Alliander is a Dutch energy company that serves more than 2.5 million private and business customers in the Netherlands, Belgium and Germany. Alliander’s subsidiary Liandon has chosen Westermo's DDW-221 and DDW-100 Ethernet extenders to be part of the regulation, real time monitoring, alarms and flow measurement system of Amsterdam's gas and energy distribution network. In total Alliander has installed 6 DDW-221s and 280 DDW-100s to upgrade its gas distribution system into a modern, SCADA controlled and monitored communication system.

The TR-36B is a rack mount analogue V.34 PSTN and 2 or 4 wire leased line modem. The modem and its rack are designed for harsh industrial applications where a number of modems are required in the same location. It is perfectly adapted for operating in environments with electromagnetic interferences and provides the best levels of reliability and security. It is also an ideal solution for remote connections using existing copper lines. TR-36B supports data rates of up to 115.2 kbit/s on the terminal side and modem modulation speeds of up to 33.6 kbit/s on the line side.

Thanks to the SHDSL transmission technology, Westermo’s DDW-120 Ethernet extender allows existing twisted pair cables to be used to establish a high-speed remote connection between two Ethernet networks. With transfer rates up to 5.7 Mbits/s and an operating distance of up to 15 kilometres at lower data rates, this is an easy-to-install alternative to fibre optic or radio systems when linking remote Ethernet networks. Further, the DDW-120 employs a transient blocking unit on each line interface to provide both over-current and over-voltage protection thus allowing the line to handle indirect lightning strike transients, power induction and short circuit problems.

The new MRD-310 and MRD-330 are robust 3G routers designed for remote access across mobile networks. They provide a very high level of connectivity, and support many mobile standards including GSM, GPRS, 3G UMTS, HSDPA and HSUPA allowing uplink transfer rates of up to 2Mbit/s. Together with the rugged enclosure, DIN-rail mounting and an operating voltage range spanning from 10 VDC to 60 VDC, they are designed for industrial applications in harsh environments. Typical on board (train, trucks, etc.) or ground applications include video surveillance, SCADA/DNP3 telemetry systems and remote access to machines and devices.

The Westermo DDW-220 is an Ethernet extender enhanced with a built-in four port Ethernet switch which allows this one unit to be used to create entire Ethernet solutions. Existing twisted pair cables can be used to establish a high speed remote connection between two Ethernet networks. With transfer rates up to 5.7 Mbits/s and with an operating distance of up to 10 kilometres at lower data rates, this is an easy-to-install alternative to fibre optic or radio systems when linking remote Ethernet networks. The DDW-220 uses a transient blocking unit on each DSL line to provide both over-current and over-voltage protection on the line allowing it to handle indirect lightning strike transients, power induction and short circuit problems.