Conclusion
IMS represents a fantastic opportunity for operators and developers to provide a totally new user experience by using a dedicated architecture. The need for a unified and interoperable infrastructure to carry voice over LTE is driving the VoLTE IMS, and future services taking advantages of this infrastructure are yet to come. We have seen in this guide that IMS is an abstract layer supposed to be independent from the access network. However, Its implementation success in the real very much depends on the ability to establish appropriate quality of service differentiation, security and authentication in the core network, and also on the air interface with the appropriate features (power saving, cell edge retransmission, network capacity). Anritsu expertise can support you in the development and tesing of IMS devices and applications with a variety of dedicated solutions.