【正文】 路功能主要是規(guī)定了為在兩個(gè)直接連接的信令點(diǎn)之間傳送信令消息提供可靠的信令鏈路所需要的功能。 MTP2層簡(jiǎn)單的說(shuō)它為上層用戶提供了一個(gè)可靠的邏輯通道，它對(duì)信令消息的 內(nèi)容不作任何處理，只是在消息碼流中插入定位定界符和差錯(cuò)校驗(yàn)位。但該條公路還沒(méi)有標(biāo)明去向。 MTP3 層在 MTP2 層的基礎(chǔ)上實(shí)現(xiàn)了信令網(wǎng)絡(luò)級(jí)別的功能，即具有路由尋址的功能。 信令網(wǎng)絡(luò)管理主要可以分為：信令業(yè)務(wù)管理、信令路由管理、信令鏈路管理。 4） . SCCP 信令連接控制層：和 MTP3 層一起對(duì)應(yīng)于 OSI 模型中的網(wǎng)絡(luò)層。打電話的接續(xù)，斷開(kāi)，撥號(hào)音，回鈴音，話路的監(jiān)控，都是信令控制下的結(jié)果。信令系統(tǒng)是通信網(wǎng)的重要組成部分，它是用戶以及通信網(wǎng)中各個(gè)節(jié)點(diǎn)相互交換信息的共同語(yǔ)言 。 信令系統(tǒng)采用高速數(shù)據(jù)鏈路（ 64kbit/s）傳送信令，信令鏈路是信令點(diǎn)之間傳送信令信息的雙向通路，由數(shù)據(jù)鏈路與 數(shù)據(jù)鏈路兩端的終端電路完成 信令系統(tǒng)功能結(jié)構(gòu)中的第二級(jí)的功能。 信令集中操作與網(wǎng)管系統(tǒng) 我國(guó) 目前采用兩級(jí) 信令網(wǎng)管理結(jié)構(gòu) ,第一級(jí)為全國(guó) 信令網(wǎng)管理中心 ,設(shè)在電總網(wǎng)管中心，負(fù)責(zé)管理由 HSTP 和 C C2 組成的一級(jí)干線 信令網(wǎng)。 C C2長(zhǎng)途局通過(guò) 信令鏈路與 NSC 相連，系 統(tǒng)主要完成：對(duì) 信令網(wǎng)網(wǎng)絡(luò)結(jié)構(gòu)圖形顯示；對(duì) 信令網(wǎng)的配置進(jìn)行產(chǎn)生和修改操作；對(duì) 信令網(wǎng)的故障產(chǎn)生事件報(bào)告和相應(yīng)的告警；對(duì) 信令網(wǎng)的性能數(shù)據(jù)進(jìn)行統(tǒng)計(jì)并能讀取網(wǎng)絡(luò)的狀態(tài)數(shù)據(jù)和確定網(wǎng)絡(luò)的性能，如業(yè)務(wù)數(shù)據(jù)的采集、話務(wù)和負(fù)荷的確定、業(yè)務(wù)量報(bào)告； NSC 的維護(hù)管理； 0MAP 的 MRVT 測(cè)試。采用分層結(jié)構(gòu)的設(shè)計(jì)使系統(tǒng)可以在各層單獨(dú)擴(kuò)容而不影響其它層次的工作。 現(xiàn)有管理系統(tǒng)存在的主要問(wèn)題與相互關(guān)系 利用 信令集中操作與網(wǎng)管系統(tǒng)，我們能夠完成對(duì) 信令網(wǎng)絡(luò)故障告警管理、性能管理及配置管理，并可實(shí)現(xiàn)集中操作維護(hù)。但由于該系統(tǒng)只是從信令鏈路上實(shí)時(shí)提取消息，實(shí)現(xiàn)實(shí)時(shí)地對(duì) 信令網(wǎng)的分析與管理，因此，系統(tǒng)的最大不足是無(wú)法在發(fā)現(xiàn)問(wèn)題時(shí)由系統(tǒng)對(duì)信令網(wǎng)進(jìn)行控制操作。 硬件配置 我國(guó)引進(jìn)的 S1240 程控交換機(jī)較早使用了 信令系統(tǒng)。 EWSD 程控交換機(jī)中實(shí)現(xiàn) 信令功能涉及到 DLU、 LTG、 SN、 MB、 CCNC 等功能單元，公共信道模塊 (CCNC)連至交換網(wǎng) (SN)上，信令鏈路占用的是 DLU 的 1個(gè) PORT。生成 信令局向 數(shù)據(jù)與一般的隨路信令局向不同，要分成 MTP 和 TUP 兩個(gè)部分來(lái)考慮。它可以用作 ATM 網(wǎng)絡(luò)和 BISDN 網(wǎng)絡(luò)的內(nèi)部信令?，F(xiàn)代化電信網(wǎng)需要先進(jìn)技術(shù)支撐和自動(dòng)化管理手段， 信令網(wǎng)是電信網(wǎng)提供高質(zhì)量高可靠性高效益的電信服務(wù)的重要保證之一，是發(fā)展綜合業(yè)務(wù)智能業(yè)務(wù)以及其它各種新業(yè)務(wù)的必備條件，因此對(duì) 信令網(wǎng)維護(hù)和管理對(duì) 信令網(wǎng)的正常運(yùn)行至關(guān)重要。s number one signaling (signaling) with road and NO. 7 signaling signaling (road). And the munication work in our country mainly USES in the NO. 7 signalling. NO. 7 signaling is the foundation of the whole munication work, I can use such a metaphor to express NO. 7 signalling role, if the will of the entire munication work hardware to a human skeleton, then NO. 7 signalling is flowing in the blood in the body. Therefore, NO. 7 signaling is throughout the munication work, it is in order to plete the call in a munication language. NO. 7 signalling we also can say is to acplish a certain business operation interaction and some instruction or mand. NO. 7 signalling have four kinds of classification: according to the deferent direction points can be divided into to signal before and after the signal。 Signaling refers to the total road transport signaling link and the words of road on the same link. China39。 Signaling is easy to management and maintenance。 2. The signaling links. (LinkSet) : a collection of attributes have the same link, also can say as a bureau to the set of all links. The same signaling links all links of concentration is where the load sharing. The direct link between the two signaling set only one。 In general, each point is the signaling point for both in the signalling work and for the purpose of signaling point。s NO. 7 signalling work structure, its structure is more clear, can use words to describe the entire work structure: China39。 TDM and ATM need clocks, and IP does not need the clock。s NO. 7 signalling work structure, its structure is more clear, can use words to describe the entire work structure: China39。 TDM and ATM need clocks, and IP does not need the clock。s ability to provide work address forwarding. Above are some basic knowledge about the ss7, mobile munication technology is not only to the correct application of these technologies, and later maintenance and management, etc., ss7 can also provide help in this regard, mainly according to the system, the manmachine mands and MPTMON mand shows the query NO. 7 signalling system status, locate the fault quickly, then excluded, as to the content of the maintenance in the not much said. Conclusion: ss7 applications are very broad, it is because of its fast transmission, large capacity, and support the business expansion, these characteristics on the one hand, meet the demand of the current society, at the same time, the future development of munication technology is also to the expansion of business, these needs NO. 7 signalling can meet the basic, so widely used. A call connection, disconnect, dial tone, tone, road monitoring, are signaling under the control of the results. A nutshell, signaling, the nerve center of munication, status is very important. The definition of NO. 7 signalling system NO. 7 signalling is a kind of bureau signaling between digital total road. In NO. 7 signalling system, the signal information can be associated with a group of circuits of signal information or other information for work management, therefore, NO. 7 signalling system is essentially used to transfer information between each processor in the telemunication work data munication system for special purpose, and NO. 7 signalling work as a munication work of supporting work also can be regarded as a relatively independent data munications work. Signaling system is an important part of munication work, it is the user and the munication work in various nodes exchange information of the mon language. Signaling according to its work area is divided into user signaling and interoffice signaling. User signaling is signaling between the user and switches, interoffice signaling is signaling between the switches, interoffice signaling according to the transmission methods can be divided into signaling and road signaling. The advantages of NO. 7 signalling system The advantages of NO. 7 signalling system NO. 7 signalling system is most suitable for posed of digital programcontrolled switches and digital transmission equipment integrated digital work, and can meet the present and the future transmission call control, remote control, maintenance and management signaling and transaction information between processor39。 For No. 7 signalling work configuration for production and modification operations。 0 MRVT test of the map. Secondary to the provincial capital and municipality directly under the central government: No. 7 signalling work management center is located in the provincial bureau of the work management center, responsible for managing in this province (munici