿鲁巴岛</option>
<option value="https://www.motorola.com/hk;HK;hk">香港</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;MK;NV">马其顿</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2004i/en-sg/public/functions/home/home.aspx?;id_2004i;NV">马尔代夫</option>
<option value="https://www.motorola.com/governmentandenterprise/wemea/en-gb/public/functions/home/home.aspx;id_907i;NV">马德拉群岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_878i;NV">马拉维</option>
<option value="https://www.motorola.com/governmentandenterprise/latam/en-co/public/functions/home/home.aspx;id_939i;NV">马提尼克岛</option>
<option value="https://www.motorola.com/my;id_2014i;my">马来西亚</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_882i;NV">马约特岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_1655i/en-gb/public/functions/home/home.aspx;MT;NV">马耳他</option>
<option value="https://www.motorola.com/governmentandenterprise/id_748i/en-gb/public/functions/home/home.aspx;id_877i;NV">马达加斯加岛</option>
<option value="https://www.motorola.com/governmentandenterprise/id_2546i/en-gb/public/functions/home/home.aspx;id_879i;NV">马里</option>
<option value="https://www.motorola.com/governmentandenterprise/id_747i/en-gb/public/functions/home/home.aspx;LB;NV">黎巴嫩</option></select>
</td><td></td></tr></tbody></table></td></tr><tr><td width="100%"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td><table border="0"><tbody><tr><td><img id="_ctl1_imgNewSpacer2" height="6" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr><tr><td> <span class="currentCountry" id="_ctl1_lblRegion">中国</span>
</td></tr></tbody></table></td><td width="28"><img id="_ctl1_imgNewSpacer3" height="1" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="28" alt=""/></td><td valign="top" width="1"><img id="_ctl1_imgNewDevider" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/divider.gif" width="1" alt=""/></td><td valign="middle" width="100%"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td><img id="_ctl1_imgNewSpacer4" height="9" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr></tbody></table><table id="_ctl1_Table2" cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td valign="middle"><table class="tblConstHeader" cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr valign="middle"><td valign="middle" nowrap="true" align="left" width="100%"><img height="20" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="23" alt=""/><a class="mnavAnc" href="https://www.motorola.com.cn/">摩托罗拉首页</a><img height="1" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="23" alt=""/><a class="mnavAnc" href="https://www.motorola.com.cn/about/">关于摩托罗拉</a><img height="1" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="23" alt=""/><a class="mnavAnc" href="https://www.motorola.com.cn/all_products.asp">产品与服务</a></td></tr></tbody></table><table class="spacertable" cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td><img height="23" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="23" alt=""/></td><td nowrap="true"><span class="v4countrysel">简体中文</span> <a class="v4countrylink" href="https://www.motorola.com/governmentandenterprise/cn/en-SG/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i/id_1844i/id_1841i">英文</a> </td><td width="100%"> </td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td colspan="2"><img id="_ctl1_imgSpacer2" height="13" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/pixel.gif" width="1" name="imgSpacer2" alt=""/></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0" style="BACKGROUND: url(/Display/public/resources/images/chrome/v1/grad.gif) repeat-x 0% 50%; moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial;"><tbody><tr><td width="100%" style="BACKGROUND: url(/Display/public/resources/images/chrome/v1/grad.gif) repeat-x 0% 50%; moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial;"><img id="_ctl1_imgNewSpacer5" height="8" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" alt=""/></td></tr></tbody></table><input id="_ctl1_hdnAlrtMessage" type="hidden" name="_ctl1:hdnAlrtMessage"/>
<table cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Constituency/Section Header module." border="0"><tbody><tr><td width="15"><img id="_ctl3_imgNewSpacer1" height="30" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td><td class="constituencyHeader"><span class="constituencyHeader" id="_ctl3_lblConstituencyTitle">**及企业移动解决方案部</span></td><td class="constituencyLogin" valign="middle" align="right"><a class="lnDark" id="_ctl3_Hyperlink3" href="https://feedback.motorola.com/governmentandenterprise/cn/ch-sp/login.aspx">登录</a> | <a class="lnDark" id="_ctl3_Hyperlink1" href="https://feedback.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/profile/registration.aspx">注册</a> | <a class="lnDark" id="_ctl3_Hyperlink2" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/xd.aspx?xml=zh_ch/webdisplay/utility/live_pmg_why_register.xml&pagename=为什么注册？">为什么注册？</a></td></tr></tbody></table></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="755" border="0"><tbody><tr><td width="5"> </td><td></td><td width="750"><table class="Breadcrumb" cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="crumbs"><a id="_ctl4_Hyperlink_Home" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/home/home.aspx">**及企业移动解决方案部</a><a id="_ctl4_Hyperlink0" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browseproduct/productservices.aspx?navigationpath=id_801i">> 产品及零配件</a><a id="_ctl4_Hyperlink1" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i">> 无线电通讯系统</a><a id="_ctl4_Hyperlink2" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i">> 语音网络</a><a id="_ctl4_Hyperlink3" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i">> 集群无线电设备</a><a id="_ctl4_Hyperlink4" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i/id_1844i">> TETRA 解决方案</a><a id="_ctl4_Hyperlink5">> 什么是TETRA?</a></td></tr></tbody></table></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="750" border="0" style="MARGIN-LEFT: 10px;"><tbody><tr><td valign="top"><div id="pnlthreegrid"><table cellspacing="0" cellpadding="0" width="170"><tbody><tr><td valign="top" width="100%"><table class="LeftHandNavigation" id="_ctl5_htmlTable" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Left Hand Navigation module." border="0"><tbody><tr><td class="leftnavtop"><img id="_ctl5_imgNewSpacer1" height="21" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr><tr><td class="container"><ul><li><a class="navDark" id="_ctl5_Hyperlinkid_801i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browseproduct/productservices.aspx?navigationpath=id_801i">产品及零配件</a>
</li><li class="parent"><ul class="sub"><li><a class="navDark" id="_ctl5_id_1388i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browseproduct/transnavone.aspx?navigationpath=id_801i/id_1388i">手持对讲机及零配件</a>
</li><li><a class="navDark" id="_ctl5_id_1387i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browseproduct/transnavone.aspx?navigationpath=id_801i/id_1387i">车载台及零配件</a>
</li><li><a class="navDark" id="_ctl5_id_1386i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browseproduct/transnavone.aspx?navigationpath=id_801i/id_1386i">固定电台</a>
</li><li class="Currentlast">无线电通讯系统</li></ul></li><li><a class="navDark" id="_ctl5_Hyperlinkid_802i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_802i">解决方案</a>
</li><li><a class="navDark" id="_ctl5_Hyperlinkid_804i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_804i">服务及维修</a>
</li><li><a class="navDark" id="_ctl5_Hyperlinkid_805i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_805i">摩托罗拉的历史</a>
</li><li><a class="navDark" id="_ctl5_Hyperlinkid_807i" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_807i">合作伙伴</a>
</li><li class="last"><a class="navDark" id="_ctl5_HyperlinklvlZViewDownload" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/viewdownload/viewdownload.aspx?navigationpath=lvlzviewdownload">下载</a>
</li></ul></td></tr><tr><td class="leftnavbot"><img id="_ctl5_imgNewSpacer2" height="26" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr></tbody></table><table class="LeftHandNavigation" id="_ctl6_htmlTable" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Functional Navigation module." border="0" style="MARGIN-TOP: 15px;"><tbody><tr><td class="leftnavtop"><img id="_ctl6_imgNewSpacer1" height="21" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr><tr><td class="container"><ul><li><a class="navDark" id="_ctl6_Hyperlink0" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/dealerlocator/dealerlocator.aspx"> 分销商信息</a>
</li><li class="last"><a class="navDark" id="_ctl6_Hyperlink1" href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/contactus/contactus.aspx">与我们联系</a>
</li></ul></td></tr><tr><td class="leftnavbot"><img id="_ctl6_imgNewSpacer2" height="26" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr></tbody></table><script language="Javascript">[script]null[/script]</script>
<table id="_ctl7_htmlTable1" cellspacing="0" cellpadding="0" width="175" border="0"><tbody><tr><td class="leftmoduletop"><img id="_ctl7_imgNewSpacer6" height="8" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr></tbody></table><table class="leftmodulebck" id="_ctl7_htmlTable" cellspacing="0" cellpadding="0" width="175" border="0"><tbody><tr><td valign="top"><table class="spacertable" cellspacing="0" cellpadding="0" width="175" border="0"><tbody><tr><td width="8" rowspan="3"><img id="_ctl7_imgNewSpacer1" height="58" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td><td class="subheader" width="160"><span class="label" id="_ctl7_lblViewProduct">查询产品</span></td><td width="7" rowspan="3"><img id="_ctl7_imgNewSpacer2" height="4" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr><tr><td width="160"><select id="_ctl7_cboQuickList" name="_ctl7:cboQuickList" style="FONT: 10px verdana,arial,helvetica; WIDTH: 155px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-DECORATION: none; font-size-adjust: none; font-stretch: normal;">
<option value="请选择">请选择</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_464i">个人安全</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_826i">公共安全</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_386i">公用事业</option>
<option value="/public/functions/browseproduct/Transnavone.aspx?navigationpath=id_801i/id_1386i">固定电台</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_2589i">奥林匹克体育运动</option>
<option value="/public/functions/browseproduct/Transnavone.aspx?navigationpath=id_801i/id_1388i">手持对讲机及零配件</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_801i/id_953i">无线电通讯系统</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_842i">石油与天然气行业</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i">语音网络</option>
<option value="/public/functions/browseproduct/Transnavone.aspx?navigationpath=id_801i/id_1387i">车载台及零配件</option>
<option value="/public/functions/browsesolution/Browsesolution.aspx?navigationpath=id_802i/id_387i">运输业</option></select>
</td></tr><tr><td width="160"><table cellspacing="0" cellpadding="0" width="160" border="0"><tbody><tr><td colspan="3"><img id="_ctl7_imgNewSpacer3" height="3" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr><tr><td width="135"><div align="right">去</div></td><td width="5"><img id="_ctl7_imgNewSpacer4" height="4" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td><td width="20"><a href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i/id_1844i/id_1841i#"><img src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/arr_blue2x.gif" border="0" alt=""/><img alt=""/></a></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="175" border="0"><tbody><tr><td class="leftmodulebot"><img id="_ctl7_imgNewSpacer5" height="12" src="https://www.motorola.com/governmentandenterprise/public/resources/images/chrome/v1/spacer.gif" width="1" alt=""/></td></tr></tbody></table></td></tr></tbody></table></div></td><td width="20"> </td><td valign="top" width="560"><a class="alertred" id="lnkError" href="javascript:__doPostBack('lnkError','')"></a><div id="pnlpageheader"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td align="left"><table cellspacing="0" cellpadding="0" width="560" border="0" xmlnsfo="https://www.w3.org/1999/XSL/Format"><tbody><tr><td width="100%"><table class="PageHeader" id="short" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h1>什么是 TETRA？</h1></td></tr></tbody></table></td></tr><tr><td width="100%"><table class="InteriorNavigation" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Interior Navigation module." border="0"><tbody><tr><td class="flag" width="1"> </td><td width="99%"><table cellspacing="0" width="100%" border="0"><tbody><tr><td><img src="https://www.motorola.com/governmentandenterprise/public/resources/images/ArrowBtnSmBlue.gif" border="0" alt=""/><a href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i/id_1844i/id_1841i/ssone1">背景简介</a></td><td><img src="https://www.motorola.com/governmentandenterprise/public/resources/images/ArrowBtnSmBlue.gif" border="0" alt=""/><a href="https://www.motorola.com/governmentandenterprise/cn/ch-sp/public/functions/browsesolution/browsesolution.aspx?navigationpath=id_801i/id_953i/id_1043i/id_177i/id_1844i/id_1841i/ssone2">健康与安全</a></td></tr><tr><td></td></tr></tbody></table></td></tr></tbody></table></td></tr><tr><td width="100%"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td width="100%"><table cellspacing="0" cellpadding="0" width="100%" border="0"><colgroup><col width="369"></col><col width="20"></col><col width="171"></col></colgroup><tbody><tr><td width="389"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="SolnPageIntroductionText" width="100%"></td></tr></tbody></table>
<table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td width="369"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td width="100%"><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td>陆上集群无线系统 (TETRA) 是欧洲电信标准协会 (ETSI) 为满足要求严格的专业移动无线电用户的需求，而制定的一个开放的数字集群无线通信标准。</td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>TETRA 推出之前</h2></td></tr></tbody></table></td></tr><tr><td><table class="Table_Bot_Padding" cellspacing="0" cellpadding="0"><colgroup><col width="171"></col><col width="20"></col><col width="171"></col></colgroup><tbody><tr><td><img height="130" src="https://www.motorola.com/governmentandenterprise/contentdir/zh_CH/Images/ProductPhotography/Hist_police_72_171x130.jpg" width="171" border="0" alt=""/></td><td></td><td><b>简单、开放的信道通信</b><ul><li>使用者能听到其他人中每个人的通话</li><li>优先服务</li><li>重要消息没有优先权</li></ul><b>信号覆盖范围有限</b><ul><li>无线电环境盲点</li><li>出覆盖区没有弥补手段</li></ul></td></tr><tr><td><b>传统的模拟技术</b><ul><li>对话内容可能难以听清</li><li>背景噪音大时通话质量降低</li><li>重要信息可能丢失</li><li>频率容易扫描，对操作构成威胁</li></ul><b>每个团队各自独立</b><ul><li>机构间的互操作能力很小</li><li>遇到事件和危机时管理起来比较困难</li></ul></td><td></td><td><img height="130" src="https://www.motorola.com/governmentandenterprise/contentdir/zh_CH/Images/ProductPhotography/Hist_police2_72_171x130.jpg" width="171" border="0" alt=""/></td></tr></tbody></table></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>为什么选择 TETRA？</h2></td></tr></tbody></table></td></tr><tr><td>用一个内聚性双向无线电网络支持多个团队</td></tr><tr><td><ul><li>用于进行自己的业务通信的专用网络<ul><li>用 1 部用户机可以进行语音、数据和电话呼叫</li></ul></li><li>可以在同一个网络上与其他组通信<ul><li>通信响应能力得到提高</li><li>支持在紧急情况时进行危机管理</li></ul></li><li>优化资源使用<ul><li>用户群和投资战略得到调整，覆盖面更广</li><li>先进的技术，能帮助您以新的方式开展业务</li></ul></li></ul></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>支持把用户驱动的 TETRA 标准用于集成、可控的通信</h2></td></tr></tbody></table></td></tr><tr><td><ul><li>下一代数字移动通信的开放标准</li><li>集双向无线电、移动电话、消息传送及数据传输的众多优势于一体</li><li>促进多提供商环境的发展</li><li>可以立即与一个、十个甚至上百个团队的成员建立联系</li><li>公共安全部门所信赖的面向关键任务的通信技术</li></ul></td></tr><tr><td class="WebCentralImage"><img height="280" src="https://www.motorola.com/governmentandenterprise/contentdir/zh_CH/Images/ProductPhotography/WhatisTETRA_72_361x280.gif" width="361" border="0" alt=""/></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>把公共安全的专业应用与 TETRA 数字集群无线技术相结合</h2></td></tr></tbody></table></td></tr><tr><td><ul><li>装备指挥与控制中心，提高响应速度</li><li>人员之间频繁通信保障安全，倍感放心</li><li>具有极强的复原能力，保障通信的正常进行</li><li>操作资源和事件管理的控制得到简化</li><li>将移动通信系统与其他信息系统集成</li><li>安全通信，有效应对越来越老练的各类罪犯</li><li>具备网络可扩容性和灵活性，可以降低投资费用和运行成本</li><li>根据紧急事件和关键任务工作环境中用户的要求而设计的产品</li><li>具备无线平台上的最高可靠性和连接性</li><li>以摩托罗拉服务、维护、培训及支持为后盾</li></ul></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>摩托罗拉的 TETRA 解决方案系列 — 功能丰富，好处多多</h2></td></tr></tbody></table></td></tr><tr><td><ul><li>完整的企业解决方案，囊括了产品、应用程序和服务</li><li>提供各种产品和功能，引领 TETRA 市场</li><li>支持在各个频段使用，包括 800 MHz</li><li>性能可靠，是成熟的技术和关键任务实施经验的结晶</li><li>功能丰富，超过 TETRA 规范要求</li><li>关键时刻，为您提供强大支持和操作能力</li><li>精心设计，便于终端用户和网络操作员使用</li><li>可扩容，灵活性好</li><li>安全</li></ul></td></tr><tr><td><b>全球第一个提供符合 TETRA 标准的基于 IP 的系统</b></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>为全球执行关键任务和关键业务客户提供快速移动的智能产品</h2></td></tr></tbody></table></td></tr><tr><td><b>我们为您的未来着想</b></td></tr><tr><td><ul><li>针对实际的客户需要</li><li>未来的发展战略</li><li>无线技术的发展</li><li>采用互联网协议，为新兴应用提供支持</li></ul></td></tr><tr><td><b>充分理解您发展的要求，根据您的需要量身定做</b></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td class="flag"> </td><td class="banner" width="100%"><h2>摩托罗拉系统解决方案</h2></td></tr></tbody></table></td></tr><tr><td><ul><li>Dimetra IP</li><li>紧凑型 TETRA</li></ul></td></tr></tbody></table><table cellspacing="0" cellpadding="0" width="100%" border="0"><tbody><tr><td class="FBFSSModule"><table class="PageSubHeader1" cellspacing="0" cellpadding="0" width="100%" summary="Layout table for Page Sub Header module." border="0"><tbody><tr class="bg"><td 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PN(BG7PSY) · 发表于 2007-8-23 16:42:00

SmartZone是很老的技术了，现在实行的是Motorola iDEN标准和TETRA系统...那是新一代的数字集群通信系统，北京的GA和JJ都已用上很久了，并且已有部分淘汰设备能在网上找到了(相当的昂贵，两三千元只能买到成色很差的淘汰设备，成色好的？五至八千...)，然而，这些设备，只有1瓦的Tx功率，对于蛤蟆(ham)和伪蛤蟆来说，不具备任何实际使用意义，而且是要入网的，本地的TETRA网建成了吗？？？[em07]强哥有空坐下喝杯茶吃个鲍或者找个MM推倒之，没事研究这个作啥？

揸刀的小强 · 发表于 2007-8-24 12:33:00

我是初哥,任何东西都要从低学啊!!![em08][em08]先进的就代表着钱,只要原理一样,很多都可以代用......

菲常人 · 发表于 2007-8-25 13:36:00

呵呵，迟的公司上800M的数字集群了，又可以玩玩啦。。。。。。。。[em04][em04][em04]

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