【正文】 restart, all the calls back to normal. Example 2: A user plained about the base station near the Fu Lin difficult to call mobile phones, call their plaints filtering time, found a large number of CFC = 27 (MSC refused access) call code, after filtering processing, found that the whole call is this user, analyze the reasons should be singleuser problem. After further understanding of the UIM card users have their own fault. The other hand, filtering through the phone records, you can know a realtime telephone calls recently the timing, location and call the object, and the GSM system in the two hours after the call to e through a single billing if the call time and call to find the location. 2. System alarm function In this function, I think it has some advantages and disadvantages. It has three alarm browsing: (1) larm Manger: Open the window to see realtime system so far has not yet been cleared alarm, and at the same time upload new alarm generated. Since the window is a bartype alarm, such as EXCEL, like form, with the new alarm constantly refresh quickly upload, it gives the feeling dazzled. (2) Alarm Browser: Open the window can be observed that the 1 second before the system memory is not clear in all of the warning, the new warning not to upload, will not be updated in real time. (3) Historical Alarm: can query the system has been cleared manually or automatically after the failure to eliminate the alarm. Can learn about the history of alarms for a certain period of time all the faults, but regret that there is no record of a single failure for the start and end time, only inquiries to the fault location and the cause of the malfunction, to the maintenance of inconvenience. If the carrier module BBX121 OOS (Out Of Service) or clock module CSM432 OOS as well as BTS23 OOS, to know that a fault occurred at a time, can only be generated by earlier failures to understand the whole time to speculate, and then to the middle together. For example, one base station BTS417 Changle serious hardware failure BTS OOS the whole situation, was preoccupied with the question of duty, do not record the specific time points, the problem is resolved automatically clear the alert, on duty only know the specific time used by the traveler. After the concrete was not found time to stop, according to memories of duty, the general time period in between 14:20 to 15:00, enter this period of time, in many alarm found the BTS417 of the alarm that is In this period of time that occurred, and then 14:30 to 14:50 from the time period and found that this time also ... ... and so on, until the importation of 14:37 to 14:38 time period before the exact failures occurred at a time. Clearly, the alarm function is not plete, and makes this a very tedious work. The above can work in the OMCR through mandline approach to inquiry in this way has been found to immediately withdraw from the service, the base station does not work or equipment modules, but can not show alarm in general is not conducive to timely detection equipment hidden. 3. The performance of the quality of statistics The performance of the quality of statistics is an important function of the system is to carry out the technical management, quality management. Performance statistics can be an intuitive understanding of the network operation of the system quality of service monitoring and evaluation, system testing, troubleshooting, optimization and planning play an important role, but also to optimize network resources and an important basis for the adjustment. GSM network management system developed in this respect more successful, according to statistics of the level can be divided into CELL (cell), BTS (base station), BSS (base station controller master), PLMN (the whole network) four。 and the author used in the current CDMA network management system performance statistics are only statistical period, a user channel occupied by the business operations of the base station only Walsh code channel allocation. Uni users in the current volume are not many, some in rural areas or suburban development has not yet subscribers, users will rarely have the business channel, resulting in good business channel is lower than 60% deviation from the actual situation. In addition by the hour in which the system performance data to retain only 24 hours, which far from enough to meet the needs of statistics. The other is no longer listed. Motorola has been aware of its flawed performance statistics, the ongoing new round of research and development, to collect user information, according to the user39。中國(guó)聯(lián)通福州分公司GSM和CDMA兩個(gè)網(wǎng)絡(luò)使用的都是摩托羅拉公司開(kāi)發(fā)的網(wǎng)管系統(tǒng)，摩托羅拉設(shè)備無(wú)論是在GSM還是CDMA網(wǎng)絡(luò)方面，在中國(guó)通信行業(yè)都占了相當(dāng)?shù)姆蓊~，其開(kāi)發(fā)的網(wǎng)管系統(tǒng)具有一定的代表性。 Maintenance Center，系統(tǒng)運(yùn)行和維護(hù)中心），包含交換的OMCS（Switch交換）和無(wú)線的OMCR（Radio，無(wú)線）兩部分，主要進(jìn)行CDMA網(wǎng)絡(luò)的管理和監(jiān)控。Motorola OMCR應(yīng)用系統(tǒng)是基于UNIX System開(kāi)發(fā)的，通過(guò)LAN、Remote WAN連接到CBSC（基站主控制器）。 historical alarms 查看歷史告警； your own alarm filters 根據(jù)用戶要求，設(shè)置告警； your entire system either geographically or locally 基站之間相對(duì)的地理位置顯示； system performance threshold 設(shè)置系統(tǒng)性能門(mén)限； performance report 創(chuàng)建并產(chǎn)生性能報(bào)告。將cdllog進(jìn)行過(guò)濾，可以把某一時(shí)段或某一基站的通話過(guò)濾出來(lái)，分析查找異常通話的CFC代碼，對(duì)及時(shí)處理用戶投訴很有幫助?，F(xiàn)舉兩個(gè)實(shí)例以說(shuō)明：實(shí)例1：4月26日上午，在新天地上班的聯(lián)通員工發(fā)現(xiàn)CDMA手機(jī)不能正常呼叫，呼不入，打不出，用的是新天地微蜂窩基站的信號(hào)。經(jīng)過(guò)進(jìn)一步了解，是用戶的UIM卡本身有故障。由于告警窗口是橫條式，像EXCEL表格一樣，隨著新的告警上傳快速地不斷刷新，給人眼花繚亂的感覺(jué)。如載波模塊BBX121 OOS（Out Of Service）或時(shí)鐘模塊CSM432 OOS以及BTS23 OOS，要想知道某項(xiàng)故障發(fā)生的時(shí)間，只能在先了解故障產(chǎn)生的大體時(shí)間內(nèi)進(jìn)行推測(cè)，然后向中間湊。上述工作可以在OMCR中通過(guò)命令行的方式進(jìn)行查詢，用這種方式能馬上查出已退出服務(wù)、不能正常工作的基站或設(shè)備模塊，但是一般的告警不能顯示，不利于及時(shí)發(fā)現(xiàn)設(shè)備隱患。終端用戶可以根據(jù)自己的需要設(shè)置統(tǒng)計(jì)項(xiàng)，得到所需的統(tǒng)計(jì)數(shù)據(jù)，如Drop_Call_Rate(系統(tǒng)掉話率)、Handover_Success_Rate(小區(qū)切換成功率)等；還可選擇部分較為重要、每天都要觀察的參數(shù)，設(shè)置為定時(shí)自動(dòng)生成，要看時(shí)只要打開(kāi)所在目錄即可，自由可選性很高。如業(yè)務(wù)信道的完好率，按系統(tǒng)思路是所有可用的業(yè)務(wù)信道除以設(shè)計(jì)值的業(yè)務(wù)信道數(shù)量，一般該值都在99%以上；而目前筆者所用的CDMA網(wǎng)管系統(tǒng)的性能統(tǒng)計(jì)卻是只有在統(tǒng)計(jì)時(shí)段內(nèi)，有用戶占用業(yè)務(wù)信道的基站才對(duì)業(yè)務(wù)信道分配沃爾什碼。摩托羅拉公司已經(jīng)意識(shí)到其性能統(tǒng)計(jì)方面存在缺陷，目前正在進(jìn)行新一輪的研發(fā)，收集用戶信息，按用戶的需求進(jìn)行開(kāi)發(fā)。我們需要深入了解網(wǎng)管系統(tǒng)的性能，不斷探討和熟悉其應(yīng)用，更好地為網(wǎng)絡(luò)維護(hù)和網(wǎng)絡(luò)優(yōu)化服務(wù)