• ETSI I-ETS 300 245-4
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ETSI I-ETS 300 245-4

  • Integrated Services Digital Network (ISDN); Technical characteristics of telephony terminals; Part 4: Additional Equipment Interface (AEI)
  • standard by European Telecommunications Standards Institute, 02/01/1995
  • Publisher: ETSI

$39.00$78.50


To specify an interface for additional equipment to an ISDN telephony terminal.

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