DR, or disaster recovery, is a set of policies and procedures that are put in place to ensure that an organization can continue to operate in the event of a disaster or other disruption. In the context of toll-free numbers, disaster recovery is important because it can help to ensure that the toll-free service is maintained and that calls can still be routed to the appropriate destination in the event of a disaster or other disruption.

There are several ways in which disaster recovery can be implemented for toll-free numbers, including:

1. Redundancy: Having multiple systems in place to handle toll-free calls can help to ensure that the service is maintained even if one system fails.
2. Backup systems: Having backup systems in place that can be activated in the event of a disaster can help to ensure that toll-free calls can still be routed to the appropriate destination.
3. Remote access: Ensuring that staff have the ability to access systems remotely can help to ensure that the toll-free service can be maintained even if the primary location is not accessible.

Overall, disaster recovery is important for toll-free numbers because it helps to ensure that the service is maintained and that calls can still be routed to the appropriate destination in the event of a disaster or other disruption.