Users are demanding better access to their data … indoors and outdoors. Video surveillance and Voice over IP offer promising benefits at lower cost, but are poorly supported by traditional WiFi mesh networks. MeshDynamics' MD4000 Third Generation Mesh offers the mobility, freedom, and power of wireless connectivity and also provides high performance that's only been available in wired networks until today. Unlike other wireless mesh products, the MD4000 family combines multiple radios for backhaul (node-to-node) and client service. This preserves very high performance over many hops. The same compact enclosure may provide up to four modular radios, meeting a wide variety of applications -- no need to install different chassis.

Two Radio Backhaul. Typically two modular slots are used for backhaul radios at 5.8GHz or 2.4GHz frequencies (802.11a/b/g). Dynamic channel assignment allows reuse of channels in larger networks for maximum performance. Minimal throughput delay of 2 milliseconds or less per node allows many hops without degradation. 4.9 GHz and other frequency options are also available.
   

 
Future-Proofed Design. Our product employs field upgradeable radio cards based on today's most widely-used industry standard protocols. For investment protection and easy incorporation of future technologies, the radio cards may be replaced in the field by new and emerging radio card technologies. Radio protocols and frequencies currently supported: 2.4 GHz, 4.9 GHz, 5.8 GHz. MD 4000 mesh node also support frequency band interoperability - multiple backhaul frequency band within one network.
    
Extensive Security, VLANs, 802.11e. One or two modular slots are used for a client-service radios- usually at 2.4GHz to match the installed base of 802.11b/g devices. Extensive security and VLAN features such as 802.11p and 802.11q allow multiple classes of users to be served by one network and provide timely delivery of voice and video. 802.11e ensures timely delivery of voice and video over wireless. WEP and WPA/AES/IEEE 802.11i encryption options are standard. VLANs may have their own WPA encryption.
    
Proven Performance: Government labs have verified that MeshDynamics nodes provide 22 Mbps TCP/IP transmitted over multiple hops (up to 18 hops been tested) and with minimal degradation per hop - less than 2 milliseconds latency per node. Field testing of mobile mesh node performance has also been conducted using streaming video and IXP chariot data generation. 

Local Connections.  Two Ethernet ports on each node allow connection of wired Internet at root nodes, delivery of power via power-over-Ethernet and connection of local IP Ethernet devices such as video cameras or sensors. A Serial port is available to relay sensor data stream. For example, an optional GPS sensor updates the location of the mobile nodes on the NMS.
 
Custom configurations. Each of the four radio card slots are software configurable to be an uplink, downlink, scanner or Access point. The base model 4250, has two 5.8GHZ wireless uplink and downlink in slots 0,1 respectively.  The 4350 adds a third radio in slot 2 for 2.4GHz or 4.9 GHz client access. Slot 3 may house a fourth radio for more backhauls, Access Points or for mobility.
 


Click on an image above to access application notes on that configuration. 

Application Integration. The MeshDynamics Network stack supports customer applications running above the networking layer. Applications have been developed involving both static and mobile nodes. For example, application software on mesh nodes polls sensors via the serial line interface. The sensor data is processed in the node and then routed across the mesh. The processed data is displayed in a custom NMS screen. Both real time database updates and remote viewing via web server interfaces are supported. 
 
MD4000 Model Configurations. Overview of our model configurations and their applications.
MD4000 Network Manager. Overview of our Network monitor and configuration system.
Frequently Asked Questions. On Antenna selection, GPS, Mobility extensions, Hazard proof enclosures.
Technical Documents Center. Download center for brochure, detail specifications, network configuration guides.