Paradyne 7123 - DSU/CSU - external - 1.544 Mbps - T-1 - EN, English and Paradyne ACCULINK 3165 - DSU/CSU - external - RS-232 - T1 - 1.5 Mbps, English
Paradyne FrameSaver FLEX 9123 - DSU/CSU - EN, Fast EN, Frame Relay