Telephone Entry Systems

Installed near gates and building entrances to keep out unauthorized persons, telephone entry systems can be found in a wide variety of residential and commercial locations, including condos, apartment complexes, office buildings, and factories. These security entry systems commonly come with a host of useful features, such as built-in clocks, unique ringtones that differ from normal calls, "do not disturb" options for specific time frames, and the capacity to store hundreds of numbers.