What does call barring mean?

call barring meaning in Law Dictionary

Calls to advanced rate numbers are blocked by asking your phone company for a bar on premium rate calls. The bill payer needs to contact the telephone company to set up because of this block is added or raised.

call barring meaning in Business Dictionary

A telephone solution function that limits certain kinds of outbound telephone calls (including international phone calls) and/or incoming phone calls (eg from unwanted callers).