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Active standard | Published: 31/07/1997
ETSI ETS 300661-1-ed.1
Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Direct Dialling In (DDI) supplementary service; Part 1: Protocol specification [ITU-T Recommendation Q.2951, clause 1 (1995), modified]
Available languages: English
Available design: PDF - Immediate download, Print design
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Detail information
Designation: ETSI ETS 300661-1-ed.1
Publication date: 31/07/1997
Pages: 7
Country: European technical standard
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