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ETSI ETS 300 256
- Private Integrated Services Network (PISN); Specification, functional models and information flows; Diversion supplementary services
- standard by European Telecommunications Standards Institute, 05/01/1996
- Publisher: ETSI
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This European Telecommunication Standard (ETS) specifies the supplementary services Calling Forwarding Unconditional (SS-CFU), Call Forwarding Busy (SS-CFB), Call Forwarding No Reply (SS-CFNR) and Call Deflection (SS-CD), which are applicable to various basic services supported by Private Integrated Services Networks (PISN).