Ennovah Q-26 Series

These telephone Integration Controllers are compatible with both analog phone lines and digital DSL phone lines. Whether your DSL service is served at a particular phone jack in your home (splittered environment) or at every single one of your home phone jacks (splitterless environment), these Controllers will readily install on your line without disturbing your broadband service. 

If you have regular dial-up internet service rather, the Controller  will not only install on your line remaining totally transparent to your dial-up internet service, with any possible talk-while-online device on the line, but it will also allow your room-to-room intercom and door entry intercom services to remain fully available while you are on line.