Hercules Wireless Dual Band
HWDB-600
58/63 – User Manual
ATM (Asynchronous Transfer Mode)
High-speed transfer mode for fixed-size data.
CCK (Complementary Code Keying)
Advanced encoding scheme for radio waves in wireless networks allowing for high transfer speeds.
Client
Computer equipped with a PCI, USB or PCMCIA WiFi adapter.
DHCP (Dynamic Host Configuration Protocol)
Protocol managing the allocation of IP addresses to computers.
DSSS (Direct Sequence Spread Spectrum)
Technique for using radio frequencies in broad-spectrum wireless networks meant to increase the range of
transmissions.
ESSID (Service Set Identifier)
8 to 32-character identifier, often abbreviated as SSID, serving as the unique name for a network shared by
clients and the access point.
Ethernet port (or RJ-45)
Port allowing for the connection of two devices via a cable, such as a PC and a router, in order to exchange
data packets without collision.
Filter
Device placed between the telephone plug and the modem to improve the quality of telephone
communications, which are often degraded by ADSL signals.
Firewall
Combination of software and security devices protecting a network connected to the Internet.
Infrastructure mode
Communication mode consisting of grouping together several computers equipped with WiFi in a network via
a wireless access point such as the Hercules ADSL router.
IP address
Unique computer address assigned by the router. Each computer has its own IP address, allowing it to be
identified within the network.
LEAP (Lightweight Extensible Authentication Protocol)
Security protocol developed by the company Cisco for the world of Windows. The format used is
identifier/password.
MAC address (Message Authentication Code)
Unique address created by the builder of the client adapter or router, serving to identify this element within a
network.
MIMO technology (Multiple In, Multiple Out)
Technology used in the 802.11n standard, allowing for the WiFi signal to be shared over several antennas
with a corresponding increase in terms of signal range and transfer speeds. Transmission can take place on
one channel in the 20MHz frequency band (for theoretical maximum transfer speeds of 144.44Mbits/s) or two
channels simultaneously (for theoretical maximum transfer speeds of 300Mbits/s) with 40MHz bandwidth. In
both cases, the WiFi signal's coverage and range are the same. The choice of one mode or the other (20 or
40MHz) depends solely on the transmitter used. The Wireless Dual Band key will automatically adapt to the
signal received.