Tuesday 26 May, 2026
This document describes the procedure for configuration of a device-based service performed during the entitlement verification step of the service or during the activation of that service.
The device services covered in this document are Voice-over-Wi-Fi (VoWiFi), Voice-over- Cellular (4G VoLTE and 5G VoNR), SMS over IP (SMSoIP) and On-Device Service Activation (ODSA) of Companion devices (associated with a requesting device) and Primary devices.
The specification leverages the protocol and document presentation described in GSMA PRD RCC.14. In this context, the term “entitlement” refers to the applicability, availability, and status of that service (or feature) on a device.
The entitlement configuration is exchanged between a VoWiFi, Voice-over-Cellular, SMSoIP, Companion ODSA or Primary ODSA client on a device and a Service Provider’s Entitlement Configuration Server. It is independent from the service configuration procedure between clients and the Service Provider’s configuration server described in GSMA PRD RCC.14.
Entitlement configuration defines a mechanism for a Service Provider to inform mobile devices of the status of IP Multimedia Subsystem (IMS) network services like VoWiFi, Voice-over-Cellular and SMSoIP.
In the ODSA context it defines the interaction between an ODSA client, a client application on a device that entitles and activates a companion or primary device’s subscription, and the Service Provider.
This procedure leverages the subscription profile of the end-user, identified by the SIM card, and the network’s readiness in supporting the service. The entitlement client can then dynamically activate (or deactivate) the service according to the activation (respectively deactivation) status retrieved from the Service Provider’s Entitlement Configuration Server.
When required by the service, entitlement configuration also covers on-device service activation flow, for example to display a web page describing the service or to get end-user consent on the service’s Terms and Conditions.
Service configuration in this document deals with the configuration parameters controlling the entitlement of a service. Those parameters come in addition to the ones defined in GSMA PRD IR.51 and GSMA PRD IR.92 that relate to the internal settings and configuration of IMS services. IMS service configuration as defined in GSMA PRD IR.51 and GSMA PRD IR.92 are out of scope.
