{"id":436,"date":"2024-03-11T16:34:09","date_gmt":"2024-03-11T13:34:09","guid":{"rendered":"https:\/\/sms-txt.net\/?p=436"},"modified":"2024-09-05T12:46:08","modified_gmt":"2024-09-05T09:46:08","slug":"trumpas-ss7-pristatymas-3","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/lt\/ss7-sms\/trumpas-ss7-pristatymas-3\/","title":{"rendered":"Trumpas SS7 pristatymas"},"content":{"rendered":"<h1>Signalizavimo sistema Nr. 7:<\/h1>\n<p><strong>SS7 - Signalizavimo sistema # 7 - buvo anks\u010diau. Signalizavimas ir dauguma operacij\u0173, kurias galima naudoti, buvo surinktas labai bendradarbiaujant operatoriams ir (arba) pardav\u0117jams ir (arba) standart\u0173 organizacijoms (CCITT, ETSI, itu t ir t. t.).<\/strong><\/p>\n<p><strong>SS7 i\u0161 tikr\u0173j\u0173 yra tik i\u0161jungta signalizavimo sistema. J\u0105 naudoja telekomunikacij\u0173 tinklo mazgai (pvz., kaimynin\u0117 stotis, MSC\/VLR, GMSC ir t. t.).<\/strong><br \/>\n<strong>Jungtin\u0117je Karalyst\u0117je jis \u017einomas kaip c 7 (CCITT # 7), numeris 7 kartu su Bendro kanalo tarpmiestinio signalizavimo 7 (CCIS7).<\/strong><\/p>\n<p>SS7 protokolas yra gerai \u017einomas d\u0117l visame pasaulyje naudojam\u0173 Q.700 serijos patarim\u0173 1988 m. itu t.<\/p>\n<p>Interneto in\u017einerijos darbo grup\u0117 (IETF) apibr\u0117\u017e\u0117 SIGTRAN protokol\u0173 paket\u0105, kuris \u012fgyvendina antrojo, tre\u010diojo ir ketvirtojo lygi\u0173 protokolus, suderintus naudojant SS7. Kartais dar vadinamas pseudo SS7, jis i\u0161rikiuotas aplink srauto valdymo perdavimo protokolo (SCTP) transportavimo mechanizm\u0105, skirt\u0105 naudoti interneto protokolo tinkluose, pvz.<\/p>\n<h2>Trumpa SS7 istorija<\/h2>\n<p>Nuo septintojo de\u0161imtme\u010dio vie\u0161ieji komutuojamieji telefono tinklai (PSTN) buvo kuriami naudojant analogines technologijas ir daugyb\u0119 signalizacijos metod\u0173. Did\u0117jant bendr\u0173j\u0173 fiksuotosios telefonijos galutini\u0173 vartotoj\u0173 skai\u010diui ir did\u0117jant pa\u017eangi\u0173 paslaug\u0173 reikalavimams, paslaug\u0173 teik\u0117jams greitai tapo patraukl\u016bs senieji protokolai, pavyzd\u017eiui, R1 CAS. Netgi ISDN protokolo revoliucija pasirod\u0117 esanti didelis \u017eingsnis telekomunikacij\u0173 versle, kai buvo pereita nuo vidinio signalizavimo protokolo (su tonais, pavogtais bitais i\u0161 balso stoties arba sutelkto kanalo) prie i\u0161orinio signalizavimo (atskirto nuo balso kanal\u0173) su prane\u0161imais pagr\u012fstais primityvais, pritaikytais skaitmeniniam garsui.<\/p>\n<p>Net jei ISDN i\u0161tais\u0117 daugel\u012f senesni\u0173 protokol\u0173 problem\u0173, jo masinis diegimas i\u0161 pagrindini\u0173 sistem\u0173 taip ir ne\u012fvyko, tod\u0117l tiek\u0117jams liko sud\u0117tinga \u012frangos tarpusavio s\u0105veikos hierarchija (arba bandymas j\u0105 sukurti). Nors ISDN suteik\u0117 lengvesn\u012f sprendim\u0105 galutiniams vartotojams teikti papildomus sprendimus (t. y. skambu\u010dio sulaikym\u0105, skambu\u010dio perdavim\u0105)\", ISDN palaipsniui migravo link \u0161ios sistemos ribos ar\u010diau galutinio vartotojo. Be to, n\u0117 vienas \u012franki\u0173 teik\u0117jas i\u0161 tikr\u0173j\u0173 ne\u012fgyvendino ISDN pagrind\u0173 specifikacij\u0173, tod\u0117l sistemos integratoriams atsirado daugyb\u0117 kaimynini\u0173 variant\u0173 ir tr\u016bkum\u0173.<\/p>\n<p>Tuo metu tarptautiniai konsorciumai \u0117m\u0117 orientuotis \u012f koordinuot\u0105 skambu\u010di\u0173 sudarymo metod\u0105, kad gal\u0117t\u0173 teikti daug paslaug\u0173 (\u012fskaitant tas, kurios jau buvo palaikomos ISDN ir senesniais protokolais), taip pat kad b\u016bt\u0173 galima kurti nauj\u0105 programin\u0119 \u012frang\u0105 (\u012fmones), netobulinant visos tinklo strukt\u016bros. SS7 (arba Signalizavimo sistema 7) buvo prad\u0117ta diegti visoje planetoje, ta\u010diau dabar ji pasiekia tai, kam buvo sukurta: pateikia bendr\u0105 komunikacijos standart\u0105, si\u016blant\u012f daugyb\u0119 sprendim\u0173 ir galint\u012f atitikti visuomen\u0117s poreikius.<\/p>\n<p>Net ir tada, kai buvo \u012fdiegtos vietin\u0117s \u0161io protokolo versijos ir padaryta daugyb\u0117 pakeitim\u0173, \u0161is signalizacijos protokolas dabar yra sujungtas su svarbiausiais telefono tinklais visame pasaulyje. Jame taip pat buvo \u012fdiegta savyb\u0117, svarbi kiekvienai bendruomenei visame pasaulyje: atsparumas gedimams ir tvirtumas. SS7 buvo sukurtas taip, kad tinklo mazgams nereik\u0117t\u0173 vykdyti kiekvienos protokolo steko dalies, jei jie to tikrai nereikalauja.<\/p>","protected":false},"excerpt":{"rendered":"<p>Signalizavimo sistema Nr. 7: SS7 - Signalizavimo sistema # 7 - buvo anks\u010diau. Signalizavimo sistema ir dauguma operacij\u0173, kurias galima naudoti, buvo surinkta labai bendradarbiaujant operatoriams ir (arba) pardav\u0117jams ir (arba) standart\u0173 organizacijoms (CCITT, ETSI, itu t ir kt.). SS7 i\u0161 tikr\u0173j\u0173 yra tik fakti\u0161kai u\u017edaryta signalizacija...<\/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-436","post","type-post","status-publish","format-standard","hentry","category-ss7-sms"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v26.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A brief introduction of SS7<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sms-txt.net\/lt\/ss7-sms\/trumpas-ss7-pristatymas-3\/\" \/>\n<meta property=\"og:locale\" content=\"lt_LT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A brief introduction of SS7\" \/>\n<meta property=\"og:description\" content=\"Signaling System No. 7: SS7 &#8211; Signalling System # 7 &#8211; has been formerly. The signalling and most of the surgeries which can be used was assembled with a great deal of cooperation from Operators \/ \/ Vendors \/ Standard organisations (CCITT, ETSI, itu t, etc..) . 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