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ETSI ETR 219

Universal Personal Telecommunication (UPT); Phase 1 (restricted UPT service scenario); Functional requirements for Dual Tone Multi-Frequency (DTMF) type UPT access devices
standard by European Telecommunications Standards Institute, 11/01/1995
Publisher: ETSI

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Specification of the requirements of the UPT phase 1 services on DTMF-type sending devices.

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