• TS 101 909-20-1 : 1.1.2

    Current The latest, up-to-date edition.

    DIGITAL BROADBAND CABLE ACCESS TO THE PUBLIC TELECOMMUNICATIONS NETWORK; IP MULTIMEDIA TIME CRITICAL SERVICES; PART 20: LAWFUL INTERCEPTION; SUB-PART 1: CMS BASED VOICE TELEPHONY SERVICES

    Publisher:  European Telecommunications Standards Institute

    Published: 

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