RR75i v2
3. Router description
GSM-R router RR75i v2 is used to wirelessly connect various equipments and devices
via Ethernet interface 10/100 to the internet or intranet. Thanks to the support of an interna-
tional wireless communications standard for railway communication (GSM-R, Global System
for Mobile Communications – Railway) this router is used for secure and highly reliable com-
munication in the railway network. Among the main advantages of RR75i v2 router includes
high modularity – router offers a number of serial or wireless interfaces for connecting user
devices.
As a standard, this industrial router is equipped with one Ethernet 10/100, one USB Host
port, one binary input/output (I/O) port and one SIM card. To save and backup communication
data a version with two SIM cards is available. The wide range of interface options of the router
further expands expansion Port1 and Port2, which are selected by the customer. For Port1
are available: Ethernet port 10/100, serial interface ports RS232/RS485/RS422/MBUS or in-
puts/outputs (I/O – CNT). Port2 may be equipped with serial interfaces RS232/RS485/RS422/
MBUS, wireless interfaces WIFI/WMBUS, SDH expansion port or inputs/outputs (I/O – CNT).
Both of ports can be fitted with internal switch (exp. port SWITCH). This wireless router is
supplied either in a plastic or metal casing, based on the requirements of the customer.
Configuration is done via web interface protected by password. The GPRS/EDGE router
supports creation of VPN tunnels using technologies IPsec, OpenVPN and L2TP to ensure
safe communication. Web interface provides detail statistics about the wireless router activi-
ties, signal strength, detailed log, etc. Router supports functions: DHCP, NAT, NAT-T, DynDNS,
NTP, VRRP, control by SMS and many other functions.
Other diagnostic functions ensuring continuous communication include automatic inspec-
tion of PPP connection offering an automatic restart feature – in case of connection losses,
or hardware watchdog which monitors the status of the router. With the help of a special win-
dow (start up script window) you may insert Linux scripts for various actions. For some appli-
cations the key option to create several different configurations for one wireless GPRS/EDGE
router, the so-called profiles (maximum of 4), and the option to switch between them (for exam-
ple via SMS, binary input status, etc.) is essential. Cellular wireless routers may automatically
upgrade configuration and firmware from server. This allows mass reconfiguration of many
routers in one time.
For easy use additional software may be used – communication VPN server Digicluster
and software for router monitoring R-SeeNet.
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