The Administrative Domain (AD) is the entire VoIP network whose dial plan is managed by VRC.
The AD is made up of:
Dial plan regions (managed or foreign)
Note: The AD must contain at least one managed region.
Trunk or carrier IDs (if the carrier sensitive routing (CSR) route type is set to trunk-label or carrier)
The CSR route type of the AD determines how CSR-related features are utilized in the dial plan.
None - VRC disables all CSR-related dial plan features in the AD.
Carrier - VRC assumes that all CSR-related dial plan features utilized in the dial plan are carrier based.
Trunk-label - VRC assumes that all CSR-related dial plan features utilized in the dial plan are trunk-label based.