Absorption is when a wireless signal is completely or partially absorbed by the material is passes through. (Such as drywall, brick, trees, or other materials)
The result of absorption is lowered signal strength for the client.
The Dynamic Host Configuration Protocol (DHCP) is a network protocol that is used to configure devices connected to a network (known as hosts) so they can communicate on that network using the Internet Protocol (IP).
A DHCP server is used to monitor and control the distribution of available IP addresses and configuration information.
For additional information, please see: http://compnetworking.about.com/cs/protocolsdhcp/g/bldef_dhcp.htm
Diffraction occurs as a wireless signal slows down as it encounters an obstacle which causes the wave front to change directions. An easy way to understand diffraction is imagining that wireless signals are the ripples made from a stone dropped into a pond. When the ripples reach an obstacle such as a log sticking out of the water, they will bend around it since they cannot go through it.
Diffraction can cause many problems while setting and configuring a wireless network. Open-Mesh products come with automatic signal quality checking. You can see your signal quality, strength, and speeds via CloudTrax.
The Domain Name System(DNS) translates Internet domain and host names to IP addresses. A great analogy to explain the Domain Name System is that it acts as the phone book for the Internet by translating easy-to-remember domain and host names (e.g. www.example.com) to their appropriate IP address. (e.g. 220.127.116.11)
A Domain Name Server is used to provide these translations when they are requested.
For more information please read: http://compnetworking.about.com/cs/domainnamesystem/g/bldef_dns.htm
A Gateway is essentially exactly what the name implies; a door that can be opened from one path to access another. A Network Gateway is essentially the same thing: a system capable of joining two networks together. Since a Network Gateway appears at the edge of a network, certain devices such as firewalls tend to be integrated with it. A broadband router generally serves as the network gateway for a basic home network.
When regarding to Open-Mesh products, a "Gateway" is the name given to a node that has a direct Ethernet connection to an Internet source. A "Gateway" unit will show dark green in cloudtrax. Open-Mesh devices are identical and can act as both Gateways and Repeaters. There is no need to configure which is which as the device figures this out on it's own. "Gateways" will automatically be configured as such when they receive an active Internet connection via their LAN port, as well as a DHCP address.
An Internet Protocol address (IP Address) is a numerical label assigned to each device (e.g. computer, printer) that is part of a computer network that uses the Internet Protocol for communication. IP addresses serve two primary functions: host or network interface identification and location addressing.
For more information please read: http://compnetworking.about.com/od/networkprotocolsip/g/ip_protocol.htm
A node is essentially a term for a mesh-capable access point, and it may be used interchangeably with access point when dealing with Open-Mesh. A node can be either a gateway or repeater.
Signal Reflection happens when a wireless signal bounces off of a material. Even though this may sound like a good thing, reflection can actually hurt the overall signal quality of the network by bleeding into unwanted areas and causing unwanted wireless noise.
Refraction is the term given when a wireless signal bends as it passes through a medium of higher density than its original origin. A good example of refraction is light entering a prism, or going underwater.
If you had a wireless signal that had to travel through smoke or areas with pockets of warmer air this would produce refraction to occur. Refraction can cause loss of signal quality as the original signal would move in a direction that was not originally intended.
Network Repeaters work by receiving incoming signals and re-transmits the same signal at a higher level or power. Wireless signals are suceptible to many things such as: Refraction, Diffraction, Reflection, Scattering and Absorption. Re-distributing these signals allows wireless transmissions to reach areas that were previously unavailable. (E.g. Across long distances or through objects)
When regarding Open-Mesh products, a "Repeater" is a device that does not have a direct ethernet connection back to an Internet source. "Repeaters" will show up as a light green colour in CloudTrax indicating they are meshing wirelessly with other Open-Mesh Gateways or Repeaters.
From a device standpoint, Open-Mesh Gateways and Repeaters are identical: they become a Gateway or Repeater if they are connected via direct ethernet connection or not.
Scattering occurs when a wireless signal reaches an uneven surface which causes the signal to be bounced off into multiple directions.
Scattering can be caused by things such as leaves on trees, rocky terrain, smog, dust, rain, or even chain link fencing.