In the following Figures the NPDB is shown as belonging to the Number range holder network or to the national originating network. However, the NPDB may be shared within one portability domain i.e. nation-wide.
Figure A.2.1 shows the information flow for successful QoHR.
Figure A.2.2 shows the information flow for unsuccessful QoHR (unallocated number).
Figure A.2.3 shows the information flow for successful TQoD.
Figure A.2.4 shows the information flow for unsuccessful TQoD (number not ported).
Figure A.2.5 shows the information flow for successful OQoD (number ported).
Figure A.2.6 shows the information flow for unsuccessful OQoD (number not ported in).