{"id":886,"date":"2022-05-24T09:15:35","date_gmt":"2022-05-24T07:15:35","guid":{"rendered":"https:\/\/blog.beevoip.it\/?p=886"},"modified":"2022-06-27T09:28:48","modified_gmt":"2022-06-27T07:28:48","slug":"protocollo-sip-il-metodo-register","status":"publish","type":"post","link":"https:\/\/www.beevoip.it\/blog\/protocollo-sip-il-metodo-register\/","title":{"rendered":"SIP: il metodo REGISTER"},"content":{"rendered":"\n

A cosa serve il metodo REGISTER<\/h3>\n\n\n\n

Negli scorsi articoli abbiamo studiato come viene instaurata una chiamata tra due apparati SIP, e come essa viene terminata.
Prima di poter chiamare, per\u00f2, c\u2019\u00e8 bisogno che l\u2019apparato SIP si registri al cosiddetto Registrar Server.<\/p>\n\n\n\n

Il metodo REGISTER serve per l\u2019appunto a permettere ad un telefono di registrarsi sul Proxy dal quale effettuer\u00e0 e ricever\u00e0 le chiamate. <\/p>\n\n\n\n

Nella maggior parte dei casi, il Registrar Server richiede un\u2019autenticazione, la quale viene fornita dal Client SIP che tenta di registrarsi, tramite il metodo REGISTER<\/p>\n\n\n\n

Nel flusso che segue, notiamo che il client SIP con IP 185.xx.yy.108 tenta di registrarsi sul server con IP 137.xx.yy.127.<\/p>\n\n\n\n

Notiamo anche che effettua due tentativi di registrazione: il primo riceve risposta non autorizzato, mentre il secondo va a buon fine.<\/p>\n\n\n\n

\"Analisi
Flusso SIP metodo REGISTER<\/figcaption><\/figure><\/div>\n\n\n\n

Com’\u00e8 composto?<\/h3>\n\n\n\n
\"Pacchetto
Pacchetto 1\u00b0 REGISTER non autorizzato<\/figcaption><\/figure><\/div>\n\n\n\n
\"Pacchetto
Pacchetto 2\u00b0 REGISTER autorizzato<\/figcaption><\/figure><\/div>\n\n\n\n

Anche qui, troviamo i soliti campi Via, Contact, Max-Forwards, To, From, Call-ID, CSeq e Content-Lenght (che trovi gi\u00e0 spiegati qui<\/a>). <\/p>\n\n\n\n

Analizzando le due richieste di registrazione, vediamo subito che nella prima manca il campo \u201cAuthorization\u201d, campo fondamentale in quanto contiene username e password dell\u2019interno che si vuole registrare.<\/p>\n\n\n\n

Per maggiori informazioni, puoi consultare la documentazione ufficiale RFC3261<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

A cosa serve il metodo REGISTER Negli scorsi articoli abbiamo studiato come viene instaurata una chiamata tra due apparati SIP, e come essa viene terminata.Prima di poter chiamare, per\u00f2, c\u2019\u00e8 bisogno che l\u2019apparato SIP si registri al cosiddetto Registrar Server. Il metodo REGISTER serve per l\u2019appunto a permettere ad un telefono di registrarsi sul Proxy […]<\/p>\n","protected":false},"author":4,"featured_media":896,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7],"tags":[27],"class_list":{"0":"post-886","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-voip","8":"tag-metodi-sip"},"yoast_head":"\nSIP: il metodo REGISTER - Blog Beevoip<\/title>\n<meta name=\"description\" content=\"Il metodo REGISTER serve per l\u2019appunto a permettere ad un telefono di registrarsi sul Proxy dal quale effettuer\u00e0 e ricever\u00e0 le chiamate.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.beevoip.it\/blog\/protocollo-sip-il-metodo-register\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SIP: il metodo REGISTER - 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