User`s guide

Glossary
247
Electronics Industry Association (EIA) and Electronics Industries Alliance (EIA)
1) The Electronic Industries Association (EIA) comprises individual organizations that together
have agreed on certain data transmission standards such as EIA/TIA-232 (formerly known as
RS-232).
2) The Electronics Industries Alliance (EIA) is an alliance of trade organizations that lobby in
the interest of companies engaged in the manufacture of electronics-related products.
Encapsulating Security Payload (ESP)
A routing protocol used to route (tunnel) various types of information between networks. See
also ESP Passthrough.
encryption
The conversion of data into a form, called a ciphertext, that cannot be easily understood by
unauthorized people. Decryption is the process of converting encrypted data back into its
original form, so it can be understood. Encryption/decryption is especially important in wireless
communications. This is because wireless circuits are easier to tap than their hard-wired
counterparts.
end device
In mesh ZigBee networks, end devices are network devices that have no routing capacity. They
must always interact with their parent node (router or coordinator) to transmit or receive data.
An end device can be a source or destination for data packets but cannot route packets. End
devices can be battery-powered and offer low-power operation. Characteristics of end devices
include:
– Several end devices can operate in one PAN
– Can be a data packet source and destination
– All messages are relayed through a coordinator or router
– Low power end devices are not supported in this release.
Enhanced Data Rates for Global Evolution (EDGE)
A faster version of the Global System for Mobile (GSM) wireless service, designed to deliver
data at rates up to 384 Kbps and enable the delivery of multimedia and other broadband
applications to mobile phone and computer users. The EDGE standard is built on the existing
GSM standard, using the same time-division multiple access (TDMA) frame structure and
existing cell arrangements.
ESP Passthrough
A method of carrying IP packets for a Virtual Private Network (VPN) setup. In ESP
Passthrough, inbound IPsec ESP protocol traffic is forwarded from to a VPN device connected
to the Digi device’s Ethernet port.
Evolution-Data Optimized (EV-DO, EVDO, or 1xEV-DO)
A wireless radio broadband data standard adopted by many CDMA mobile phone service
providers. It is standardized by 3GPP2, as part of the CDMA2000 family of standards.
Compared to 1xRTT (CDMA2000 1x) networks, or GPRS and EDGE networks, 1xEV-DO is
significantly faster.
factory defaults
The default configuration values that are set in a device at the factory.