HWNPCM-300
Hercules Wireless N PCMCIA
User Manual – 73/79
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 Hercules Wireless N card will automatically adapt to the
signal received.
NAT (Network Address Translation)
Technique allowing for the masking of IP addresses of local area network computers with respect to the
Internet.
OFDM (Orthogonal Frequency Division Multiplexing)
Radio transmission technique providing very high transfer speeds widespread within DSL technology, in the
wireless terrestrial distribution of television signals and adopted for the high-speed 802.11 wireless
communication standard.
PPPoA (Point-to-Point Protocol over ATM)
Protocol allowing for connection to the Internet of computers linked over an ATM network, while still identifying
the user.
