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Integrated Services Digital Network (ISDN); Conference call, add-on (CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
STANDARD published on 8.4.1993
Designation standards: ETSI ETS 300185-1-ed.1
Publication date standards: 8.4.1993
SKU: NS-312292
The number of pages: 45
Approximate weight : 135 g (0.30 lbs)
Country: European technical standard
Category: Technical standards ETSI
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