Siemens SINAUT ST7 - Connecting up the MD2 Modem

Installing and putting a SINAUT modem into operation
5.6 LTOP line transformer with overvoltage protection
Station control system
222 System Manual, 07/2009, C79000-G8976-C178-07
View from above Schematic
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5.6.2 Connecting up the MD2 modem
The following figures show the connection of the standard cable modem MD2. The
connection to the LTOP1 or LTOP2 is via the standard cable that ships with the modem. This
cable has RJ-12 Western plugs at both ends.
Please make sure that the MD2 modem has the correct line termination setting:
● For end point 1200 or 2400 bps: 600 ohms
● For end point 19,200 bps: 150 ohms
● For a tapping point: High resistance
Note
Please make sure that the S1 and S2 switches are set correctly in position 1 or 2 as shown
in the following figures!