{"id":17788519,"date":"2025-11-02T08:19:03","date_gmt":"2025-11-02T07:19:03","guid":{"rendered":"https:\/\/kapitalis.com\/tunisie\/?p=17788519"},"modified":"2025-11-02T08:19:04","modified_gmt":"2025-11-02T07:19:04","slug":"grace-a-medusa-bizerte-au-coeur-du-reseau-numerique-mediterraneen","status":"publish","type":"post","link":"https:\/\/kapitalis.com\/tunisie\/2025\/11\/02\/grace-a-medusa-bizerte-au-coeur-du-reseau-numerique-mediterraneen\/","title":{"rendered":"Gr\u00e2ce \u00e0 Medusa, Bizerte au c\u0153ur du r\u00e9seau num\u00e9rique m\u00e9diterran\u00e9en"},"content":{"rendered":"\n<p><strong><em>Un vaste serpent de fibres optiques s\u2019\u00e9tend peu \u00e0 peu sous la M\u00e9diterran\u00e9e. Baptis\u00e9 <strong>Medusa Submarine Cable System<\/strong>, ce projet d\u2019envergure internationale ambitionne de relier l\u2019Europe du Sud \u00e0 l\u2019Afrique du Nord gr\u00e2ce \u00e0 un c\u00e2ble sous-marin de plus de <strong>8 700 kilom\u00e8tres<\/strong><\/em><\/strong><em>.<strong> Parmi ses points d\u2019atterrissage strat\u00e9giques figure Bizerte<\/strong>,<strong> en Tunisie, la pointe la plus septentrionale de l\u2019Afrique, appel\u00e9e \u00e0 devenir un nouveau hub num\u00e9rique r\u00e9gional.<\/strong><\/em><\/p>\n\n\n\n<p><strong>Lotfi Sahli <\/strong><\/p>\n\n\n\n<!--more-->\n\n\n\n<p>Con\u00e7u pour renforcer la connectivit\u00e9 num\u00e9rique entre les continents, le c\u00e2ble Medusa vise \u00e0 r\u00e9duire la latence, augmenter la capacit\u00e9 de transmission et am\u00e9liorer la r\u00e9silience des r\u00e9seaux Internet entre huit pays : le Maroc, l\u2019Alg\u00e9rie, la Tunisie, la Libye, l\u2019\u00c9gypte, l\u2019Espagne, la France, l\u2019Italie, la Gr\u00e8ce et Chypre.<\/p>\n\n\n\n<p>La boucle, dite en architecture <em>\u00abring\u00bb<\/em>, garantit une redondance du trafic : en cas de rupture sur une branche, les donn\u00e9es peuvent \u00eatre redirig\u00e9es par l\u2019autre c\u00f4t\u00e9 du circuit, assurant une continuit\u00e9 de service essentielle aux op\u00e9rateurs et aux grandes plateformes num\u00e9riques.<\/p>\n\n\n\n<p>En Tunisie, le c\u00e2ble atterrira \u00e0 Bizerte. Ce choix, loin d\u2019\u00eatre anodin, place la ville sur la carte des grands \u00e9changes de donn\u00e9es m\u00e9diterran\u00e9ens. Pour Tunisie Telecom et Orange Tunisie, partenaires locaux du consortium, cette infrastructure repr\u00e9sente une opportunit\u00e9 majeure : accro\u00eetre la bande passante internationale, r\u00e9duire les co\u00fbts d\u2019acc\u00e8s et favoriser l\u2019\u00e9mergence d\u2019une \u00e9conomie num\u00e9rique comp\u00e9titive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Des chiffres impressionnants<\/strong><\/h2>\n\n\n\n<p>\u00c0 terme, le projet pourrait stimuler le d\u00e9veloppement du cloud computing, des centres de donn\u00e9es et des services technologiques \u00e0 forte valeur ajout\u00e9e, ouvrant la voie \u00e0 une transformation num\u00e9rique durable.<\/p>\n\n\n\n<p>Techniquement, Medusa s\u2019impose comme l\u2019un des c\u00e2bles les plus puissants de la r\u00e9gion. Sa capacit\u00e9 initiale d\u00e9passe 20 t\u00e9rabits par seconde (Tbps) par paire de fibres, avec un potentiel d\u2019\u00e9volution consid\u00e9rable. Il comprend 24 paires de fibres optiques, et int\u00e8gre des r\u00e9p\u00e9teurs optiques pour amplifier le signal sur de longues distances.<\/p>\n\n\n\n<p>Cette prouesse technologique est le fruit du savoir-faire du constructeur fran\u00e7ais Alcatel Submarine Networks (ASN), filiale du groupe Nokia, charg\u00e9 de la fabrication et de la pose du c\u00e2ble.<\/p>\n\n\n\n<p>Annonc\u00e9 il y a plusieurs ann\u00e9es, le projet est entr\u00e9 en phase de construction en 2023. Sa mise en service commerciale est pr\u00e9vue fin 2025. L\u2019investissement global avoisine 400 millions de dollars, financ\u00e9 par un consortium international regroupant op\u00e9rateurs t\u00e9l\u00e9coms et acteurs publics et priv\u00e9s des pays concern\u00e9s.<\/p>\n\n\n\n<p>Le trac\u00e9 desservira plusieurs grands ports de la M\u00e9diterran\u00e9e : Barcelone, Marseille, G\u00eanes, Alger, Tripoli, Alexandrie, Corfou, Yeroskipos (Chypre) et Nador, en plus du point tunisien.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"573\" src=\"https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-1024x573.jpg\" alt=\"\" class=\"wp-image-17788781\" style=\"width:800px\" srcset=\"https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-1024x573.jpg 1024w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-300x168.jpg 300w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-768x430.jpg 768w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-1536x859.jpg 1536w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-580x324.jpg 580w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-860x481.jpg 860w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa-1160x649.jpg 1160w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Medusa.jpg 1643w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>Am\u00e9liorer la r\u00e9silience des r\u00e9seaux Internet entre huit pays : le Maroc, l\u2019Alg\u00e9rie, la Tunisie, la Libye, l\u2019\u00c9gypte, l\u2019Espagne, la France, l\u2019Italie, la Gr\u00e8ce et Chypre.<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Un enjeu strat\u00e9gique pour la r\u00e9gion<\/strong><\/h2>\n\n\n\n<p>Au-del\u00e0 des aspects techniques, Medusa rev\u00eat une importance g\u00e9opolitique et \u00e9conomique majeure. Il diversifie les routes de donn\u00e9es, aujourd\u2019hui largement concentr\u00e9es autour de l\u2019\u00c9gypte et du Moyen-Orient, et r\u00e9duit la d\u00e9pendance r\u00e9gionale vis-\u00e0-vis de quelques corridors num\u00e9riques.<\/p>\n\n\n\n<p>Pour l\u2019Afrique du Nord, c\u2019est une \u00e9tape d\u00e9cisive dans la r\u00e9duction de la fracture num\u00e9rique et le renforcement de l\u2019int\u00e9gration \u00e9conomique avec l\u2019Europe. Pour l\u2019Europe du Sud, c\u2019est l\u2019assurance d\u2019un acc\u00e8s plus rapide et plus fiable aux march\u00e9s africains \u00e9mergents.<\/p>\n\n\n\n<p>En visite, samedi 1<sup>er<\/sup> novembre 2025, sur le chantier du c\u00e2ble sous-marin Medusa \u00e0 Bizerte, nous avons pu constater l\u2019avancement des travaux du c\u00f4t\u00e9 tunisien. Sur place, G\u00e9rard Estanyol, ing\u00e9nieur en g\u00e9nie civil originaire de Catalogne et responsable du segment c\u00f4tier du projet, a accept\u00e9 de partager plusieurs informations techniques sur cette phase cruciale.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Un chantier de haute pr\u00e9cision<\/strong><\/h2>\n\n\n\n<p>Le c\u00e2ble Medusa, qui reliera la Tunisie \u00e0 plusieurs pays du pourtour m\u00e9diterran\u00e9en, est en cours de pose sur la rive de Bizerte-El Alia. Selon M. Estanyol, le c\u00e2ble est aliment\u00e9 par une tension continue de 3 000 volts depuis la Cable Landing Station (CLS) de Bizerte. Cette alimentation \u00e9lectrique sert \u00e0 activer les amplificateurs optiques install\u00e9s \u00e0 intervalles r\u00e9guliers de 80 kilom\u00e8tres, essentiels pour maintenir la puissance du signal sur l\u2019ensemble du trac\u00e9 sous-marin.<\/p>\n\n\n\n<p>Pr\u00e8s du rivage, le c\u00e2ble est enterr\u00e9 \u00e0 une distance de 200 \u00e0 300 m\u00e8tres de la plage, \u00e0 une &nbsp;profondeur variant entre 1 et 2 m\u00e8tres, en fonction du relief du fond marin. Dans les zones sablonneuses, l\u2019enfouissement atteint environ 2 m\u00e8tres afin d\u2019assurer une meilleure protection contre l\u2019\u00e9rosion et les mouvements du sable.<\/p>\n\n\n\n<p>Le c\u00e2ble, compos\u00e9 de 24 paires de fibres optiques, b\u00e9n\u00e9ficie d\u2019une protection m\u00e9canique renforc\u00e9e gr\u00e2ce \u00e0 un syst\u00e8me de tubes articul\u00e9s (<em>\u00abarticulated pipes\u00bb<\/em>) de 50 centim\u00e8tres de long. Ces segments m\u00e9talliques, embo\u00eet\u00e9s les uns dans les autres, forment une gaine souple mais r\u00e9sistante qui prot\u00e8ge le c\u00e2ble des chocs, des ancres ou des activit\u00e9s maritimes c\u00f4ti\u00e8res.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-1024x538.jpg\" alt=\"\" class=\"wp-image-17788787\" style=\"width:800px\" srcset=\"https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-1024x538.jpg 1024w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-300x158.jpg 300w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-768x403.jpg 768w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-580x305.jpg 580w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-860x452.jpg 860w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2-1160x609.jpg 1160w, https:\/\/kapitalis.com\/tunisie\/wp-content\/uploads\/2025\/11\/Pose-cable-sous-marin-Medusa-Bizerte2.jpg 1200w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><em>G\u00e9rard Estanyol sur le chantier bizertin.<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Des points d\u2019acc\u00e8s techniques soigneusement planifi\u00e9s<\/strong><\/h2>\n\n\n\n<p>Les interventions de maintenance ou de contr\u00f4le se font par l\u2019interm\u00e9diaire de chambres techniques appel\u00e9es Beach Man Holes (BMH). Deux de ces structures ont \u00e9t\u00e9 construites sur le site : l\u2019une immerg\u00e9e \u00e0 environ 200 m\u00e8tres en mer, l\u2019autre implant\u00e9e sur la plage. Ces acc\u00e8s permettent aux ing\u00e9nieurs de surveiller, r\u00e9parer ou remplacer les sections du c\u00e2ble si n\u00e9cessaire, sans perturber l\u2019ensemble du r\u00e9seau.<\/p>\n\n\n\n<p>Cette \u00e9tape des travaux marque une avanc\u00e9e significative pour la mise en service prochaine du c\u00e2ble Medusa, pr\u00e9vue avant la fin de 2025. Le projet, port\u00e9 par un consortium international et auquel participe Tunisie T\u00e9l\u00e9com et Orange pour la partie nationale, doit transformer Bizerte en un n\u0153ud num\u00e9rique strat\u00e9gique entre l\u2019Afrique du Nord et l\u2019Europe.<\/p>\n\n\n\n<p>Pour M. Estanyol, ce chantier repr\u00e9sente \u00e0 la fois un d\u00e9fi technique et une contribution \u00e0 un projet d\u2019int\u00e9gration num\u00e9rique sans pr\u00e9c\u00e9dent dans la r\u00e9gion. <em>\u00abChaque m\u00e8tre pos\u00e9 rapproche un peu plus les deux rives de la M\u00e9diterran\u00e9e\u00bb<\/em>, confie l\u2019ing\u00e9nieur, satisfait de la pr\u00e9cision du travail accompli jusqu\u2019ici.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Arriv\u00e9e du c\u00e2ble sous-marin de fibres optiques Medusa \u00e0 Bizerte en Tunisie, l&rsquo;un de ses points d\u2019atterrissage strat\u00e9giques . <\/p>\n","protected":false},"author":8,"featured_media":17788779,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[992,995,2433],"tags":[90312,148,356,125442,595,116250,86029,2945,125441,930],"class_list":["post-17788519","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-economie","category-tunisie","tag-alcatel-submarine-networks","tag-bizerte","tag-europe","tag-gerard-estanyol","tag-mediterranee","tag-medusa","tag-nokia","tag-orange-tunisie","tag-submarine-cable-system","tag-tunisie-telecom"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - 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