{"id":1087,"date":"2021-07-12T17:47:00","date_gmt":"2021-07-12T15:47:00","guid":{"rendered":"https:\/\/www.musicotel.com\/blog\/?p=1087"},"modified":"2021-07-12T17:47:20","modified_gmt":"2021-07-12T15:47:20","slug":"du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip","status":"publish","type":"post","link":"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/","title":{"rendered":"Du PBX au Centrex en passant par le PABX et la ToIP : br\u00e8ve histoire des t\u00e9l\u00e9communications"},"content":{"rendered":"\n<p>Dans le domaine de la t\u00e9l\u00e9phonie d&rsquo;entreprise, les technologies ont \u00e9volu\u00e9 tr\u00e8s rapidement puisqu&rsquo;en 1876, A. Graham Bell invente le premier t\u00e9l\u00e9phone qui permettait d&rsquo;avoir une conversation \u00e0 distance avec une autre personne. Le syst\u00e8me \u00e9tait plut\u00f4t performant pour engager le dialogue entre client et entreprise, mais son co\u00fbt, li\u00e9 \u00e0 une interconnexion manuelle pour \u00e9tablir physiquement la ligne entre les deux personnes, \u00e9tait tr\u00e8s \u00e9lev\u00e9. Le PBX (Private Branch eXchange) a fait place au PABX (Private Automatic Branch eXchange) dans les ann\u00e9es 60 pour diminuer le co\u00fbt. <\/p>\n\n\n\n<p>Le PABX prenait la forme d&rsquo;un standard t\u00e9l\u00e9phonique, install\u00e9 dans chaque soci\u00e9t\u00e9, afin de g\u00e9rer les routages d&rsquo;appels tant internes que externes. En externes, les appels \u00e9taient pass\u00e9s au r\u00e9seau t\u00e9l\u00e9phonique commut\u00e9 g\u00e9r\u00e9 par l&rsquo;op\u00e9rateur historique avec des commutateurs qui se sont automatis\u00e9s. Les PABX n&rsquo;ont eu de cesse de s&rsquo;am\u00e9liorer avec de nombreuses fonctions qui ont \u00e9t\u00e9 ajout\u00e9s : pr\u00e9d\u00e9croch\u00e9, transfert d&rsquo;appel, bo\u00eete vocale \/ r\u00e9pondeur, serveur vocal interactif, etc. C&rsquo;est durant cette p\u00e9riode que les besoins en messages t\u00e9l\u00e9phoniques ont explos\u00e9 pour les entreprises. L&rsquo;objectif \u00e9tait clairement de soigner la qualit\u00e9 de l&rsquo;accueil en informant le plus t\u00f4t possible l&rsquo;appelant qu&rsquo;il est bien au bon endroit. Analogiques, les PABX se sont mis \u00e0 g\u00e9rer de plus en plus d&rsquo;\u00e9quipements num\u00e9riques, puis \u00e0 se num\u00e9riser eux-m\u00eames avant de c\u00e9der petit \u00e0 petit la place \u00e0 l&rsquo;IPBX (Internet Protocol Private Branch eXchange) dans les ann\u00e9es 90-2000&#8230; <\/p>\n\n\n\n<p>L&rsquo;IPBX utilise la technologie de voix sur IP (VoIP) qui permet la t\u00e9l\u00e9phonie sur IP (ToIP). Pour faire simple, la VoIP passe par le r\u00e9seau Internet pour acheminer les communications et les appels t\u00e9l\u00e9phoniques en num\u00e9risant la voix. En mutualisant ainsi les r\u00e9seaux de voix et de donn\u00e9es, les entreprises peuvent diminuer les co\u00fbts de t\u00e9l\u00e9communication de mani\u00e8re int\u00e9ressante. Les fonctionnalit\u00e9s de l&rsquo;IPBX sont assez similaires \u00e0 celles du PABX du point de vue des messages t\u00e9l\u00e9phoniques, si ce n&rsquo;est que l&rsquo;entreprise a plus d&rsquo;autonomie pour effectuer les modifications de ses messages. <\/p>\n\n\n\n<p>Dans les ann\u00e9es 2000-2010, la t\u00e9l\u00e9phonie sur IP est pass\u00e9e dans le cloud, en mode t\u00e9l\u00e9phonie h\u00e9berg\u00e9e avec le Centrex. C&rsquo;est la m\u00eame chose que l&rsquo;IPBX, mais simplement, plus aucun \u00e9quipement ne se situe physiquement dans l&rsquo;entreprise. Tout est dans le cloud et le mod\u00e8le \u00e9volue vers l&rsquo;abonnement au service en fonction du nombre de postes \u00e0 ouvrir (donc du nombre de collaborateurs dans l&rsquo;entreprise).<\/p>\n\n\n\n<p>La derni\u00e8re \u00e9tape de cette \u00e9volution est la fin du r\u00e9seau RTC (pour 2023), ce que doivent anticiper encore de nombreuses entreprises qui sont sur ses lignes analogiques. Par ailleurs, la communication unifi\u00e9e semble faire sa place en m\u00ealant tout aussi bien la visioconf\u00e9rence, la t\u00e9l\u00e9phonie, les messageries instantan\u00e9es, la softphonie, etc. Une sorte d&rsquo;omnicanalit\u00e9 technologique pour r\u00e9pondre encore plus vite et efficacement \u00e0 ses clients.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans le domaine de la t\u00e9l\u00e9phonie d&rsquo;entreprise, les technologies ont \u00e9volu\u00e9 tr\u00e8s rapidement puisqu&rsquo;en 1876, A. Graham Bell invente le<\/p>\n","protected":false},"author":2,"featured_media":1088,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[19,16,18],"tags":[48,52,46,49,47,50,51],"class_list":["post-1087","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-boite-vocale-messagerie-repondeur-attente-telephonique","category-relation-client","category-telephonie","tag-ipbx","tag-messages-telephoniques","tag-omnicanalite","tag-pabx","tag-softphonie","tag-toip","tag-voip"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Du PBX au Centrex en passant par le PABX et la ToIP : br\u00e8ve histoire des t\u00e9l\u00e9communications - Service client en actus par MusicoTel<\/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:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Du PBX au Centrex en passant par le PABX et la ToIP : br\u00e8ve histoire des t\u00e9l\u00e9communications - Service client en actus par MusicoTel\" \/>\n<meta property=\"og:description\" content=\"Dans le domaine de la t\u00e9l\u00e9phonie d&rsquo;entreprise, les technologies ont \u00e9volu\u00e9 tr\u00e8s rapidement puisqu&rsquo;en 1876, A. Graham Bell invente le\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\" \/>\n<meta property=\"og:site_name\" content=\"Service client en actus par MusicoTel\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-12T15:47:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-07-12T15:47:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.musicotel.com\/blog\/wp-content\/uploads\/2021\/07\/kirill-sh-eVWWr6nmDf8-unsplash.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1285\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alain Goudey\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alain Goudey\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\"},\"author\":{\"name\":\"Alain Goudey\",\"@id\":\"https:\/\/www.musicotel.com\/blog\/#\/schema\/person\/0ad83734a0e6a814ea64eccc3d2afd27\"},\"headline\":\"Du PBX au Centrex en passant par le PABX et la ToIP : br\u00e8ve histoire des t\u00e9l\u00e9communications\",\"datePublished\":\"2021-07-12T15:47:00+00:00\",\"dateModified\":\"2021-07-12T15:47:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\"},\"wordCount\":562,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.musicotel.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.musicotel.com\/blog\/wp-content\/uploads\/2021\/07\/kirill-sh-eVWWr6nmDf8-unsplash.jpg\",\"keywords\":[\"ipbx\",\"messages t\u00e9l\u00e9phoniques\",\"omnicanalit\u00e9\",\"pabx\",\"softphonie\",\"ToIP\",\"VoIP\"],\"articleSection\":[\"Bo\u00eete vocale, messagerie, r\u00e9pondeur, attente t\u00e9l\u00e9phonique\",\"relation client\",\"t\u00e9l\u00e9phonie\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\",\"url\":\"https:\/\/www.musicotel.com\/blog\/2021\/07\/12\/du-pbx-au-centrex-en-passant-par-le-pabx-et-la-toip\/\",\"name\":\"Du PBX au Centrex en passant par le PABX et la ToIP : br\u00e8ve histoire des t\u00e9l\u00e9communications - 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