Information technology -- Telecommunications and information exchange between systems -- Private Integrated Services Network -- Inter-exchange signalling protocol -- Call transfer supplementary service
Это стандарт пересмотрен ISO/IEC 13869:2003
Is one of a series of standards defining services and signalling protocols applicable to Private Services Networks (PISN). The Series uses ISDN concepts as developed by ITU-T and conforms to the framework of Standards for Open Systems Interconnections as defined by ISO/IEC. Specifies the Call transfer supplementary service.