Westermo ED-2x0 - Manual (Page 17)

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Application examples
… Remote connection dial in router
The ED-200 has an RS-232 serial interfaces that allows connection of different types
of modem to the router.
… LAN- LAN (on leased line)
The ED-200 can be used to connect two different IP networks together.
The leased line connection can be established by using a PSTN modem with support
for leased line (TD-36) or by direct connection via the RS-422 interface on the
ED-200. If RS-422 is used, the range is limited to 1200 metres according to the RS-422
standard.
… Remote connection dial in router using ED-210
The ED-210 has an integrated PSTN modem with support for V.34. The integrated
modem has the same specification as the Westermo TDW-33 telephone modem.
TDW-33 / TD-36
GDW-11 / IDW-90
ED-200
PSTN / GSM / ISDN
Leased Line
ED-200 ED-200 TD-36 TD-36
ED-210
PSTN