A brief study on IP Multimedia Subsystem (IMS) in mobile networks is presented here.
After going through this study, one will be able to answer the following questions:
- What is the IMS structure?
- What are the purpose and tasks of IMS?
- What are the key protocols of IMS?
- Why an operator needs IMS, and what is its relation with the core network?
A comprehensive paper on this subject is the white paper from Ericsson, available in the repository.