Creation of the application “OVEC Phonebook” (Office of the Vocational Education Commission telephone directory) to facilitate communication with various agencies via mobile phones or smartphones. By providing information on the name of the agency, first and last name, email, telephone number, address, website, and location map of the agency. which users can download the program to install and use on their mobile phones or smartphones. For government agencies, administrators, parents, citizens, and the general public in dealing with government affairs.