User guide

148
Glossary
Glossary
Term Description
DC-HSDPA
（Dual Cell
High Speed
Downlink
Packet
Access）
An extended standard for data receiving
which has sped up the W-CDMA that is
used in mobile phones.
DHCP
（Dynamic
Host
Configuration
Protocol）
This function automatically assigns an IP
address to devices to be connected to the
IP network, to provide the information
needed for the connection. Setting for
the connection is simplified, but since the
IP address changes with each connection,
identifying the terminal with an IP
address is not possible.
DMZ
（DeMilitarized
Zone）
A region isolated from the internal
network via a firewall, referred to as a
demilitarized zone. Since all of the ports
are opened to the outside via terminals
that are set in the DMZ host, server
applications and online games do not need
to be specially set to enable their use.
HSDPA
（High Speed
Downlink
Packet
Access）
An extended standard for data receiving
which has sped up the W-CDMA that is
used in mobile phones.
HSPA+ （High
Speed Packet
Access +）
An extended standard for data receiving
which has sped up the W-CDMA that is
used in mobile phones.
HSUPA
（High Speed
Uplink Packet
Access）
An extended standard for data receiving
which has speeded up the W-CDMA that is
used in mobile phones.
LTE （Long
Term
Evolution）
Next generation of high-speed
communications standard for transmitting
and receiving data. Third generation (3G)
communications standard used in mobile
phones has been sped up.
MAC Address
（Media
Access
Control
Address）
6-byte ID number uniquely assigned to
all network devices. Typically, a MAC
address is a hexadecimal and is expressed
as "XX:XX:XX:XX:XX:XX."
PIN （Personal
Identification
Number）
Personal identification number required to
use USIM Card on Wi-Fi router. Even if Wi-
Fi router is lost or stolen, use by others
is prevented.
PUK
（Personal
Unblocking
Key）
Key to unlock the PIN lock.
SSID
（Service Set
IDentifier）
The name used to identify a WLAN access
point. If there is more than one wireless
LAN access point in the communication
range, specify the access point to be
connected to.
USIM Card
Install in Wi-Fi router to use. Information
such as the contracted customer’s phone
number is stored in USIM Card.
W-CDMA
（Wideband-
Code Division
Multiple
Access）
A third-generation wireless
communications system for performing
broadband communications.
WEP （Wired
Equivalent
Privacy）
An encryption standard initially used
in wireless communication. Encryption
method that uses a shared key of either 5
or 13 characters is adopted.
WPA （Wi-
Fi Protected
Access）
This is an encryption standard that
improves on WEP. It is a pre-shared
key that is set in advance. After
authentication, encryption keys that
are automatically generated will be
used. Also, two encryption methods
are used, AES (Advanced Encryption
Standard) which supports long encryption
keys and TKIP (Temporal Key Integrity
Protocol) which dynamically changes the
encryption keys, for conducting more
secure communications.
WPS （Wi-
Fi Protected
Setup）
A function which easily enables WLAN
connections and security settings. Several
connection methods are available such as
push-button and PIN code methods.
WPS PIN
A number of several digits which is issued
by a WLAN device that is WPS-compatible.
When setting via WPS PIN code method,
enables secure WLAN setting via the input
of this number into Wi-Fi router.
Firewall
A system for monitoring access from an
external network such as the Internet
to an internal network (LAN), to prevent
unauthorized intrusions.
Port Number
A number for specifying applications
and services to receive data via Internet
communications. Numbers 0 to 65535
can be specified, and it is partitioned
into three categories; a well-known
port number that can be determined
by general applications (0 to 1023), a
registered port number that uses specific
applications (1024 to 49151), etc., and a
dynamic/private port number that can be
freely used (49152 to 65535).
Roaming
Service which enables mobile phones to be
used within the area networks of other
providers based upon agreements between
mobile phone providers.