Overview Product Description 9120-A1-203 - Frame Relay access unit is an SNMP-managed T1/FT1 frame relay microswitch with DSU/CSU functionality (Refurbished) 90 Day Warranty Product Videos Custom Field Product Reviews Write a Review Write a Review × 9120-A1-203 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *