In 2010 the TRICK was the first and only Landline Telephone Switch available. Created by Grandpa and Granny Co. in Florida, USA, it has since been refined and developed to answer the problem of unwanted calls. Whether you have a Single Line or a Two Line phone jack there is a TRICK that can help you. Thousands have found that the quality and dependability built into each unit has lasted through the years. We assemble each TRICK with the best parts available and test each Module for quality assurance before it is packaged. Whatever your configuration of telephones, faxes and phone devices may be you can improve on it with our 4 TRICKs and if needed a Splitter and extra Cords.