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