• ETSI EN 300 899-1
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ETSI EN 300 899-1

  • Integrated Services Digital Network (ISDN); Signalling System No.7; Interworking between ISDN User Part (ISUP) version 2 and Digital Subscriber Signalling System No. one (DSS1); Part 1: Protocol specification [ITU-T Recommendation Q.699, modified]
  • standard by European Telecommunications Standards Institute, 09/01/1998
  • Publisher: ETSI

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Interworking between ISUP v2 and DSS1 for basic call and supplementary services Co-ordination with SPS5 and ITU-T SG11 activity is required

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