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ETS 300199:1994-12

Integrated Services Digital Network (ISDN) - Call Forwarding Busy (CFB) supplementary service - Service description

German title
Diensteintegrierendes Digitalnetz (ISDN) - Dienstmerkmal Rufweiterleitung besetzt (CFB) - Dienstbeschreibung
Publication date
1994-12
Original language
English
Pages
25
Publication date
1994-12
Original language
English
Pages
25

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