Multi-Tech Systems MT56DSU-S - Manual (Page 14)

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Chapter 2 - Front & Back Panel Descriptions
2.5 Shunts
V.35 signal levels are more reliable for high speed data and/or longer cable distances. For higher speeds
and/or longer distances, V.35 is preferred. EIA-232-D signal levels are intended for data rates of 19.2 Kbps or
less and cable lengths of 50 feet or less.
There are two shunt positions in the middle left side of the printed circuit board that configure the data port for
either RS232 or V.35 operation. The shunt positions are shown in Figure 2-3.
V.35 Shunt Position RS232 Shunt Position
Figure 2-3. Shunts
The shunt position closest to the DIP switches is for RS232 data interface and the other one is for V.35 data
interface. The shunt is shown in the RS232 (default) position in Figure 2-3. To change the position of a
shunt, refer to the V.35 Shunt in Chapter 3.