• ETSI ETS 300 402-1
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ETSI ETS 300 402-1

  • Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 1: General aspects [ITU-T Recommendation Q.920 (1993), modified]
  • standard by European Telecommunications Standards Institute, 11/01/1995
  • Publisher: ETSI

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Future enhancements of ISDN D-Channel LAPD Link Access Procedures applicable at the ISDN user-network interface including S & Q reference point requirements.

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