Overview Product Description Paradyne 3550-A1-002 - 3550 Standalone DSU w/14.4 Dial backup (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × Paradyne 3550-A1-002 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *