Part IV - Building Services with the IMS

Now that we have introduced all of the technologies used in the IMS (see Parts II and III), we are ready to describe how we can use those technologies to achieve the main goal of IMS: providing services. In previous sections we looked at how the IMS provides some services (e.g., multimedia sessions). Other services do not need extra standardization and can be provided with all of the tools we have described (e.g., a voicemail service). In addition, there are services that require extra standardization. ...