{"id":18914,"date":"2026-11-11T06:39:48","date_gmt":"2026-11-11T06:39:48","guid":{"rendered":"https:\/\/paicore.tech\/?p=18914"},"modified":"2026-11-11T06:45:06","modified_gmt":"2026-11-11T06:45:06","slug":"supporting-seamless-sms-delivery-during-the-transition-from-2g-3g-to-5g","status":"publish","type":"post","link":"https:\/\/paicore.tech\/news\/supporting-seamless-sms-delivery-during-the-transition-from-2g-3g-to-5g\/","title":{"rendered":"Supporting Seamless SMS Delivery During the Transition from 2G\/3G to 5G"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"18914\" class=\"elementor elementor-18914\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-745e675 elementor-section-height-min-height elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-items-middle elementor-invisible\" data-id=\"745e675\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeIn&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-515aca7\" data-id=\"515aca7\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f8d147b elementor-widget elementor-widget-spacer\" data-id=\"f8d147b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-706c8cf elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"706c8cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Supporting Seamless SMS Delivery During the Transition from 2G\/3G to 5G<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8fa0d18 elementor-align-center elementor-widget elementor-widget-post-info\" data-id=\"8fa0d18\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-f8d7736 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\tNovember 11, 2026\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-159eff6 elementor-widget elementor-widget-shortcode\" data-id=\"159eff6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><p style=\"color: #fff !important; text-align: center;\"><span class=\"span-reading-time rt-reading-time\"><span class=\"rt-label rt-prefix\"><\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">min read<\/span><\/span><\/p><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17beabb elementor-widget elementor-widget-spacer\" data-id=\"17beabb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9634c7a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9634c7a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b986b16\" data-id=\"b986b16\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b1fb0ab elementor-widget elementor-widget-spacer\" data-id=\"b1fb0ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f200e7 elementor-widget elementor-widget-text-editor\" data-id=\"7f200e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div><div><div><div><div><div><div><div><div><h1>Supporting Seamless SMS Delivery During the Transition from 2G\/3G to 5G<\/h1><p>As mobile network operators across Europe transition from legacy 2G and 3G networks to 5G, maintaining reliable SMS communication across different network generations remains an important operational requirement.<\/p><p>According to a press release published by France&#8217;s telecommunications regulator, <strong>Arcep, on 30 March 2026<\/strong>, French mobile operators have established timelines for phasing out their 2G and 3G networks between the end of March 2026 and 2029. During this transition, legacy networks will continue operating, requiring operators to support SMS communication across both legacy and 5G infrastructures.<\/p><p>This creates a need for consistent message processing, routing, and delivery regardless of the underlying network technology.<\/p><h2>Processing SMS Across Legacy and 5G Networks<\/h2><p>When a mobile-originated SMS reaches the Short Message Service Function (SMSF), it arrives as a TPDU (Transfer Protocol Data Unit) encapsulated within a NAS (Non-Access Stratum) message.<\/p><p>Before the message can enter the routing process, the SMSF must correctly parse and interpret its contents. This includes extracting essential information such as:<\/p><ul><li><p>Destination address<\/p><\/li><li><p>Type of Number (TON) and Numbering Plan Indicator (NPI)<\/p><\/li><li><p>Data Coding Scheme (DCS)<\/p><\/li><li><p>User Data<\/p><\/li><\/ul><p>Accurate parsing and interpretation at this stage are essential for ensuring that messages are processed and routed correctly. Errors during decoding can affect subsequent message handling and delivery.<\/p><h2>How PAiCore SMSF Handles Message Decoding and Reassembly<\/h2><p><strong>PAiCore SMSF Module v1.0.0<\/strong> supports the processing of SMS messages across different encoding formats and message structures.<\/p><p>Its key capabilities include:<\/p><p><strong>GSM 7-bit and UCS2 Decoding<\/strong><\/p><p>Supports the decoding of GSM 7-bit and UCS2 encoded messages, enabling the SMSF to process standard text and Unicode content.<\/p><p><strong>User Data Header (UDH) Support<\/strong><\/p><p>Reads and interprets the User Data Header, which carries additional information required for handling structured and concatenated SMS messages.<\/p><p><strong>Multipart Message Reassembly<\/strong><\/p><p>Reassembles multipart SMS messages into a single logical message, ensuring that long messages divided into multiple segments can be processed and delivered together.<\/p><p><strong>Configurable Message Expiry<\/strong><\/p><p>Multipart message reassembly requires maintaining temporary state while individual message segments arrive. PAiCore SMSF holds received segments until all parts are available or a configurable expiry period is reached.<\/p><p>This expiry mechanism helps manage incomplete or interrupted message transmissions while preventing message fragments from remaining in memory indefinitely.<\/p><h2>Unified Message Routing and Delivery<\/h2><p>Once a message has been decoded, validated, and normalized, it enters the platform&#8217;s routing workflow.<\/p><p>PAiCore applies a unified routing engine across multiple communication interfaces and protocols, including:<\/p><ul><li><p>SMPP<\/p><\/li><li><p>HTTP<\/p><\/li><li><p>SS7<\/p><\/li><li><p>Diameter<\/p><\/li><li><p>SIP<\/p><\/li><li><p>5G<\/p><\/li><\/ul><p>This approach enables messages originating from different network environments to follow a consistent processing and routing workflow.<\/p><p>Delivery reports are also handled through the platform&#8217;s delivery flow, allowing the message originator to receive the delivery outcome, including when messages travel through a 5G network path.<\/p><h2>Maintaining Consistent SMS Communication During Network Evolution<\/h2><p>The gradual retirement of 2G and 3G networks does not eliminate the need for reliable SMS communication. Instead, it introduces a period in which operators must support multiple network generations simultaneously.<\/p><p>With message decoding, UDH processing, multipart reassembly, configurable expiry, and unified routing, PAiCore SMSF supports consistent SMS handling across legacy and 5G network environments.<\/p><p>For mobile network operators, this means subscribers can continue to experience consistent SMS processing and delivery as they move between legacy and next-generation mobile networks.<\/p><div><hr \/><\/div><p><strong>Source:<\/strong> Arcep, <em>Mobile networks<\/em>, Press Release, 30 March 2026.<\/p><p><a href=\"https:\/\/en.arcep.fr\/news\/press-releases\/view\/n\/mobile-networks-300326.html\">Read the original announcement on Arcep&#8217;s website<\/a><\/p><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f85f1e2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"f85f1e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0173147 e-flex e-con-boxed e-con e-parent\" data-id=\"0173147\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dd0cc70 elementor-widget elementor-widget-spacer\" data-id=\"dd0cc70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53a6b8e elementor-widget elementor-widget-text-editor\" data-id=\"53a6b8e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Interested&#8230;?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e997386 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"e997386\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/paicore.tech\/contact\/\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Let's Talk<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebfaa6b elementor-widget elementor-widget-spacer\" data-id=\"ebfaa6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>PAiCore SMSF Module v1.0.0 brings SMS communication into the 5G Core by providing a dedicated Short Message Service Function (SMSF) for 5G Standalone (5G SA) networks. It enables operators to extend SMS services to 5G while continuing to leverage their existing Short Message Service Centre (SMSC) infrastructure for message routing, delivery, charging, and reporting. This allows operators to maintain continuity in SMS services as they transition from legacy mobile networks to 5G.<\/p>\n","protected":false},"author":1,"featured_media":18919,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[34],"tags":[110,111,109],"class_list":["post-18914","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-5g","tag-smsc","tag-smsf"],"_links":{"self":[{"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts\/18914","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18914"}],"version-history":[{"count":5,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts\/18914\/revisions"}],"predecessor-version":[{"id":18921,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts\/18914\/revisions\/18921"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/media\/18919"}],"wp:attachment":[{"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18914"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18914"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18914"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}