• ETSI ETS 300 261
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ETSI ETS 300 261

  • Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call transfer supplementary service [ISO/IEC 13869 (1995) modified]
  • standard by European Telecommunications Standards Institute, 11/01/1995
  • Publisher: ETSI

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This European Telecommunication Standard (ETS) specifies the signalling protocol for the support of the Call transfer supplementary service (SS-CT) at the Q reference point between Private Telecommunication Network eXchanges (PTNX) connected together within a Private Telecommunication Network (PTN).

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