
PRIVATE INTEGRATED SERVICES NETWORK (PISN) - SPECIFICATION, FUNCTIONAL MODELS AND INFORMATION FLOWS - CALL PRIORITY INTERRUPTION AND CALL PRIORITY INTERRUPTION PROTECTION SUPPLEMENTARY SERVICES
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
EN 301 655 : 1.2.1 - Identical
ISO/IEC 15991 : 2003(R2008) - Corresponds
ISO/IEC 15991 : 2003(R2008) - Identical