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Standard [CURRENT]

DIN ETS 300139:1992-12

Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; service description; english version ETS 300139:1992

German title
ISDN; Dienstmerkmal Halten; Dienstbeschreibung; Englische Fassung ETS 300139:1992
Publication date
1992-12
Original language
English
Pages
18

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Publication date
1992-12
Original language
English
Pages
18
DOI
https://dx.doi.org/10.31030/2554323

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ICS
33.080
DOI
https://dx.doi.org/10.31030/2554323

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