{"id":18877,"date":"2026-11-09T07:21:03","date_gmt":"2026-11-09T07:21:03","guid":{"rendered":"https:\/\/paicore.tech\/?p=18877"},"modified":"2026-11-09T07:28:51","modified_gmt":"2026-11-09T07:28:51","slug":"paicore-smsf-module-5g-standalone-is-here-is-your-sms-infrastructure-ready","status":"publish","type":"post","link":"https:\/\/paicore.tech\/news\/paicore-smsf-module-5g-standalone-is-here-is-your-sms-infrastructure-ready\/","title":{"rendered":"PAiCore SMSF Module: 5G Standalone Is Here. Is Your SMS Infrastructure Ready?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"18877\" class=\"elementor elementor-18877\" 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\">PAiCore SMSF Module: 5G Standalone Is Here. Is Your SMS Infrastructure Ready?<\/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 9, 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\"> 4<\/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<h1>Native SMS in the 5G Core: How PAiCore SMSF Enables Seamless 5G Standalone Messaging<\/h1><h2>Bringing SMS into the heart of the 5G Standalone architecture<\/h2><p>5G Standalone (5G SA) introduces a new network architecture built around the 5G Core (5GC) and its Service-Based Architecture (SBA). Unlike previous mobile network generations, where traditional signalling protocols played a central role, 5G Core network functions communicate through standardized service-based interfaces, primarily using HTTP\/2 APIs.<\/p><p>This architectural shift changes how SMS is delivered across the network. For operators deploying 5G SA, ensuring that SMS works reliably from the beginning requires a dedicated messaging function that is designed to operate natively within the 5G Core.<\/p><p>PAiCore&#8217;s SMSF Module v1.0.0 addresses this requirement by integrating SMS delivery directly into the 5G Core architecture through standardized 3GPP service interfaces.<\/p><h2>Understanding the role of SMSF in the 5G Core<\/h2><p>In a 5G Standalone network, several network functions collaborate to support SMS delivery. Each has a defined responsibility within the messaging process.<\/p><ul><li><p><strong>Access and Mobility Management Function (AMF):<\/strong> Handles User Equipment (UE) registration and mobility management while providing the connectivity required for SMS signalling.<\/p><\/li><li><p><strong>Short Message Service Function (SMSF):<\/strong> Provides SMS functionality within the 5G Core, managing the interaction between the AMF and other core network functions.<\/p><\/li><li><p><strong>Unified Data Management (UDM):<\/strong> Maintains subscriber information and supports SMSF registration and subscriber-related procedures.<\/p><\/li><li><p><strong>Network Repository Function (NRF):<\/strong> Enables network functions to register their services and discover other available functions.<\/p><\/li><\/ul><p>These functions work together through standardized service-based interfaces, allowing SMS to operate as an integrated service rather than relying on legacy messaging architecture.<\/p><h2>Three essential service procedures for 5G SMS<\/h2><p>The SMS delivery process depends on several standardized procedures defined within the 3GPP 5G Core architecture. Three are particularly important to SMSF operation.<\/p><h3>1. Nsmsf_SMService \u2013 Mobile-Originated SMS<\/h3><p>The AMF uses the Nsmsf_SMService interface to forward mobile-originated SMS messages from the User Equipment to the SMSF.<\/p><p>This enables the SMSF to receive and process messages originating from subscribers connected to the 5G network.<\/p><h3>2. Namf_Communication N1N2MessageTransfer \u2013 Mobile-Terminated SMS<\/h3><p>For mobile-terminated SMS, the SMSF uses the AMF&#8217;s Namf_Communication service, specifically the N1N2MessageTransfer operation, to deliver messages towards the intended User Equipment.<\/p><p>This allows the SMSF to coordinate message delivery through the AMF using the 5G Core service-based architecture.<\/p><h3>3. Nudm_UECM \u2013 Subscriber Registration<\/h3><p>The SMSF uses the UDM&#8217;s Nudm_UECM service to register and manage its association with the subscriber.<\/p><p>This procedure supports the registration and management of SMSF-related subscriber context within the 5G Core.<\/p><p>Together, these procedures provide the essential service interactions required to integrate SMS into a standalone 5G environment.<\/p><h2>Native 5G integration with PAiCore SMSF<\/h2><p>A messaging function designed around legacy interfaces can introduce compatibility challenges when deployed in a modern 5G Core. PAiCore SMSF Module v1.0.0 addresses this by implementing the required service procedures directly through native 5GC service-based interfaces.<\/p><p>The module is designed to interact with the AMF, UDM and NRF, following the architectural principles of the 5G Core.<\/p><p>This approach enables operators to incorporate SMS functionality into their standalone network deployments without treating messaging as an external add-on.<\/p><h2>Security built into the architecture<\/h2><p>Security is essential when network functions exchange subscriber-related information and messaging requests.<\/p><p>PAiCore SMSF supports TLS 1.3 with mutual TLS (mTLS) authentication configured per gateway. This allows individual gateways to maintain their own security material and authentication boundaries.<\/p><p>By establishing authenticated communication between network functions, the module supports a more controlled and secure service-based environment.<\/p><h2>Predictable behaviour under network load<\/h2><p>Beyond connectivity and security, operators need predictable behaviour when network functions handle concurrent requests.<\/p><p>PAiCore SMSF includes configurable concurrent-stream limits on its HTTP\/2 interfaces, allowing operators to manage the number of simultaneous streams handled by the module.<\/p><p>It also returns 3GPP-compliant ProblemDetails responses when requests cannot be processed. These standardized error responses provide communicating network functions, including the AMF and NRF, with structured information about request failures.<\/p><p>This helps maintain consistency in error handling and supports interoperability across the 5G Core environment.<\/p><h2>Building SMS readiness into 5G Standalone deployments<\/h2><p>As operators continue expanding their 5G Standalone networks, messaging functionality needs to be considered as part of the core architecture from the beginning.<\/p><p>SMS remains an important mobile service, and its delivery in a 5G SA environment depends on the correct interaction between network functions, standardized service interfaces, secure communication and predictable request handling.<\/p><p>PAiCore SMSF Module v1.0.0 is designed to address these requirements by providing native SMS integration with the AMF, UDM and NRF through the 5G Core service-based architecture.<\/p><p>By building messaging directly into the network architecture, PAiCore helps operators plan for SMS availability from the first day of standalone service.<\/p><h2>Explore PAiCore SMSF Module v1.0.0<\/h2><p>Discover the module, explore its architecture and access the open-source implementation.<\/p><p><strong>Product Page:<\/strong> <a href=\"https:\/\/paicore.tech\/platforms\/messaging\/smsc-smsf\/\">https:\/\/paicore.tech\/platforms\/messaging\/smsc-smsf\/<\/a><\/p><p><strong>GitHub Repository:<\/strong> <a href=\"https:\/\/github.com\/paicoretech\/smsf-module\">https:\/\/github.com\/paicoretech\/smsf-module<\/a><\/p><p><strong>PAiCore Technology<\/strong> \u2013 Building open, interoperable and commercially accessible telecommunications infrastructure.<\/p>\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 into the 5G Core, providing a Short Message Service Function for 5G Standalone networks while allowing existing SMSC infrastructure to continue handling routing, delivery, charging and reporting.<\/p>\n","protected":false},"author":1,"featured_media":18894,"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-18877","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\/18877","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=18877"}],"version-history":[{"count":7,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts\/18877\/revisions"}],"predecessor-version":[{"id":18900,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/posts\/18877\/revisions\/18900"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=\/wp\/v2\/media\/18894"}],"wp:attachment":[{"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paicore.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}