ATIS 0300211.2018現(xiàn)行
信息交換．國家安全應急準備 ( NS /EP) 及電訊服務優(yōu)先權( TSP) 的結構和編碼表示法．北美長途通訊系統(tǒng)代碼 Information Interchange - Structure and Coded Representation of National Security and Emergency Preparedness (NS/EP) Telecommunications Service Priority (TSP) Codes for the North American Telecommunications System
出版：Alliance for Telecommunications Industry Solutions
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