A Proctor Test Set is a tool used by telco personnel to diagnose problems with phone lines. You call the Proctor Test Set number and press buttons on a touch tone phone to active the tests you select. For more information, visit the Proctor web page at http://www.proctorinc.com and look at the 51200-S Telephone Test System. What is a Proctor Test Set in my area? If your NPA is not listed try common numbers such as 111 or 117. NPA Telephone Number Geography 805 111 Bakersfield/Santa Barbara, CA 909 117 Tyler, TX