4G Wireless Remote Site Access Router.



The MuLogic RSA-1020DW4 is a router for access to remote locations such as power substations, traffic management systems and various other remote site automation equipment.
The unit is equipped with a Wireless WAN port with support for 2G, 3G and 4G mobile networks.

The RSA-1020DW4 incorporates 2 independent serial port gateways that can be used for remote access to devices with a serial interface. One serial gateway connects to an RS232 port, the other to RS485.

The unit is designed for industrial applications and is powered from low voltage DC or AC power sources.

RSA-1020DW4 operates over a temperature range from -40°C to +70°C.



  • Access router for mobile wireless networks.

  • Wireless WAN interface: Penta Band LTE: 800/900/1800/2100/2600 MHz;
    FDD-Band  (20,8,3,7,1); Tri Band UMTS (WCDMA): 900/1800/2100 MHz; FDD-Band (8,3,1);
    Dual Band GSM/GPRS/EDGE: 900/1800 MHz

  • Ethernet port supports 10/100baseT, Auto-MDI/MDIX.

  • Ethernet port supports SCADA protocols like Modbus/TCP, DNP3/IP and IEC60870-5-104.

  • Two Serial Port Gateways for remote serial data over TCP/IP or UDP/IP.

  • Serial ports (one RS232, one RS485) for data rates from 300 to 115200 bit/s.

  • Serial ports support SCADA protocols like Modbus RTU/ASCII, DNP3 and IEC60870-5-101.

  • IPsec and OpenVPN VPN tunnels for secure communication with Ethernet and serial port.

  • GRE tunnels for linking multicast protocols like RIPv2 and OSPF over IPsec.

  • Internal DHCP server, DNS gateway and Dynamic DNS client.

  • Static and dynamic routing (OSPF, RIP Version 1 and 2).

  • Stateful firewall for for Access Control, NAT routing, port forwarding.

  • Management: Web browser, Telnet/SSH, SNMP and serial command port.

  • Email and SMS alerts for system messages like change of WAN address etc.

  • Independent watchdog/reset controller for monitoring vital functions.

  • Dry contact sensor (input) with status reporting via SNMP, SNMP-trap, SMS or email.

  • Dry contact (output) for automatic alarm/status indication or remote control.

  • Internal system temperature sensor with status reporting via SNMP and HTTP.

  • Isolated supply voltage input for industrial applications (suitable for AC and DC).

  • Supply voltage ranges: 11-36Vdc/11-28Vac (Vr1) or 18-60Vdc/18-30Vac (Vr2).

  • Extended operating temperature range: -40°C to +70°C

  • Din-Rail or panel mounting.

Application Areas

Remote access
The RSA-1020DW4 is designed for remote site access to electric power substations, roadside cabinets for traffic control and remote surveillance, and provides access to remote terminal units with an Ethernet port or serial port.

WAN ports

Apart from using WWAN modem for connection to the internet, the RSA-1020DW4 can
also use one of its Ethernet ports for WAN access. In this way an external modem or fiberoptic internet connection can be used.

Wireless WAN

The RSA-1020DW4 incorporates an internal cellular wireless WAN (WWAN) module.
This can be used as primary connection but can also serve as back-up connection for Ethernet WAN links.

Failover operation of WAN ports
The RSA-1020DW4 is equipped with an Ethernet WAN and a Wireless WAN port.

Serial port gateways

The integrated Serial Port gateways offer remote access to the unit's serial ports.
One gateway connects to the RS485/RS422 port, the other to the RS232 port.
Combined operation of RS232 and RS485 to a single gateway is also possible.

The network connection to the serial port gateways allows for the use of various tools like "virtual com port drivers", direct IP socket connection (e.g. "WinSock") or dedicated application software. Also other
"serial to Ethernet converters" or another Mulogic ADSL router can be used. In addition, the serial ports can also be accessed by means of a telnet connection.

Information and Access Security: IPsec and Firewall.
As the unit in most cases will be connected to the public internet, extra security features such as IPsec VPN are supported. IPsec protects against unwanted access and eavesdropping of the data. The IPsec feature creates an encrypted virtual tunnel connection over the internet. Only devices at the end-points of the tunnel can communicate.
A single
RSA-1020DW4 can support multiple IPsec tunnels. The IPsec tunnels can operate in routing mode (layer-3) but can also be used to transparently bridge Ethernet frames (Layer-2).
In addition, access to the management functions of the unit, the serial port and the devices attached to the Ethernet port, can also be limited to pre-defined IP addresses, making it impossible to have access from unknown IP addresses.

The unit's firewall features are used for NAT routing, port forwarding, access restrictions for the devices attached to the unit, and the access restrictions for the unit's configuration and management interface.

Configuration and remote management.
The RSA-1020DW4 can be configured and managed in multiple ways:
  • Web browser (http and https).
  • Telnet connection.
  • SSH connection.
  • SNMP manager.
In addition, the serial port can be used for configuration, should no network connection be present.
The RSA-1020DW4 is equipped with a galvanically isolated power input.
Three voltage ranges are available:
  • 11-36Vdc/11-28Vac.
  • 18-60Vdc/18-30Vac.
  • 18-72Vdc.
For mains power operation (100..240Vac) an external power adapter or power supply is used.

Extended temperature range
The RSA-1020DW4 is designed for operating under extreme temperature conditions.
It is suitable for operating at ambient temperatures ranging from -40°C to +70°C.

Technical Specifications

Wireless cellular modes

  • 4G/LTE bands: 800, 900, 1800 and 2600 MHz.
  • 3G/UMTS bands: (WCDMA/FDD): 900, 1800 and 2100 MHz
  • 2G/GSM bands: 900 and 1800 MHz
  • UMTS/HSPA+, 3GPP release 6/7
  • GSM/GPRS/EDGE, 3GPP release 99/4
  • LTE, 3GPP release 9
  • HSDPA/HSUPA data rates DL: 7.2/14.4 Mbit/s, UL: 2.0/5.76 Mbit/s.
  • LTE data rates: DL: up to 100 Mbit/s, UL: up to 50Mbit/s.

IP routing
  • Static routing.
  • Dynamic routing: OSPF, RIP Version 1 and 2.

  • Statefull firewall for Access Control, NAT routing, port forwarding.

IPSec operation
  • Mode of operation: Tunnel mode.
  • Key exchange Method: Automatic IKE or Manual.
  • Authentication Method: Pre-shared key or X.509 Certificate.
  • PFS support (Perfect Forward Secrecy): RFC 2412.
  • Phase 1 mode: Main or Aggressive.
  • Phase 1 and 2 Encryption Algorithms: DES-CBC, 3DES-CBC, AES-128-CBC, AES-192-CBC or AES-256-CBC
  • Phase 1 and 2 Integrity Algorithms: MD5 or SHA-1
  • Diffie-Hellman groups for key exchange: DH Group 1 (768 bit), DH Group 2 (1024 bit),
    DH Group 5 (1536 bit), DH Group 14 (2048 bit), DH Group 15 (3072 bit), DH Group 16 (4096 bit), DH Group 17 (6144 bit) or DH Group 18 (8192 bit)
  • Key Lifetime: 1-28800 seconds.
  • DPD (dead peer detection).
  • NAT-traversal and NAT KeepAlive.
  • Up to 10 IPsec tunnel configuration profiles.
  • Layer-2 bridging over IPsec tunnels.

OpenVPN features
  • P2P, client and Server mode
  • UDP, TCP server, TCP client
  • Modes: L2 Bridged, L3 Routed
  • Authentication methods: Pre-shared secret, X.509 Client, X.509 Server.
  • Encryption Algorithms: 3DES, AES-128, AES-192, AES-256 or Blowfish.
  • TLS authentication.
  • LZO Compression.

  • Ethernet ports
    • 10/100baseT
    • Half and Full duplex
    • Auto-MDI/MDIX
    Serial ports
    • Port 1: RS232 DB9 Male connector (DTE pinout).
    • Port 2: RS485/RS422 at 4-pin screw terminal connector.
    • Port rates: 300, 600, 1200, 2400, 4800, 9600, 19k2, 38k4, 57k6 or 115k2 bit/s.
    • Data formats: 8N, 8E, 8O, 7E, 7O. One or two stop bits.
    • Buffer size: 10, 20, 50, 100, 200, 300, 400, 500, 1000 or 1500 bytes.
    • Forwarding timeout: 1, 2, 5, 10, 15, 20, 50, 100 or 200 msec.
    Serial gateways
    • Operating modes:TCP server, TCP client, Telnet server, UDP client/server
    • Maximum number of concurrent connections: 256.
    • TCP Alive check and Data Activity check.
    • Statistics per connection.
    Power supply voltage ranges
    • RSA-1020DW4/Vr1: 11-36Vdc/11-28Vac (8W)
    • RSA-1020DW4/Vr2: 18-60Vdc/18-30Vac (8W)
    • RSA-1020DW4/Vr3: 18-72Vdc (8W)
    Dimensions and weight
    • Dimensions RSA-1020DW4: 143x38x95mm(HxWxD),  Weight: 560 gr.
    • Operating temperature range: -40°C to +70°C, Humidity:5..95%
    • Storage temperature range: -50°C to +75°C, Humidity:5..95%
    • CE directives: 2004/108/EC and 2006/95/EC.
    • EMC: EN 55022, EN55024: Emission limits and immunity for residential environments.
    • EMC: EN 61000-6-2: Immunity for industrial environments.
    • Safety: EN 60950.
    • Mechanical Stability: IEC 60068-2-27 shock, IEC 60068-2-6 vibration.
    Order codes
    • RSA-1020DW4/Vr1 (11-36Vdc, 11-28Vac)
    • RSA-1020DW4/Vr2 (18-60Vdc, 18-30Vac)
    • RSA-1020DW4/Vr3 (18-72Vdc)
    Mulogic BV - Plesmanstraat 58D - Veenendaal - The Netherlands - Tel: +31 850 160600 Fax: +31 850 160601

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