TS 102 254-2003 Private Integrated Services Network (PISN); Specification@ functional model and information flows; Message Centre Monitoring and Mailbox Identification supplementary service (V1.1.1)
ETSI - European Telecommunications Standards Institute
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TS 102 254-2003
TS 102 254-2003 history
2003TS 102 254-2003 Private Integrated Services Network (PISN); Specification@ functional model and information flows; Message Centre Monitoring and Mailbox Identification supplementary service (V1.1.1)