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ETSI ETS 300 290/A1
- Amendment 1 to - Business TeleCommunications (BTC); 64 kbit/s digital unrestricted leased line with octet integrity (D64U); Terminal equipment interface
- Amendment by European Telecommunications Standards Institute, 11/01/1995
- Publisher: ETSI
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This amendment recommends to use the ISDN basic rate connector instead of the previous connector developed for primary rate ISDN which has some tolerance problems.