The Model H-2/4 Hybrid Converter is a passive device that allows conversion of two wire analog modems for use on four wire private 600 ohm lines. The Hybrid Converter requires no external power. Connection to the modem and line are made using either RJ-11 modular jacks and/or screw terminals.
The H-2/4 is available as a standalone unit or as a dual hybrid rack mounted card. The card, model
HR-2/4, mounts in a 12 position card nest, model HR-2/4-12R. The H-2/4 Converter is intended to operate with 600 ohm voice frequency leased lines only. It is not intended for use on dial-up lines.