DS2148 interface equivalent, 5v e1/t1/j1 line interface.
§ § § § § Complete E1, T1, or J1 line interface unit (LIU) Supports both long- and short-haul trunks Internal software-selectable receive-side termination for 75Ω/100Ω/12.
Throughout the data sheet, J1 is represented wherever T1 exists. Receive sensitivity adjusts automatically to the incom.
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