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Glossary
Ad-hoc
Devices in an ad-hoc wireless network communicate directly (“peer to peer”), without
a wireless access point. The WT-1 supports an ad-hoc mode for direct wireless connec-
tion to an ftp server.
“Any” connection
Allows devices to connect to wireless network without an SS-ID. Can be used for wire-
less “hot spots” but is not as secure as connections that require an SS-ID.
BSS-ID (Basic Service Set ID)
All wireless devices on an ad-hoc wireless network share the same BSS-ID. The BSS-ID
may be up to thirty-two characters long and is case sensitive.
See also
Ad-hoc
.
Channel
When multiple wireless LANs with different ESS-IDs are operating on a single frequency
within a given area, transmission speeds will drop. Specifying a separate channel (fre-
quency) for each network can prevent interference and increase transmission speeds
(note that all devices in the same network must be set to the same channel). In the
IEEE 802.11b standard, the 2.4 GHz band is divided into 14 channels, each separated
by 4 MHz.
DHCP (Dynamic Host Confi guration Protocol) Server
Each device in a TCP/IP network requires an IP address. If a DHCP server is present on
the network, IP addresses will be assigned automatically. A DHCP server will not be
present on networks that consist solely of Windows Me, Windows 98, or Windows 95
computers. DHCP may be enabled on other networks; consult the network administra-
tor or see the manual provided with the router or operating system.
DNS (Domain Name Server)
A server that contains a database of IP addresses and host names for the machines it
administers and that converts host names to IP addresses in response to queries from
clients. Each DNS can also query other Domain Name Servers for addresses not listed
in its database.
ESS-ID (Extended Service Set ID)
Multiple BSSs can be confi gured to form an ESS, allowing users to roam between
wireless access points. Only devices with the same ESS-ID as a given access point can
communicate with that access point. The ESS-ID may be up to thirty-two characters
long and is case sensitive.
IIS (Internet Information Services)
Microsoft’s name for its Web server software. Notable for its close connection to Win-
dows-based systems through Active Server Pages (ASPs). When installed as part of the
operating system, IIS makes it relatively easy to build web a server.
