Abstract: Improved splitter assemblies are described that can accept multiple incoming POTS lines and split each. In the preferred embodiments described herein, each of the incoming POTS lines is split into a voice line and a data line. The exemplary splitter assemblies described herein provide a card retainer that holds a plurality of POTS splitter cards. The splitter assemblies provide a hinged faceplate that retains a plurality of tool-less IDCs to form a panel to which electrical connections can be easily made in order to attach the incoming POTS lines and outgoing voice and data lines. In one preferred embodiment, a protective housing encloses the card retainer to provide a substantially weather-resistant enclosure for the card retainer. This housing is shaped and sized to be easily mounted in or adjacent to an existing building entrance terminal. The card retainer within has a number of retainer slots for splitter cards. Vents are disposed between the slots so that the cards can receive ventilation.