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Page 121 / 424 Scroll up to view Page 116 - 120
Chapter 5 Broadband
P-2612HNU-Fx User’s Guide
121
3G Comparison Table
See the following table for a comparison between 2G, 2.5G, 2.75G and 3G
wireless technologies.
Table 12
2G, 2.5G, 2.75G, 3G and 3.5G Wireless Technologies
NAME
TYPE
MOBILE PHONE AND DATA STANDARDS
DATA
SPEED
GSM-BASED
CDMA-BASED
2G
Circuit-
switched
GSM (Global System for Mobile
Communications), Personal
Handy-phone System (PHS), etc.
Interim Standard 95 (IS-95), the
first CDMA-based digital cellular
standard pioneered by Qualcomm.
The brand name for IS-95 is
cdmaOne. IS-95 is also known as
TIA-EIA-95.
Slow
Fast
2.5G
Packet-
switched
GPRS (General Packet Radio
Services), High-Speed Circuit-
Switched Data (HSCSD), etc.
CDMA2000 is a hybrid 2.5G / 3G
protocol of mobile
telecommunications standards that
use CDMA, a multiple access
scheme for digital radio.
CDMA2000 1xRTT (1 times Radio
Transmission Technology) is the
core CDMA2000 wireless air
interface standard. It is also known
as 1x, 1xRTT, or IS-2000 and
considered to be a 2.5G or 2.75G
technology.
2.75G
Packet-
switched
Enhanced Data rates for GSM
Evolution (EDGE), Enhanced
GPRS (EGPRS), etc.
3G
Packet-
switched
UMTS (Universal Mobile
Telecommunications System), a
third-generation (3G) wireless
standard defined in ITU
A
specification, is sometimes
marketed as 3GSM. The UMTS
uses GSM infrastructures and W-
CDMA (Wideband Code Division
Multiple Access) as the air
interface.
CDMA2000 EV-DO (Evolution-Data
Optimized, originally 1x Evolution-
Data Only), also referred to as EV-
DO, EVDO, or just EV, is an
evolution of CDMA2000 1xRTT and
enables high-speed wireless
connectivity. It is also denoted as
IS-856 or High Data Rate (HDR).
3.5G
Packet-
switched
HSDPA (High-Speed Downlink
Packet Access) is a mobile
telephony protocol, used for
UMTS-based 3G networks and
allows for higher data transfer
speeds.
A.
The International Telecommunication Union (ITU) is an international organization within which governments and the private sector
coordinate global telecom networks and services.
Page 122 / 424
Chapter 5 Broadband
P-2612HNU-Fx User’s Guide
122
Page 123 / 424
P-2612HNU-Fx User’s Guide
123
C
HAPTER
6
Wireless
6.1
Overview
This chapter describes the ZyXEL Device’s
Network Setting > Wireless
screens.
Use these screens to set up your ZyXEL Device’s wireless connection.
6.1.1
What You Can Do in this Chapter
•
Use the
General
screen to enable the Wireless LAN, enter the SSID and select
the wireless security mode (
Section 6.2 on page 125
).
•
Use the
More AP
screen to set up multiple wireless networks on your ZyXEL
Device (
Section 6.3 on page 133
).
•
Use the
WPS
screen to enable or disable WPS, view or generate a security PIN
(Personal Identification Number) (
Section 6.4 on page 135
).
•
Use the
WMM
screen
to enable Wi-Fi MultiMedia (WMM) to ensure quality of
service in wireless networks for multimedia applications (
Section 6.5 on page
137
).
•
Use the
Scheduling
screen to schedule a time period for the wireless LAN to
operate each day (
Section 6.6 on page 139
).
You don’t necessarily need to use all these screens to set up your wireless
connection. For example, you may just want to set up a network name, a wireless
radio channel and some security in the
General
screen.
6.1.2
Wireless Network Overview
Wireless networks consist of wireless clients, access points and bridges.
•
A wireless client is a radio connected to a user’s computer.
•
An access point is a radio with a wired connection to a network, which can
connect with numerous wireless clients and let them access the network.
•
A bridge is a radio that relays communications between access points and
wireless clients, extending a network’s range.
Traditionally, a wireless network operates in one of two ways.
Page 124 / 424
Chapter 6 Wireless
P-2612HNU-Fx User’s Guide
124
•
An “infrastructure” type of network has one or more access points and one or
more wireless clients. The wireless clients connect to the access points.
•
An “ad-hoc” type of network is one in which there is no access point. Wireless
clients connect to one another in order to exchange information.
The following figure provides an example of a wireless network.
Figure 22
Example of a Wireless Network
The wireless network is the part in the blue circle. In this wireless network,
devices
A
and
B
use the access point (
AP
) to interact with the other devices (such
as the printer) or with the Internet. Your ZyXEL Device is the AP.
Every wireless network must follow these basic guidelines.
•
Every device in the same wireless network must use the same SSID.
The SSID is the name of the wireless network. It stands for Service Set
IDentifier.
•
If two wireless networks overlap, they should use a different channel.
Like radio stations or television channels, each wireless network uses a specific
channel, or frequency, to send and receive information.
•
Every device in the same wireless network must use security compatible with
the AP.
•
Security stops unauthorized devices from using the wireless network. It can also
protect the information that is sent in the wireless network.
Page 125 / 424
Chapter 6 Wireless
P-2612HNU-Fx User’s Guide
125
Radio Channels
In the radio spectrum, there are certain frequency bands allocated for unlicensed,
civilian use. For the purposes of wireless networking, these bands are divided into
numerous channels. This allows a variety of networks to exist in the same place
without interfering with one another. When you create a network, you must select
a channel to use.
Since the available unlicensed spectrum varies from one country to another, the
number of available channels also varies.
6.1.3
Before You Begin
Before you start using these screens, ask yourself the following questions. See
Section 6.7 on page 139
if some of the terms used here do not make sense to
you.
•
What wireless standards do the other wireless devices support (IEEE 802.11g,
for example)? What is the most appropriate standard to use?
•
What security options do the other wireless devices support (WPA-PSK, for
example)? What is the best one to use?
•
Do the other wireless devices support WPS (Wi-Fi Protected Setup)? If so, you
can set up a well-secured network very easily.
Even if some of your devices support WPS and some do not, you can use WPS to
set up your network and then add the non-WPS devices manually, although this
is somewhat more complicated to do.
•
What advanced options do you want to configure, if any? If you want to
configure advanced options, ensure that you know precisely what you want to
do. If you do not want to configure advanced options, leave them alone.
6.2
The Wireless General Screen
Use this screen to enable the Wireless LAN, enter the SSID and select the wireless
security mode.
Note: If you are configuring the ZyXEL Device from a computer connected to the
wireless LAN and you change the ZyXEL Device’s SSID or security settings,
you will lose your wireless connection when you press
Apply
to confirm. You
must then change the wireless settings of your computer to match the ZyXEL
Device’s new settings.

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