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ITU-T H.450.3 (05/2011)

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Call diversion supplementary service for ITU-T H.323 systems
This Recommendation describes the procedures and the signalling protocol for the Call diversion supplementary service (SS-DIV) in H.323 (Packet based multimedia communications systems) networks. This Recommendation comprises the services Call Forwarding Unconditional (SS-CFU), Call Forwarding Busy (SS-CFB), Call Forwarding No Reply (SS-CFNR) and Call Deflection (SS-CD).SS-CFU, SS-CFB, SS-CFNR and SS-CD are supplementary services which apply during call establishment providing a diversion of an incoming call to another destination endpoint.This Recommendation makes use of the "Generic functional protocol for the support of supplementary services in H.323" as defined in Recommendation H.450.1The procedures and the signalling protocol of this Recommendation are derived from the Call diversion supplementary service specified in ISO/IEC 13872 and ISO/IEC 13873.The revision approved 2011/05 errors discovered in the initial publication.
Citation: https://handle.itu.int/11.1002/1000/11303
Series title: H series: Audiovisual and multimedia systems
  H.200-H.499: Infrastructure of audiovisual services
  H.450-H.499: Supplementary services for multimedia
Approval date: 2011-05-14
Approval process:AAP
Status: In force
Maintenance responsibility: ITU-T Study Group 21
Further details: Patent statement(s)
Development history