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ETS 300425:1995-09

Private Telecommunication Network (PTN) - Specification, functional model and information flows - Call intrusion supplementary service

German title
Private Telekommunikationsnetze (PTN) - Beschreibung, Funktionsverteilung und Informationsaustausch - Dienstmerkmal "Aufschalten"
Publication date
1995-09
Original language
English
Pages
89
Publication date
1995-09
Original language
English
Pages
89

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