ETSI EN 300 357

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ETSI EN 300 357 English PDF Integrated Services Digital Network (ISDN); Completion of Calls to Busy Subscriber (CCBS) supplementary service; Service description

standard published 05/01/2001 by European Telecommunications Standards Institute

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Update of the interaction between the CCBS and Call Forwarding No Reply (CFNR) and between the CCBS and Call Forwarding Busy (CFB) supplementary services.