{"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":"architecture-du-reseau-central-ss7","status":"publish","type":"post","link":"https:\/\/sms-txt.net\/fr\/ss7-sms\/architecture-du-reseau-central-ss7\/","title":{"rendered":"Architecture du r\u00e9seau central SS7"},"content":{"rendered":"<h1>SS7 SMS CALL LOCATION<\/h1>\n<p>Le r\u00e9seau central GSM (CN) (ou Network Switching Subsystem NSS) est le composant du syst\u00e8me GSM qui assure la commutation des appels et la gestion de la mobilit\u00e9 pour les t\u00e9l\u00e9phones mobiles. Le CN se compose des \u00e9l\u00e9ments suivants<\/p>\n<p><strong>Le centre de commutation des services mobiles (MSC)<\/strong>Il constitue l'interface entre le syst\u00e8me radio et le r\u00e9seau fixe. Il ex\u00e9cute toutes les fonctions n\u00e9cessaires pour g\u00e9rer les services \u00e0 commutation de circuits \u00e0 destination et en provenance des stations mobiles (3GPP, 2015, p26). Le MSC se compose g\u00e9n\u00e9ralement de deux syst\u00e8mes : le serveur MSC, responsable de la signalisation, et la passerelle m\u00e9dia (MGW) qui g\u00e8re le trafic utilisateur.<\/p>\n<p><strong>Le Home Subscriber Server (HSS)<\/strong> est la base de donn\u00e9es principale pour un utilisateur donn\u00e9. C'est l'entit\u00e9 qui contient les informations relatives \u00e0 l'abonnement pour soutenir les entit\u00e9s de r\u00e9seau qui traitent effectivement les appels\/sessions (3GPP, 2015, p. 22). Le HSS contient : les informations d'identification, de num\u00e9rotation et d'adressage de l'utilisateur, les informations de s\u00e9curit\u00e9 de l'utilisateur, les informations de localisation de l'utilisateur et les informations relatives au profil de l'utilisateur. La fonction HSS est assur\u00e9e par deux composants du r\u00e9seau : Le Home Location Register (HLR) et le Centre d'authentification (AuC).<\/p>\n<p><strong>Le registre de localisation des foyers (HLR)<\/strong> est une base de donn\u00e9es centrale qui contient les d\u00e9tails de chaque abonn\u00e9 \u00e0 un t\u00e9l\u00e9phone mobile autoris\u00e9 \u00e0 utiliser le r\u00e9seau central GSM. Chaque utilisateur ne peut \u00eatre associ\u00e9 qu'\u00e0 un seul HLR.<\/p>\n<p><strong>Le centre d'authentification (AuC)<\/strong> est associ\u00e9 \u00e0 un HLR donn\u00e9 et stocke une cl\u00e9 d'identit\u00e9 pour chaque abonn\u00e9 enregistr\u00e9 aupr\u00e8s du HLR associ\u00e9. La cl\u00e9 est utilis\u00e9e pour g\u00e9n\u00e9rer des donn\u00e9es de s\u00e9curit\u00e9 qui sont ensuite utilis\u00e9es pour l'authentification mutuelle entre l'abonn\u00e9 et le r\u00e9seau, pour prot\u00e9ger l'int\u00e9grit\u00e9 et la confidentialit\u00e9 des communications (3GPP, 2015, p23).<\/p>\n<p><strong>Le registre des emplacements des visiteurs (VLR)<\/strong> est une base de donn\u00e9es des abonn\u00e9s qui se sont d\u00e9plac\u00e9s dans la juridiction du MSC qu'elle dessert. Lorsqu'une station mobile (MS) entre dans une nouvelle zone de localisation, elle entame une proc\u00e9dure d'enregistrement. Un MSC responsable de cette zone prend connaissance de cet enregistrement et transf\u00e8re \u00e0 un registre des emplacements des visiteurs l'identit\u00e9 de la zone d'emplacement o\u00f9 se trouve la station mobile (MS). Si cette MS n'est pas encore enregistr\u00e9e dans le VLR, le VLR et le HLR \u00e9changent des informations pour permettre le traitement correct des appels CS impliquant la MS. Dans la pratique, pour des raisons de performance, la plupart des fournisseurs int\u00e8grent le VLR directement au V-MSC (3GPP, 2015, p25).<\/p>\n<p><strong>La passerelle de service de messages courts (SMSC)<\/strong> sert d'interface entre un centre de service de messages courts et le r\u00e9seau mobile, pour permettre la d\u00e9livrance de messages courts aux stations mobiles \u00e0 partir du centre de service (3GPP, 2015, p26).<\/p>\n<p><strong>Le point de transfert de signalisation (STP)<\/strong> est responsable du transfert des messages SS7 entre les autres n\u0153uds SS7, agissant un peu comme un routeur dans un r\u00e9seau IP (Dryburgh, Hewet, 2005).<\/p>","protected":false},"excerpt":{"rendered":"<p>SS7 SMS CALL LOCATION Le r\u00e9seau central GSM (CN) (ou Network Switching Subsystem NSS) est le composant du syst\u00e8me GSM qui assure la commutation des appels et la gestion de la mobilit\u00e9 des t\u00e9l\u00e9phones mobiles. Le CN se compose des \u00e9l\u00e9ments suivants Le centre de commutation des services mobiles (MSC) : il constitue l'interface entre le syst\u00e8me radio et le r\u00e9seau fixe....<\/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\/fr\/ss7-sms\/architecture-du-reseau-central-ss7\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\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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