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ETSI TBR 003/A1
- Amendment 1 to - Integrated Services Digital Network (ISDN); Attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access
- Amendment by European Telecommunications Standards Institute, 12/01/1997
- Publisher: ETSI
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Revision of known shortcomings in the TTCN at layers 1, 2 and 3. Completion of the TTCN DIS to IS conversion. New tests will only be developed at the specific request of the ACTE/NTRAC group and then only where it can be shown that the test is technically possible and capable of being implemented in TTCN within the timescale of the work item. New Work Item supported by BAPT, Belgacom, BT, France Telecom, NTRA and OFCOM.