• TS 124 206 : 7.5.0

    Current The latest, up-to-date edition.

    DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); UNIVERSAL MOBILE TELECOMMUNICATIONS SYSTEM (UMTS); VOICE CALL CONTINUITY BETWEEN CIRCUIT SWITCHED (CS) AND IP MULTIMEDIA SUBSYSTEM (IMS); STAGE 3

    Publisher:  European Telecommunications Standards Institute

    Published: 

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