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ETSI ETS 300 283
- Business TeleCommunications (BTC); Planning of loudness rating and echo values for private networks digitally connected to the public network
- standard by European Telecommunications Standards Institute, 04/01/1994
- Publisher: ETSI
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Definition of harmonized loudness rating/echo values for the call path within a PBN, when accessing the PSTN (ISDN) via a digital interface, with a fully digital call path within the PSTN (or ISDN)