• ETSI ETS 300 201
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ETSI ETS 300 201

  • Integrated Services Digital Network (ISDN); Call Forwarding No Reply (CFNR) supplementary service; Service description
  • standard by European Telecommunications Standards Institute, 12/01/1994
  • Publisher: ETSI

$15.00$29.50


Stage 1 of CFNR supplementary service

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