What is "zero plus" dialing?

Answer by  anusvinu (18)

It is an operator and services billing agent. Many long distance companies leave their messages in the form of local exchange carrier bill. It is a billing clearing agent

Answer by  rogera (788)

Zero plus is also known as ZDPI it's an operator and service billing agent. Abilling clearing house which enters into a contract with operator service providers who want this service.They act as a middle link.

Answer by  mammakat (11147)

ZPDI, zero plus dialing, is a third party billing service, that often comes into play when you call collect, or from a hospital, hotel, or overseas, in which your call is handled by another company- it is in serious dispute for charging excessive fees, and legal action is being enacted.