{"id":10869,"date":"2026-04-13T16:29:00","date_gmt":"2026-04-13T15:29:00","guid":{"rendered":"https:\/\/www.gsma.com\/about-us\/?page_id=10869"},"modified":"2026-06-17T16:52:33","modified_gmt":"2026-06-17T15:52:33","slug":"working-with-the-industry-aa-35","status":"publish","type":"page","link":"https:\/\/www.gsma.com\/about-us\/working-with-the-industry-aa-35\/","title":{"rendered":"Working with the Industry: AA.35"},"content":{"rendered":"\n<div class=\"wp-block-gsma-main-page-hero hero_block gsma-load-hidden  half-width\">\n<div class=\"wp-block-cover is-light hero_container gsma-load-hidden\"><img loading=\"lazy\" decoding=\"async\" width=\"616\" height=\"450\" class=\"wp-block-cover__image-background wp-image-10919\" alt=\"A group of people stacking their hands together in a show of teamwork and unity, demonstrating the collaborative spirit found in AA.35.\" src=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/AA35_hero_616x450.png\" data-object-fit=\"cover\" srcset=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/AA35_hero_616x450.png 616w, https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/AA35_hero_616x450-300x219.png 300w\" sizes=\"auto, (max-width: 616px) 100vw, 616px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h1 id=\"h-working-with-the-industry-aa-35\" class=\"wp-block-heading hero_title\">Working with the Industry: AA.35<\/h1>\n\n\n\n<p class=\"hero_sub-title wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-group hero_group_container\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><\/div><\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Telecommunication services are becoming increasingly important across the globe to all aspects of everyday life. This continued growth is heavily dependent on the availability of interoperable technologies at all levels and across all platforms. Indeed, the diversification of platforms and technologies is being reflected in an increased and diversified range of standards organisations and companies that participate in enabling telecommunications standards. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In such a world, organisations such as GSMA who focus on bringing technologies to a position where they can be used interoperably across many organisation add value to the overall standards environment. In order to evolve GSMA\u2019s role in standard setting, the GSMA has introduced a process specifically targeted to the production of these \u2018Industry Specifications\u2019 (AA.35).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">AA.35 requires the GSMA to establish structural, procedural and reporting mechanisms that are specifically created to serve the creation and maintenance of mutli-stakeholder Industry Specifications.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-gsma-s-aa-35-what-is-it-nbsp\" class=\"wp-block-heading\"><strong>GSMA\u2019s AA.35 What is it?<\/strong>&nbsp;<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>Specifications that affect operators and industry members alike are defined&nbsp;<em>Industry Specifications<\/em>.<\/li>\n\n\n\n<li>The GSMA&nbsp;<em>Procedures for Industry Specifications<\/em>&nbsp;are outlined in&nbsp;<em>AA.35<\/em>.<\/li>\n\n\n\n<li>AA.35 promotes principles such as openness, balance, due process, transparency, and consensus.<\/li>\n\n\n\n<li>The Industry Specification Approving Group (ISAG) oversees the maintenance of AA.35.<\/li>\n\n\n\n<li>Industry Specifications are&nbsp;maintained&nbsp;by Industry Specification Issuing Groups (ISIGs).<\/li>\n\n\n\n<li>All ISIGs&nbsp;are required to&nbsp;adopt and&nbsp;comply with&nbsp;the procedures in AA.35.<\/li>\n\n\n\n<li>AA.35 Procedures are based on the &#8216;ANSI Essential requirements&#8217;<sup>1<\/sup>&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1 American National Standards Institute:\u202f\u202fDue process requirements for American National Standards \u202f<\/strong><a href=\"https:\/\/ansi.org\/american-national-standards\/ans-introduction\/essential-requirements\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>link<\/strong><\/a>&nbsp;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/ISAG-Structure.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"786\" src=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/ISAG-Structure.jpg\" alt=\"Flowchart: ISIG Subgroup to ISIG to ISAG to Industry Specification Publication, all in red boxes.\" class=\"wp-image-10873\" style=\"width:431px;height:590px\" srcset=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/ISAG-Structure.jpg 574w, https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/ISAG-Structure-219x300.jpg 219w\" sizes=\"auto, (max-width: 574px) 100vw, 574px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<h5 id=\"h-aa-35-introduction\" class=\"wp-block-heading\">AA.35 Introduction<\/h5>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">Why did the GSMA create AA.35?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">To facilitate broader input and support by all affected stakeholders within the industry to any GSMA Technical Specification.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">What is a GSMA Industry Specification?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">An industry specification created in the GSMA for:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>common adoption;<\/li>\n\n\n\n<li>repeated implementation, application and functioning;<\/li>\n\n\n\n<li>general use, operations and support in multiple segments of the telecommunication ecosystem; or<\/li>\n\n\n\n<li>consistent testing, verification and certification; of technology that would directly and materially affect simultaneously mobile network operators and non-mobile network operator participants within the mobile industry ecosystem; by industry<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">The definition of GSMA Industry Specifications does not include specifications that: (i) only affect interoperability or interworking between mobile network operators; or (ii) do not add additional specifications to technical solutions.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">Who approves decisions under AA.35?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<ol class=\"wp-block-list\">\n<li><strong>Industry Standard Issuing Group (ISIG):<\/strong>\n<ul class=\"wp-block-list\">\n<li>Each topic within the GSMA has its own ISIG.<\/li>\n\n\n\n<li>One vote per company group.<\/li>\n\n\n\n<li>Decisions need 71% majority.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Industry Standard Approval Group (ISAG):<\/strong>\n<ul class=\"wp-block-list\">\n<li>There is only one ISAG for all GSMA Technical Specification work.<\/li>\n\n\n\n<li>It is responsible for approval of Industry Specifications and also the management, closure, and as an escalation point for ISIGs.<\/li>\n\n\n\n<li>All editorial decisions are passed back to ISIG.<\/li>\n\n\n\n<li>It comprises two constituencies, i.e. one Operator Member and one Non-Operator Member of up to 30 members each.<\/li>\n\n\n\n<li>Operator Members participate through the GSMA Technology Group membership, Non-Operator Members through nomination and election.<\/li>\n\n\n\n<li>Non-GSMA members are not eligible to sit on the ISAG.<\/li>\n\n\n\n<li>Both constituencies need to agree by simple-majority respectively.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>ISIG subgroups:<\/strong>\n<ul class=\"wp-block-list\">\n<li>ISIG Subgroups are subject to ISIG approval.<\/li>\n\n\n\n<li>Participants in a Subgroup need to be ISIG Participants.<\/li>\n\n\n\n<li>ISIG Subgroups can issue recommendations but have no decision making power in their own right.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">How can my organisation participate on the ISAG?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<ul class=\"wp-block-list\">\n<li>The document is sent back to ISIG with comments.<\/li>\n\n\n\n<li>It is then the responsibility of the ISIG to address comments that have been made by the ISAG before resubmitting for approval.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">What happens if a document is not approved by the ISAG?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<ul class=\"wp-block-list\">\n<li>The document is sent back to ISIG with comments.<\/li>\n\n\n\n<li>It is then the responsibility of the ISIG to address comments that have been made by the ISAG before resubmitting for approval.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">Can my organisation appeal decisions made by either the ISIG and ISAG?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Yes, there is a right of appeal in both the ISAG and ISIG , the respective appeal paths can be found in Section 10 of AA.35.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-accordion accordion_block gsma-load-hidden faq\">\n<p class=\"accordion_question wp-block-paragraph\">My organisation is not a GSMA member. How can I participate?<\/p>\n\n\n\n<div class=\"wp-block-group accordion_answer_container\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<p class=\"wp-block-paragraph\">Any organisations that are not members of the GSMA will be allowed to participate in Industry Specification activities as part of the ISIG provided that all the following are met:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>demonstrated that the organisation is directly and materially affected in a particular GSMA Industry Specification<\/li>\n\n\n\n<li>has a commercial interest related to a specific GSMA Industry Specification<\/li>\n\n\n\n<li>has signed an Industry Specification non-member participation agreement (NMPA)<\/li>\n\n\n\n<li>paid the applicable participation fees as specified by the GSMA.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">It is anticipated that the NMPA and fee mechanism shall be in place by 1 April 2020.<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-gsma-isag-members\" class=\"wp-block-heading\"><strong>GSMA ISAG Members<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The ISAG consists of two groups (\u201cConstituencies\u201d) (minimum of 12 members and a maximum of 35 members),<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Members from the Technology Group (\u201cOperator Members Constituency\u201d) and<\/li>\n\n\n\n<li>Non-Operator Members ( \u201cNon-Operator Members Constituency\u201d)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The ISAG Member term is 2-years.<\/strong><\/p>\n\n\n\n<h3 id=\"h-isag-current-composition\" class=\"wp-block-heading\"><strong>ISAG Current Composition<\/strong><\/h3>\n\n\n\n\n            <div class=\"people  black and white\" id=\"people-edc122ab\"  data-ids=\"11050,11055\"   data-layout=\"\"><\/div>\n        \n<script>\n    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\n\n\n\n<h3 id=\"h-isag-members\" class=\"wp-block-heading\"><\/h3>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\"><\/div>\n\n\n\n<div style=\"height:54px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-structure-of-aa-35-activities\" class=\"wp-block-heading\">Structure of AA.35 Activities <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Current active Industry Specification Groups<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">ISAG oversees all ISIG below<\/p>\n\n\n\n<div class=\"wp-block-gsma-navigation-tiles navigation-tiles_block gsma-load-hidden\">\n<div class=\"wp-block-columns navigation-tiles_columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-esim-group\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/get-involved\/working-groups\/sim-working-group\/\">eSIM Group<\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-fraud-and-security-group\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/get-involved\/working-groups\/fraud-security-group\/\">Fraud and Security Group<\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-network-equipment-security-assurance\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsmaservices.com\/assurance-services\/network-equipment-security-assurance-scheme-nesas\/\">Network Equipment Security Assurance<\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-networks-group\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/get-involved\/working-groups\/networks-group\/\">Networks Group<\/a><\/h5>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-gsma-navigation-tiles navigation-tiles_block gsma-load-hidden\">\n<div class=\"wp-block-columns navigation-tiles_columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-operator-platform-group\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/networks\/operator-platform-hp\/\">Operator Platform Group<\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-rich-communication-services\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/networks\/rcs\/\">Rich Communication Services<\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-security-accreditation-scheme\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsmaservices.com\/assurance-services\/security-accreditation-scheme-sas\/\">Security Accreditation Scheme <\/a><\/h5>\n<\/div>\n\n\n\n<div class=\"wp-block-column nav-tiles_column is-layout-flow wp-block-column-is-layout-flow\">\n<h5 id=\"h-terminal-steering-group\" class=\"wp-block-heading nav-tiles_heading\"><a href=\"https:\/\/www.gsma.com\/get-involved\/working-groups\/terminal-steering-group\/\">Terminal Steering Group<\/a><\/h5>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"h-gsma-aa-35-resources\" class=\"wp-block-heading\">GSMA AA.35 Resources<\/h2>\n\n\n\n<figure class=\"wp-block-table aligncenter is-style-gsma\"><table><tbody><tr><td><strong>AA.35 Versions<\/strong><\/td><td><strong>Status<\/strong><\/td><td><strong>Publication Date<\/strong><\/td><td><strong>Link<\/strong><\/td><\/tr><tr><td><strong>AA.35 v5.0<\/strong><\/td><td>Current<\/td><td><strong>October 2025<\/strong><\/td><td><a href=\"https:\/\/www.gsma.com\/newsroom\/wp-content\/uploads\/AA.35-v5.0.pdf\"><strong>Download here<\/strong><\/a><\/td><\/tr><tr><td><strong>AA.35 v4.0<\/strong><\/td><td>Expired<\/td><td>December 2023<\/td><td><a href=\"https:\/\/www.gsma.com\/newsroom\/wp-content\/uploads\/AA.35-v4.0.pdf\"><strong>Download here<\/strong><\/a><\/td><\/tr><tr><td><strong>AA.35 v3.0<\/strong><\/td><td>Expired<\/td><td>January 2023<\/td><td>Available by request<\/td><\/tr><tr><td><strong>AA.35 v2.0<\/strong><\/td><td>Expired<\/td><td>February 2022<\/td><td>Available by request<\/td><\/tr><tr><td>AA.35 v1.0<\/td><td>Expired<\/td><td>November 2019<\/td><td>Available by request<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Telecommunication services are becoming increasingly important across the globe to all aspects of everyday life. This continued growth is heavily dependent on the availability of interoperable technologies at all levels and across all platforms. Indeed, the diversification of platforms and technologies is being reflected in an increased and diversified range of standards organisations and companies [&hellip;]<\/p>\n","protected":false},"author":106,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_oasis_is_in_workflow":0,"_oasis_original":10857,"_oasis_task_priority":"2normal","footnotes":""},"tags":[],"class_list":["post-10869","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Working with the Industry: AA.35 - About Us<\/title>\n<meta name=\"description\" content=\"AA.35 requires the GSMA to establish structural, procedural and reporting mechanisms that are specifically created to serve the creation and maintenance of mutli-stakeholder Industry Specifications.\" \/>\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.gsma.com\/about-us\/wp-json\/wp\/v2\/pages\/10869\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Working with the Industry: AA.35\" \/>\n<meta property=\"og:description\" content=\"AA.35 requires the GSMA to establish structural, procedural and reporting mechanisms that are specifically created to serve the creation and maintenance of mutli-stakeholder Industry Specifications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gsma.com\/about-us\/working-with-the-industry-aa-35\/\" \/>\n<meta property=\"og:site_name\" content=\"About Us\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/gsma\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-17T15:52:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gsma.com\/about-us\/wp-content\/uploads\/2026\/04\/AA35_hero_616x450.png\" \/>\n\t<meta property=\"og:image:width\" content=\"616\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@GSMA\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Working with the Industry: AA.35 - 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