User guide

RouteFinder-T1 User Guide
MTASR2-20310
Shunts
A shunt on the RS-232/V.35 connector (WAN 2) port allows the same connector to be configured for an
ITU-T V.35 electrical interface signaling or EIA-232C/D signaling. The ITU-T V.35 signaling levels are
generally more reliable for high speed data and/or longer cable distances. The EIA-232C/D signaling is
intended for data rates of 19.2 Kbps or less and cable lengths of 50 feet or less. For higher speeds
and/or longer distances, the V.35 is generally preferred.
The shunt positions are toward the back of the printed circuit board (See Figure 1-4).
5
6
7
8
V.35 Shunt Position
RS232C Shunt Position (Default)
Back Panel Connectors
8-Position DIP Switch
RAM Sockets
LEDs
Figure 1-4. Shunt Positions
The RouteFinder has a shunt for the RS-232 and the V.35 links. The RS-232 and V.35 shunt positions
are identified. To change the position of the shunt, refer to the V.35 “Changing Shunt Position”
procedure.