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Private Telecommunication Network (PTN); Inter-exchange signalling protocol Supplementary service interactions; ECMA-QSIG-IA
STANDARD published on 26.9.1995
Designation standards: ETSI ETS 300427-ed.1
Note: WITHDRAWN
Publication date standards: 26.9.1995
SKU: NS-312820
The number of pages: 47
Approximate weight : 141 g (0.31 lbs)
Country: European technical standard
Category: Technical standards ETSI
Latest update: 2025-08-14 (Number of items: 2 211 526)
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