Mission critical communications call for the 3G gateway Gateway  

The advanced connection management, wide main input range, coupled with the dual SIM failover and firewall / VPN support makes the M3GIR one of the most reliable and secure wireless methods to communicate.

The Maestro 3G Industrial Router is designed to allow fast connectivity to the Internet, to back-end applications, or to other devices. Maestro 3G Industrial Router is a GPRS/EDGE/UMTS/HSPA+ wireless single port router for fast wireless IP connectivity. By using the 3GIR, it is possible to connect from remote sites to a central site by using the built-in IP-IP tunneling feature. Devices can communicate across firewalls and handle bidirectional communications across a NAT barrier.


Dual SIM, Dual PSU,
The Ultimate Industrial Router Designed for critical industrial applications the Maestro 3GIR features two cellular SIM slots for automatic network fail over should the primary connection be lost. An additional power input is also available  to plug a battery back-up.

Main Features

  • High Speed 21Mbps Connectivity
  • DHCP, Dyn DNS, NTP, NAT, DNAT support
  • IP-IP tunneling
  • VPN client support
  • SIM failover (dual sim card)
  • Wide mains input range
  • Optional battery back-up
  • 20 LEDs for visual check


- Multiband GSM 850/900/1800/1900 MHz
- Multiband W-CDMA 850/900/1900/2100 MHz
- GPRS class 12 / EDGE class 10
- 3G UMTS: Up to 384 Kbits/sec
- HSPA + mode: Up to 21 Mbps downlink
- HSPA + mode: Up to 5.76 Mbps uplink
- ETSI GSM Phase 2+ compliant
- LED Bar RSSI (Receive Signal Strength Indication)
- LED indication of Network Registration, Up / Down Data Traffic and network availability
- Din Rail Mountable
- Temperature range:
- Functional: -20°C to +60°C
- Storage: -20°C to +60°C
- Casing: metal
- Dimensions: 170x80x35 mm
- Weight: 700g
  • Embedded intelligence - ability to program and/or configure
  • IP64 rated, rugged enclosure, Mil-Spec 810-F
  • Machine protocols
  • Class I Div 2 Compliant
  • Expansion Slot to add IESM expansion boards
  • Comprehensive device management and configuration
  • Low power mode/ wake up timer
  • Robust ARM 11-class processor
  • Remote management, control and configuration
  • WiFi Expansion card (b/g/n)
  • Integrated GPS


- Mains : 85VAC-264VAC / 120VDC-370VDC
- Data : RJ45 10Mbps/100Mbps Ethernet
- DC : 8VDC-30VDC input
- Antenna: Gold-plated SMA female
- Dyn DNS Proxy/DHCP Ser ver


- NAT (Network Address Translation) for internal subnets
- Active connection tracking for UDP and TCP traf fic
- NAT-ing of ICMP traf fic


- Supports IPComp compression transport
- VPN Client support (eg. Checkpoint Firewall-1 VPN)
- IPsec VPN support
- DHCP Server configuration
- APN name and authentication
- Connection status/system log display
- Trouble-shooting page (ping)
- Static IP routing
- IP-IP Tunneling
- Network Preference selection

RaviRaj Technologies provide Ethernet Gateway  is a wireless product for low bandwidth applications which connects any Ethernet, RS232 or dial-only device to GSM network. Our Wireless Ethernet Gateway supports applications like out-of-band management, control and monitoring of remote devices, data transmission and routing. RaviRaj Technologies Ethernet Gateway  is designed to provide economical and simple solution that can be deployed on GSM networks for low bandwidth applications such as ATMs, POS and remote monitoring.

Rugged form factor 3G Gateway offering multiple interfaces and standard GPS to provide high-value versatility for any location-aware application. With 3G mobile broadband connectivity, designed with versatility and flexibility in mind, the Sierra Wireless AirLink GX400 is designed for use in mobile environments (AVL/tracking, field service, public safety) or fixed/portable settings (industrial, utilities, security, enterprise, point-of-sale). A powerful ARM 11 class micro-processor and the addition of an expansion slot, leave room for growth via support for additional connection or communications options and future technologies.

3G/4G Mobile Routing with Wireless Cellular Routers

Wireless cellular router technology makes it possible to establish wireless connections in remote locations for primary or backup data communication. A 3G wireless router or 4G wireless router from Wireless cellular router can be customized with the features required of your application.

CDMA and GSM Networks

Wireless cellular router 3G router and 4G router products operate on over 40 networks worldwide and feature a variety of protocols including LTE, HSPA+, HSUPA, HSDPA, UMTS, EDGE, GPRS, EVDO Rev A and 1xRTT. A Wireless cellular router CDMA router or GSM router provides the flexibility of selecting your preferred service provider and plan based upon your usage needs. Digi wireless cellular routers are certified by most major carriers, including AT&T, Sprint, Verizon, Vodafone and other global carriers.

4G LTE Routers, 4G HSPA+ and 4G WiMAX Routers

Wireless WAN carriers each have their own definition of 4G. According to Wikipedia, “One base advantage of 4G is that it can at any point of travelling time provide an internet data transfer rate higher than any existing cellular services…Two 4G candidate systems are commercially deployed: the Mobile WiMAX standard … and the first-release Long Term Evolution (LTE)…”

Wireless cellular router provides commercial grade HSPA+ routers, WiMAX routers and LTE routers for applications requiring high speed data connection including such as mobile computing, transit, video and electronic signage. Some 4G implementations also provide much lower latency communications, enabling such applications as industrial control, utilities SCADA solutions and other time sensitive applications.

Additional Connectivity Options

In addition to a complete list of cellular standards, Our line of industrial cellular routers and enterprise-class mobile 3G routers and 4G routers support additional device connectivity options including serial (RS-232), USB, Ethernet, Wi-Fi (802.11b/g/n), GPS, I/O, CAN and accelerometer.

Enterprise Class Specifications

Applications in markets such as finance, retail and gaming require added data security and reliability. Features such as async/sync serial ports, stateful firewall inspection, integrated VPN security, and other advanced routing capabilities make Wireless cellular router products ideal for critical and sensitive data. These security features make it possible to integrate high-speed cellular connections into a PCI DSS compliant application.

Application Areasa

a Remote Data Management via IP
a Remote Device Monitoring
a Low bandwidth applications viz. ATM, POS
a External Modem support applications
a Interfacing between terminal device and host system
a Electrical substation automation
a 10/100 Base-T Ethernet port
a DHCP client and server
a DNS support
a GSM/GPRS / CDMA connectivity
a Web Page / Hyper terminal Configuration
a RS-232 serial interface
a Flexible immigration to IP
a Legacy data conversion



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.: About GSM/GPRS Modem :.


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Applications of GSM Modem

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