SS7<\/a> je v skuto\u010dnosti len uzavret\u00fd signaliza\u010dn\u00fd syst\u00e9m. Pou\u017e\u00edvaj\u00fa ho uzly (napr. susedsk\u00e1 \u00fastred\u0148a, MSC\/VLR, GMSC at\u010f.) v telekomunika\u010dnej sieti.<\/p>\nVo Ve\u013ekej Brit\u00e1nii je zn\u00e1my ako c 7 (CCITT # 7), \u010d\u00edslo 7 spolu s Common Channel Interoffice Signaling 7 (CCIS7).<\/p>\n
Protokol SS7 je dobre zn\u00e1my z celosvetov\u00e9ho pou\u017e\u00edvania tipov s\u00e9rie Q.700 z roku 1988 pod\u013ea itu t.<\/p>\n
Pracovn\u00e1 skupina pre internetov\u00e9 in\u017einierstvo (IETF) definovala bal\u00edk protokolov SIGTRAN, ktor\u00fd implementuje protokoly druhej, tretej a \u0161tvrtej \u00farovne harmonicky vyu\u017e\u00edvaj\u00face SS7. Niekedy sa naz\u00fdva aj Pseudo SS7, je zoraden\u00fd okolo transportn\u00e9ho mechanizmu SCTP (Stream Control Transmission Protocol), ktor\u00fd sa m\u00e1 pou\u017e\u00edva\u0165 v sie\u0165ach s internetov\u00fdm protokolom, ako je internet.<\/p>\n
<\/p>\n
Stru\u010dn\u00e1 hist\u00f3ria SS7<\/h2>\n
Od 60. rokov minul\u00e9ho storo\u010dia sa verejn\u00e9 komutovan\u00e9 telef\u00f3nne siete (PSTN) budovali pomocou anal\u00f3gov\u00fdch technol\u00f3gi\u00ed a viacer\u00fdch met\u00f3d signaliz\u00e1cie v p\u00e1sme. N\u00e1rast be\u017en\u00fdch koncov\u00fdch u\u017e\u00edvate\u013eov pevnej telef\u00f3nie a rast\u00faca po\u017eiadavka na progres\u00edvne slu\u017eby r\u00fdchlo sp\u00f4sobili, \u017ee star\u00e9 protokoly ako R1 CAS sa stali atrakt\u00edvnymi pre poskytovate\u013eov slu\u017eieb. Dokonca aj protokolov\u00e1 revol\u00facia ISDN sa uk\u00e1zala by\u0165 ve\u013ek\u00fdm krokom v telekomunika\u010dnom biznise, ktor\u00fd pre\u0161iel od signaliza\u010dn\u00e9ho protokolu v p\u00e1sme (s t\u00f3nmi, ukradnut\u00fdmi bitmi z hlasovej stanice alebo zameran\u00e9ho kan\u00e1la) k signaliz\u00e1cii mimo p\u00e1sma (oddelenej od hlasov\u00fdch kan\u00e1lov) s primit\u00edvmi zalo\u017een\u00fdmi na spr\u00e1vach, ktor\u00e9 s\u00fa ur\u010den\u00e9 pre digit\u00e1lny zvuk.<\/p>\n
Aj ke\u010f ISDN odstra\u0148ovalo mnoh\u00e9 probl\u00e9my star\u0161\u00edch protokolov, k jeho vlastnej masovej in\u0161tal\u00e1cii z hlavn\u00fdch syst\u00e9mov nikdy nedo\u0161lo, a tak dod\u00e1vatelia mali k dispoz\u00edcii komplikovan\u00fa hierarchiu vz\u00e1jomnej spolupr\u00e1ce zariaden\u00ed (alebo sa o \u0148u pok\u00fa\u0161ali). Aj ke\u010f ISDN poskytovalo jednoduch\u0161ie rie\u0161enie na poskytovanie doplnkov\u00fdch rie\u0161en\u00ed (t. j. podr\u017eanie hovoru, presmerovanie hovoru) koncov\u00fdm u\u017e\u00edvate\u013eom,\" ISDN sa postupne pres\u00favalo k hranici tohto syst\u00e9mu bli\u017e\u0161ie ku koncov\u00e9mu u\u017e\u00edvate\u013eovi. Okrem toho \u017eiadny poskytovate\u013e n\u00e1strojov skuto\u010dne neimplementoval \u0161pecifik\u00e1cie z\u00e1kladu ISDN, \u010d\u00edm vzniklo mno\u017estvo susedsk\u00fdch variantov a nev\u00fdhod pre syst\u00e9mov\u00fdch integr\u00e1torov.<\/p>\n
<\/p>\n
V tom \u010dase sa medzin\u00e1rodn\u00e9 konzorci\u00e1 za\u010dali s\u00fastre\u010fova\u0165 na pou\u017e\u00edvanie koordinovanej met\u00f3dy vytv\u00e1rania hovorov, na prezent\u00e1ciu mnoh\u00fdch slu\u017eieb (vr\u00e1tane t\u00fdch, ktor\u00e9 u\u017e boli podporovan\u00e9 protokolmi ISDN a star\u0161\u00edmi protokolmi), ako aj na mo\u017enos\u0165 vytv\u00e1ra\u0165 nov\u00fd softv\u00e9r (spolo\u010dnosti ) bez toho, aby bolo potrebn\u00e9 zlep\u0161ova\u0165 cel\u00fa sie\u0165ov\u00fa \u0161trukt\u00faru. SS7 (alebo Signaliza\u010dn\u00fd syst\u00e9m 7) potreboval roky na to, aby bol nasaden\u00fd po celej plan\u00e9te, ale teraz dosahuje to, \u010do bolo jeho cie\u013eom: poskytn\u00fa\u0165 v\u00e1m celkov\u00fd komunika\u010dn\u00fd \u0161tandard, ktor\u00fd pon\u00faka mnoho rie\u0161en\u00ed a m\u00e1 schopnos\u0165 kultivova\u0165 sa s po\u017eiadavkami verejnosti.<\/p>\n
Aj ke\u010f boli implementovan\u00e9 lok\u00e1lne verzie a do\u0161lo k mnoh\u00fdm zmen\u00e1m tohto protokolu, tento signaliza\u010dn\u00fd protokol je v s\u00fa\u010dasnosti s\u00fa\u010das\u0165ou v\u00e4\u010d\u0161iny v\u00fdznamn\u00fdch telef\u00f3nnych siet\u00ed na celom svete. Obsahoval aj vlastnos\u0165, ktor\u00e1 bola v\u00fdznamn\u00e1 pre ka\u017ed\u00fa komunitu na celom svete: odolnos\u0165 vo\u010di chyb\u00e1m a robustnos\u0165. SS7 sa rozvrstvuje do nieko\u013ek\u00fdch funk\u010dn\u00fdch skup\u00edn a bol vytvoren\u00fd tak, aby uzly v sieti nemuseli vykon\u00e1va\u0165 ka\u017ed\u00fa \u010das\u0165 z\u00e1sobn\u00edka protokolov, ak to naozaj nevy\u017eaduj\u00fa.<\/p>","protected":false},"excerpt":{"rendered":"
Signaliza\u010dn\u00fd syst\u00e9m \u010d. 7: SS7 - Signaliza\u010dn\u00fd syst\u00e9m # 7 - bol predt\u00fdm. Signaliz\u00e1cia a v\u00e4\u010d\u0161ina oper\u00e1ci\u00ed, ktor\u00e9 sa m\u00f4\u017eu pou\u017e\u00edva\u0165, bola zostaven\u00e1 za ve\u013ekej spolupr\u00e1ce oper\u00e1torov \/ \/ predajcov \/ \u0161tandardn\u00fdch organiz\u00e1ci\u00ed (CCITT, ETSI, itu t, at\u010f.) . SS7 je v skuto\u010dnosti len vlastne uzavret\u00e1 signaliz\u00e1cia...<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-454","post","type-post","status-publish","format-standard","hentry","category-ss7-sms"],"yoast_head":"\n
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