NF EN 301490-2:2014現行
Private Integrated Services Network (Pisn) - Inter-Exchange Signalling Protocol - Call Transfer Supplementary Services For The Vpn "B" Service Entry Point - Part 2: Abstract Test Suite (Ats) And Partial Protocol Implementation Extra Information For Testing (Pixit) Proforma Specification (V1.2.1)
出版：Association Francaise de Normalisation
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