Siemens SINAUT ST7 - Page 210

Installing and putting a SINAUT modem into operation
5.5 MD2 dedicated line modem
Station control system
210 System Manual, 07/2009, C79000-G8976-C178-07
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Figure 5-16 Connecting an MD2 to a TIM over RS-232, 2 x 2-wire end point and 2-wire tapping point
variants