With Session Manager, call routing is controlled by two interdependent schemes:
A global enterprise-wide numbering plan used for centralized routing that is administered on a centralized management console.
One or more local, geographically significant dial plans administer on Communication Manager, or other vendor PBX. Local dial plans specify the actual digits dialed within the constraints of the numbering plan.
Session manager adjusts routing information (digits and domains) to accommodate the numbering plan or dial plans as required.
The numbering plan describes the overall numbering scheme that the enterprise uses for centralized routing. Session Manager uses two different numbering plans for analysis and routing:
