KS X ISO/IEC 15054-2007(2012) Information technology-Telecommunications and information exchange between systems-Private Integrated Services Network-Inter-exchange signalling protocol-Call interception additional network feature
2013KS X ISO/IEC 15054:2013 Information technology-Telecommunications and information exchange between systems-Private Integrated Services Network-Inter-exchange signalling protocol-Call interception additional network feature
0000 KS X ISO/IEC 15054-2007(2012)
2007KS X ISO/IEC 15054:2007 Information technology-Telecommunications and information exchange between systems-Private Integrated Services Network-Inter-exchange signalling protocol-Call interception additional network feature