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Standards [CURRENT]

DIN ETS 300335

Integrated Services Digital Network (ISDN) - Signalling system no. 7 - ISDN User Part (ISUP) version 1; Test specification; English version ETS 300335:1994
Edition 1995-01

Standards [CURRENT]

DIN ETS 300343

Integrated Services Digital Network (ISDN) - Signalling interworking specification for ISDN User Part (ISUP) version 1; English version ETS 300343:1994
Edition 1995-01

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DIN ETS 300335

DIN ETS 300343

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