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ETSI EN 301 260

M00001634

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ETSI EN 301 260 Private Integrated Services Network (PISN); Specification, functional models and information flows; Message Waiting Indication (MWI) supplementary service [ISO/IEC 15505 (1997), modified]

standard by European Telecommunications Standards Institute, 10/01/1998

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Stages 1 and 2 of message waiting indication supplementary service.