DIDs
A DID is an inbound number. Adding one tells the call center what to do when someone dials it.

Mapping a number
A number with no destination goes nowhere, so map it as soon as you add it.
Related
Destinations are built in Call flows.
A DID is an inbound number. Adding one tells the call center what to do when someone dials it.

A number with no destination goes nowhere, so map it as soon as you add it.
Destinations are built in Call flows.