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ETSI TS 101 989
- Corporate Telecommunication Networks (CN); Signalling interworking between QSIG and H.323; Call Completion supplementary services
- standard by European Telecommunications Standards Institute, 08/01/2001
- Publisher: ETSI
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Specify the interworking between the Call Completion supplementary services control protocols H.450.9 (for H.323 compliant packet-based multimedia systems) and QSIG-CC (for Private Integrated Services Networks, PISN).
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