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Integrated Services Digital Network (ISDN). Signalling System No.7 (SS7). ISDN User Part (ISUP) version 4 for the international interface. Part 16: Call Hold (HOLD) supplementary service [ITU-T Recommendation Q.733, clause 2 (1993) modified]
STANDARD published on 1.5.2002
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Designation standards: STN EN 300356-16-V4.1.2
Classification mark: 870356
Catalog number: 20058
Publication date standards: 1.5.2002
SKU: NS-519120
Approximate weight : 300 g (0.66 lbs)
Country: Slovak technical standard
Category: Technical standards STN
1.5.2001
1.12.1999
1.7.2002
1.5.2001
1.12.1999
1.7.2002
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