Before you begin
Ensure that the following fields are administered for the system:
Adjunct CMS Release on the Feature-Related System Parameters screen.
G3 Version, Vectoring (G3V4 Advanced Vector Routing), and Vectoring (Best Service Routing) on the System-Parameters Customer-Options screen.
CPN Prefix, Ext Len, and Ext Code on the ISDN Numbering - Public/Unknown screen.
Ensure that the Call Vector screen is administered for each vector that uses Best Service Routing (BSR).