The 6 foot 50-pin telephone cable interfaces the TDM2400P card with regular RJ-11 two-conductor telephone cables and is used in combination with either the 24-port, 2-wire breakout box (ACC2400PBO), or the 24-port, 2-wire 19" rack mount unit (ACC2400PPP). The cable has one male end for interfacing with the TDM2400P and one female end for interfacing with other 50-pin equipment