Monitoring Central Station and Monitoring Standards What’s Wrong With This? Can you finish the installation of this telephone line connection? Answer to: What’s Wrong With This? The RJ31x normally connects R and R1, and T and T1. Inserting the RJ cord will disconnect the house phones upon activation of an alarm. August 4, 2016 Central Station and Monitoring Standards - ProProfs » Online assessment software KEYWORDS: central stations monitoring services Share This Story