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ETSI ETS 300 657
- Broadband Integrated Services Digital Network (B-ISDN); Signalling System No.7; B-ISDN User Part (B-ISUP) Capability Set 1 (CS1); Supplementary services [ITU-T Recommendation Q.2730 (1995), modified]
- standard by European Telecommunications Standards Institute, 05/01/1997
- Publisher: ETSI
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Application of NISDN supplementary services for Release 1 BISUP.
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