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IMS normative and partner bodies

After years of antagonism between telecom standards (GSM versus CDMA, SDH versus Sonet, IP versus ATM ...), they start to converge and we ear about an 'ultimate' norma : IP Multimedia Subsystem (IMS). " IP " because it is relying on IP-based transportation netwrok, "Multimedia" because it is managing any kind of communication / data flow, "SubSystem" because it is a part - the central one - of this super-network. Is this standard, pushed by the normalization group 3GPP, "The" future universal standard ? Let's try to answer observing who has interest that standard is adopted and who hasn't.

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