Step 1:  Provider requests a cancel-undo

• The Cancel-Pending Undo Process may begin with a Service Provider requesting the reversal (undo) of an in-progress cancel for their cancel-pending port.

Step 2:  Is the subscription in cancel-pending status?

• If Yes, go to Step 4.
•  If No, go to Step 3.

Step 3:  NPAC rejects the cancel-undo request

• NPAC sends an error to the requesting SP indicating the current SV status is not valid for a cancel-undo request.
•  Go to Step 6.

Step 4:  Did the provider requesting a cancel-undo issue a cancel for this subscription?

• If Yes, go to Step 5.
•  If No, repeat Step 3.

Step 5:  Notify Provider – NPAC updates subscription to status prior to cancel and notifies NNSP and ONSP

• Upon cancel-undo, NPAC logs this information, and changes the subscription status to the status prior to the cancel (either pending  or conflict) .  Both SPs are notified of the change in the subscription status via the SOA interface.
• For the notification process, refer to Inter-Service Provider LNP Operations Flows – Reseller/Interconnected VoIP Provider/Type 1 Notification, Figure 8 .
•  Both SPs take appropriate action related to internal work orders.

Step 6:  End