ISO/IEC-15992 › Complete Document History
Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network Inter-exchange signalling protocol Call Priority Interruption and Call Priority Interruption Protection supplementary services
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2ND EDITION - PRIVATE INTEGRATED SERVICES NE - April 1, 2003
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Obsolete Revision Information: |
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1ST EDITION - INTERRUPTION & CALL PRIORITY I - Dec. 15, 1998
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