What is ICS (IMS centralized services)?

The ICS is indicated in GSMA IR.64 and 3GPP TS 23.292, 23.237 and 23.216. Its objective is to give communication administrations by utilizing IP multimedia subsystem (IMS)-based assistance empowering regardless of the utilized access technology of the end user. The ICS provides a normalized method of executing administrations, for example, call sending, barring, hold, resume. ICS is not restricted to voice communication. Video calling, picture sharing and different media streams can be added or taken out from a session at any time.