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The rapid spread of IP-based Access technologies as well as the move towards Core Network Convergence with IMS has led to an explosion in multimedia content delivery across packet networks. IMS provides mobile and multimedia services to the customer. With the addition TISPAN, fixed networks are also supported in IMS, leading to mobile and fixed convergence. With the use of open standard IP protocols, defined by the IETF, IMS allows new services to be easily introduced by service providers. This transition has led to a much wider and richer service experience.
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