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Please specify your question about 2.048 E1 MBPS CARD (75 OHM) Mother card for single 2.048 Mbps E1 electrical interfaces. Conforms to CCITT G.703 and G.732. Requires the E1 LIM (90-0568-01) daughter card to complete the interface. The Superrate Adaptor Module (90-0469-01) for E1/T1 rate c *