Abstract: Directory assistance calls are routed to an operator tandem switch that distributes incoming directory assistance calls among available operator positions. For each call, the operator interacts with the caller to identify a directory listing sought by the caller and enters the listing information into the operator's terminal to retrieve the requisite information from a data base. An interface is provided between the directory assistance system and an intercept system to handle listings for which a directory number is no longer operative. A flag set in the data base file for the old directory listing would indicate that the number was on intercept. The system can thus provide current information contained in the directory assistance data base or updated information as to the status of subscriber's of non-working directory numbers, obtained from the intercept system data base.