008) Telecommunication management; Study on Management of Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and Evolved Packet Core (EPC). Technical Report (Release 8), Technical Specification Group Services and System Aspects, 3GPP, July. 38. IEEE Std 802.16f (2005) Part 16: Air Interface for Fixed Broadband Wireless Access Systems - Amendment 1: Management Information Base, IEEE, December. 39. IEEE Std 802.16g (2007) Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems - Amendment 3: Management Plane Procedures and Services, IEEE, December. 40. TM Forum. Case Studies of NGOSS in Use at Service Providers around the World. IMS, Services and Applications 9.1 Introduction Today, normally each service and application requires its dedicated server and control mechanisms to ensure the delivery of the said service. The control mechanisms may need modification as required by the different access technologies. Similarly, in the current 2G/3G networks, services are implemented as vertical silos within black boxes. Often, the applications that run on wireline systems cannot simply run on wireless networks and vice versa. Thus, what is required is the platform that can ease the process of service control and service seamlessness across multiple networks. The answer came in the form of IMS. IMS (IP Multimedia Subsystem) is designed to be the architectural framework for enabling various multimedia services and required signaling. It is an access agnostic system and is specified to be a part of the future packet switched Next Generation Core Networks. It is a standardized network architecture for telecom operators that want to provide mobile and fixed multimedia services. At a high level this chapter has two components namely IMS and Advance Services. Thus, the following topics will be looked at in this episode: Section 9.2 defines IMS. Section 9.3 provides details of 3GPP IMS. Section 9.4 defines the relationship between WiMAX and 3GPP IMS. Section 9.5 briefly defines 3GPP2 IMS that is, MMD