The ISC interface connects the CSCF and the IMS core network components, allowing the Call Session Control Function (CSCF) to interact with other IMS core network entities (like the P-CSCF (Proxy-CSCF), I-CSCF (Interrogating-CSCF), S-CSCF (Serving-CSCF)) to facilitate VoLTE calls.

Multimedia services, such as video calling, messaging, and data sharing, rely on the IMS architecture to function properly. The ISC interface ensures that various multimedia components in the IMS network work together to provide end-to-end services.

The ISC AEF microservice helps developers build and deploy VoLTE and multimedia services by providing a flexible, cloud-native platform. It enables easy integration with IMS core components like CSCFs, facilitating seamless voice, video calls, and messaging over LTE networks.

In summary, ISC AEF simplifies the development of advanced, scalable, and customizable VoLTE and multimedia applications over LTE, with real-time control, cloud capabilities, and ready integration with emerging 5G services.

MNO (Mobile Network Operator) would most typically expose APIs to MVNOs (Mobile Virtual Network Operator) to enable better integration and interoperability between their services. By exposing APIs, MNO can allow MVNO to access its network resources, such as billing, authentication, provisioning, and customer care. This can benefit both parties by reducing operational costs, improving customer satisfaction, and creating new revenue streams. For example, MVNO can offer customized plans and features to its subscribers using MNO’s network infrastructure, while MNO can leverage MVNO’s market reach and brand loyalty.