The Worldwide Numbering and Dialing Plan (WNDP) feature is compatible with the standard numbering system that the Defense Communications Agency (DCA) established. WNDP is a dialing system that is used in a Defense Switched Network (DSN). WNDP is similar to Precedence Calling, but the pattern of digits that users dial is different.
The following table shows the format of the dialed digits:
Access digits
Address digits
FAC
Route code
Area code
Office code
Extension
A
[[1]X]
[NXX]
NXX
XXXX
Where:
A is the 2-digit WNDP FAC for the precedence level
