Overview Product Description 43X4102 - 4-Channel MACH Stat Mux w/integrated 9600 bps V.29 Lease Line w/2-Port TDM (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × Data Race 43X4102 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *