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Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Message waiting indication supplementary service [ISO/IEC 15506 (2003), modified]
STANDARD published on 6.1.2004
Designation standards: ETSI EN 301255-V1.2.1
Publication date standards: 6.1.2004
SKU: NS-309875
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: European technical standard
Category: Technical standards ETSI
Latest update: 2025-06-13 (Number of items: 2 204 052)
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