This invention uses a computer program to mine preexisting private branch exchange configuration data located in a variety of preexisting source private branch exchange configuration databases. The computer program either creates a new private branch exchange configuration database from parts of existing private branch exchange configuration databases or modifies an existing private branch exchange configuration database. The computer program replaces the current system's reliance upon manual data entry by data engineers to configure the operation of a new telecommunication switch or replace the software in a telecommunication switch that was damaged or requires a new private branch exchange configuration data configuration. This invention provides accurate and timely customer information, significantly decreases the time interval for engineering a new database, decreases the research and data entry time, decreases the interval for lab planning and project management, improves private branch exchange configuration database integrity, provides a cleaner private branch exchange configuration database, reuses existing data eliminating double data entry, reuses some existing software code, and uses preexisting office data administration tools and provides a platform for future growth and expandability. By accomplishing these tasks, the telecommunication switch manufacturer or telecommunication switch operator saves time, money and decreases time-to-market product and service schedules.