CSA ISO/IEC 14846:04 (R2019) : Information Technology - Telecommunications and Information Exchange Between Systems - Private Integrated Services Network - Inter-Exchange Signalling Protocol - Call Intrusion Supplementary Service (Adopted ISO/IEC 14846:2003, second edition, 2003-04-01)
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Information Technology - Telecommunications and Information Exchange Between Systems - Private Integrated Services Network - Inter-Exchange Signalling Protocol - Call Intrusion Supplementary Service (Adopted ISO/IEC 14846:2003, second edition, 2003-04-01)
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