Security Classification:Non-Confidential Access to and distribution of this document is restricted to the personspermitted by the securityclassification. This document is subject tocopyright protection. This document is to be used only for the purposes for which it has been supplied and information contained in it must not bedisclosed or in any other way made available, in whole or in part,to persons other than thosepermitted under the securityclassification withoutthe prior written approval of the Association. Copyright Notice Copyright ©2025GSM Association Disclaimer The GSMA makes no representation, warranty or undertaking (express or implied) with respect to and does not accept any responsibility for, andhereby disclaims liability for theaccuracy or completeness or timeliness of the information contained in this document. The information containedin this document may be subject to change without prior notice. Compliance Notice The information contain herein is in full compliance with the GSMAAntitrustCompliancePolicy. This Permanent Reference Document is classified by GSMA as an Industry Specification, as such it has been developed and is maintained byGSMA in accordance with the provisions set out GSMA AA.35-Procedures for Industry Specifications. GSMAOfficial DocumentOPG.10–Open Gateway Technical Realisation Guidelines Table of Contents1Introduction51.1Overview51.2Purpose and Scope51.2.1Audience51.3Definitions51.4Abbreviations71.5References81.6Conventions102High Level Architecture102.1General102.2Detailed Architecture / Components View102.2.1Common Functions112.2.2Exposure Functions262.2.3Federation Functions262.2.4Transformation Functions272.2.5Integration Functions272.2.6Other considerations273Deployment Scenarios283.1Aggregation model283.1.1How to consume Operator Service APIs293.1.2Detailed backend-based flow303.1.3Detailed frontend-based flow353.1.4Enhanced Service API flows373.1.5Offline Access–Refresh Token403.2Variants and simplified models473.2.1Direct Integration Developer–Operator (Single Operator)483.2.2Direct Integration Developer–Operator (Multiple Operators)493.2.3Operator–Operator Integration514Use cases and Operational User Stories514.1Integration to the OGW platform524.2Developer / Application Provider management524.2.1Application Provider Onboarding524.2.2Application Provider Inquiry524.2.3Application Provider Update524.2.4Application Provider Deactivation524.3Application management524.3.1Application onboarding524.3.2API Ordering534.3.3Application Inquiry534.3.4Application Update534.3.5API Access Removal534.3.6Application Deactivation53 GSMAOfficial DocumentOPG.10–Open Gateway Technical Realisation Guidelines 4.4Order management534.4.1Product Order Inquiry534.4.2Product catalogue534.4.3API Access Product Modification Ordering534.5Catalogue Management544.5.1API Product definition544.5.2Catalogue management functions544.6Usage Monitoring544.6.1Real time usage monitoring544.6.2Usage limits544.7Billing and Payment544.7.1Real time charging544.7.2Billing models544.7.3Payment gateway integration544.7.4Automated invoicing544.7.5Audit logs554.7.6Real-Time Performance Monitoring554.7.7Threshold Configuration554.7.8Historical Data and Reporting554.7.9FCAPS management555Reporting555.1Usage reporting attributes565.2Administrative reporting attributes585.3CSP-internal reporting attributes596MVNO implementation606.1Types of MVNOs606.2Open gateway MVNO deployment models616.2.1Resellers616.2.2Thin MVNOs626.2.3Thin MVNO deployment with OGW Platform in MVNO626.2.4Full MVNOs and MVNEs636.3Summary646.4Limitations647Minimum Viable Product647.1API Functional Scope (CAMARA Conformance)647.2Operate APIs (TMF 931)647.3Authorization647.4Privacy and Consent65AnnexATelco Finder-related API specifications66A.1Telco Finder API specification (OpenAPI Specification format)66A.2Routing API specification (OpenAPI Specification format)74A.3Network ID API specification (OpenAPI Specification format)81AnnexBDocument Management85B.1Document History85 B.2Other Information GSMAOfficial DocumentOPG.10–Open Gateway Technical Realisation Guidelines 1Introduction 1.1Overview In the dynamic telecommunications industry, the GSMA Open Gateway initiative representsa significant step toward unified and standardised service delivery and management acrossmobile network operators (MNOs). This initiative seeks to enhance interoperability,streamline service management, and foster innovation through standardised APIs, ensuringa seamless and consistent user experience across diverse networks. The GSMA OpenGateway Platform is a deployment option of the GSMA Operator Platform. This GSMA Open Gateway Technical Realisation Guideline document serves as anessential resource for stakeholders—including MNOs, service aggregators, and technologypartners—who are involved in deploying and utilising the GSMA Open Gateway Platform.This guideline outlines the required steps, best practices, and technical specificationsnecessary for succ