{"id":352,"date":"2023-11-28T04:46:53","date_gmt":"2023-11-28T01:46:53","guid":{"rendered":"https:\/\/sms-txt.net\/?p=352"},"modified":"2024-09-05T12:44:20","modified_gmt":"2024-09-05T09:44:20","slug":"arquitetura-de-rede-principal-ss7","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/pt\/ss7-sms\/arquitetura-de-rede-principal-ss7\/","title":{"rendered":"Arquitetura da rede principal SS7"},"content":{"rendered":"<h1>LOCALIZA\u00c7\u00c3O DA CHAMADA SS7 SMS<\/h1>\n<p>A rede central GSM (CN) (ou Subsistema de Comuta\u00e7\u00e3o de Rede NSS) \u00e9 o componente do sistema GSM que realiza a comuta\u00e7\u00e3o de chamadas e o gerenciamento de mobilidade para telefones celulares. A CN consiste nos seguintes componentes<\/p>\n<p><strong>Centro de comuta\u00e7\u00e3o de servi\u00e7os m\u00f3veis (MSC)<\/strong>O sistema de r\u00e1dio: constitui a interface entre o sistema de r\u00e1dio e a rede fixa. Ele executa todas as fun\u00e7\u00f5es necess\u00e1rias para lidar com os servi\u00e7os de circuito comutado de e para as esta\u00e7\u00f5es m\u00f3veis (3GPP, 2015, p26). O MSC geralmente consiste em dois sistemas: o servidor MSC, respons\u00e1vel pela sinaliza\u00e7\u00e3o, e o gateway de m\u00eddia (MGW), que lida com o tr\u00e1fego do usu\u00e1rio.<\/p>\n<p><strong>O servidor de assinante dom\u00e9stico (HSS)<\/strong> \u00e9 o banco de dados principal de um determinado usu\u00e1rio. \u00c9 a entidade que cont\u00e9m as informa\u00e7\u00f5es relacionadas \u00e0 assinatura para dar suporte \u00e0s entidades de rede que realmente lidam com chamadas\/sess\u00f5es (3GPP, 2015, p. 22). O HSS cont\u00e9m: identifica\u00e7\u00e3o do usu\u00e1rio, informa\u00e7\u00f5es de numera\u00e7\u00e3o e endere\u00e7amento, informa\u00e7\u00f5es de seguran\u00e7a do usu\u00e1rio, informa\u00e7\u00f5es de localiza\u00e7\u00e3o do usu\u00e1rio e informa\u00e7\u00f5es de perfil do usu\u00e1rio. A fun\u00e7\u00e3o do HSS \u00e9 executada por dois componentes de rede: O Home Location Register (HLR) e o Authentication Center (AuC)<\/p>\n<p><strong>O Registro de Localiza\u00e7\u00e3o Residencial (HLR)<\/strong> \u00e9 um banco de dados central que cont\u00e9m detalhes de cada assinante de telefone celular autorizado a usar a rede principal GSM. Cada usu\u00e1rio s\u00f3 pode ser associado a um \u00fanico HLR.<\/p>\n<p><strong>O centro de autentica\u00e7\u00e3o (AuC)<\/strong> est\u00e1 associado a um determinado HLR e armazena uma chave de identidade para cada assinante registrado no HLR associado. A chave \u00e9 usada para gerar dados de seguran\u00e7a que s\u00e3o usados posteriormente para autentica\u00e7\u00e3o m\u00fatua entre o assinante e a rede, protegendo a integridade e a confidencialidade das comunica\u00e7\u00f5es (3GPP, 2015, p23).<\/p>\n<p><strong>O Registro de Localiza\u00e7\u00e3o de Visitantes (VLR)<\/strong> \u00e9 um banco de dados dos assinantes que entraram em roaming na jurisdi\u00e7\u00e3o do MSC que ele atende. Quando uma esta\u00e7\u00e3o m\u00f3vel (MS) entra em uma nova \u00e1rea de localiza\u00e7\u00e3o, ela inicia um procedimento de registro. Um MSC respons\u00e1vel por essa \u00e1rea percebe esse registro e transfere para um Registro de Localiza\u00e7\u00e3o de Visitante a identidade da \u00e1rea de localiza\u00e7\u00e3o em que a esta\u00e7\u00e3o m\u00f3vel (MS) est\u00e1 situada. Se essa MS ainda n\u00e3o estiver registrada no VLR, o VLR e o HLR trocar\u00e3o informa\u00e7\u00f5es para permitir o tratamento adequado das chamadas CS envolvendo a MS. Na pr\u00e1tica, por motivos de desempenho, a maioria dos fornecedores integra o VLR diretamente ao V-MSC (3GPP, 2015, p. 25).<\/p>\n<p><strong>O gateway do servi\u00e7o de mensagens curtas (SMSC)<\/strong> atua como uma interface entre um Centro de Servi\u00e7os de Mensagens Curtas e a rede m\u00f3vel, para permitir que mensagens curtas sejam entregues \u00e0s esta\u00e7\u00f5es m\u00f3veis a partir do Centro de Servi\u00e7os (3GPP, 2015, p26).<\/p>\n<p><strong>O ponto de transfer\u00eancia de sinaliza\u00e7\u00e3o (STP)<\/strong> \u00e9 respons\u00e1vel pela transfer\u00eancia de mensagens SS7 entre outros n\u00f3s SS7, agindo de forma semelhante a um roteador em uma rede IP (Dryburgh, Hewet, 2005).<\/p>","protected":false},"excerpt":{"rendered":"<p>SS7 SMS CALL LOCATION A rede central (CN) GSM (ou Network Switching Subsystem NSS) \u00e9 o componente do sistema GSM que realiza a comuta\u00e7\u00e3o de chamadas e o gerenciamento de mobilidade para telefones celulares. A CN consiste nos seguintes componentes Centro de comuta\u00e7\u00e3o de servi\u00e7os m\u00f3veis (MSC): constitui a interface entre o sistema de r\u00e1dio e a rede fixa....<\/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-352","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>SS7 Core Network Architecture<\/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\/pt\/ss7-sms\/arquitetura-de-rede-principal-ss7\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SS7 Core Network Architecture\" \/>\n<meta property=\"og:description\" content=\"SS7 SMS CALL LOCATION The GSM Core network (CN) (or Network Switching Subsystem NSS) is the component of the GSM system that carries out call switching and mobility management for mobile phones. 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