• ETSI ETR 256
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ETSI ETR 256

  • Integrated Services Digital Network (ISDN); Signalling System No.7; Telephone User Part Plus (TUP+) [CEPT Recommendation T/S 43-02 E (1988)]
  • standard by European Telecommunications Standards Institute, 03/01/1996
  • Publisher: ETSI

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Endorsement of CEPT T/S 43-02

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