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Page 21 / 27 Scroll up to view Page 16 - 20
16
2.
agnetic or electric fields. Replace
tor still blinks and does not turn solid on, contact your
Step 3
2.
ert the network cable or
r.
Step 4
whether
age
.
2.
e
Computer Management
window,
3.
s
to view the information about the network adapter
er
Step 5
er name and user password that
ame and the user password are provided by your network
Step 6
ial-up software to dial successfully, perform
1.
er
the terminal, and then use the PPP dial-up
Step 7
Ensure that the terminal or telephone lines are far from the electric
appliances that generate strong m
telephone lines when necessary.
If the ADSL indica
network operator.
Check whether the LAN indicator of the terminal is on.
If the LAN indicator is off, perform further checks as follows:
1.
Ensure that the network adapter of the computer is enabled.
Ensure that the network cable between the terminal and the computer
is properly connected. Remove and then ins
replace the network cable when necessary.
If the LAN indicator is still off, contact an authorized maintenance cente
Check whether the driver for the network adapter is properly installed.
Take a computer that runs Windows XP as an example. To check
the driver for the network adapter is installed, do as follows:
1.
On the desktop, right-click
My Computer,
and then choose
Man
In the navigation tree of th
choose
Device Manager
.
In the right pane of the
Computer Management
window, click
Network adapter
of the computer.
If no network adapter is found or if a question mark (?) or an exclamation
mark (!) is displayed next to the icon of the network adapter, you can inf
that the driver for the network adapter is not properly installed. In this
case, re-install the driver for the network adapter of the computer.
Ensure that you have entered the correct us
are required by the PPP dial-up software.
The user n
operator.
Check whether you can use the PPP dial-up software to dial successfully.
If you cannot use the PPP d
further checks as follows:
Stop the PPP dial-up software and then power off the terminal. Aft
five minutes, power on
software to dial again.
2.
Restore the default settings of the terminal.
If the problem persists, contact your network operator.
Check whether the proxy server of the Web browser is correctly
configured. Take the Internet Explorer installed on a computer that runs
Page 22 / 27
17
oxy server of the
d, do as follows:
4.
al Area Network (LAN) settings
group box, click
LAN
5.
r your
to dial-up or VPN
Step 8
e Web sites to check whether the terminal can access
inal still cannot access Web sites, contact your network service
Windows XP as an example. To check whether the pr
Web browser is correctly configure
1.
Launch the Internet Explorer.
2.
Choose
Tools
>
Internet Options
.
3.
In the
Internet Options
dialog box, click the
Connections
tab.
In the
Loc
Settings
.
In the
Proxy server
group box of the
Local Area Network (LAN)
Settings
dialog box, ensure that the
Use a proxy server fo
LAN (These settings will not apply
connections).
check box is cleared.
Try to access multipl
these Web sites.
If the term
provider.
What can I do if Web pages often cannot be displayed during Web page browsing
and can
e displayed after the terminal is restarted?
Ensure that the terminal and other devices, such as telephones
b
Step 1
or fax
s about how to install a splitter, see the related description in the
Step 2
erly connected, the stability of the
Step 3
r electric fields.
machines, are connected to telephone lines through a splitter.
For detail
manual.
Ensure that telephone lines are properly connected.
If the telephone lines are improp
network connection is affected.
Check the positions of your terminal and your computer. Ensure that they
are far from electric appliances, such as microwave ovens, refrigerators,
or cordless telephones, that generate strong magnetic o
If the problem persists, contact your service provider.
What can I do if sometimes the terminal cannot access the Internet through a WLAN
connection or if the WLAN connection is unsteady?
Check the positions of your terminal and your computer. Ensure
are far from the electric appliances, such as microwave ovens,
refrigerators, or
Step 1
that they
cordless telephones, that generate strong magnetic or
Step 2
nals pass through
too many obstacles, such as cement or wooden walls.
electric fields.
Place your terminal in an open area.
Although radio signals can pass through obstacles, the transmission
effects of WLAN radio signals are affected if radio sig
Page 23 / 27
18
Step 3
Place your computer close to your terminal.
If your computer is far from your terminal, the effects of the WLAN are
affected.
Step 4
Place your terminal and computer in another direction.
Step 5
Do not use your terminal to access the WLAN during thunderstorms.
After a broadband terminal is installed, does Internet access degrade call quality or
do telephone calls lower the Internet access rate?
No. The terminal uses the frequency division multiplexing (FDM) and splitter
technologies to separate voice signals from data signals. Although the two types of
signals are transmitted through one telephone line, they are carried by different
frequency bands. Therefore, they do not interfere with each other. In this case, you
can make a telephone call and access the Internet simultaneously, without degrading
call quality or lowering the Internet access rate.
7
Appendix
7.1
Indicators
Indicator
Status
Description
Solid on
The HG521 is powered on.
POWER
Off
The HG521 is powered off.
Blinking
The HG521 is being activated.
Solid on
The HG521 is activated.
ADSL
Off
The HG521 is powered off.
Blinking
z
The HG521 works in routing mode.
z
The WAN connection is set up.
z
Data is being transmitted.
Solid on
z
The HG521 works in routing mode.
z
The WAN connection is set up.
z
No data is being transmitted.
INTERNET
Off
z
The HG521 works in bridge mode or in routing
mode.
z
No WAN connection is set up.
Page 24 / 27
19
Indicator
Status
Description
Blinking
Data is being transmitted through the Ethernet
interface.
Solid on
The Ethernet connection is set up.
LAN
Off
The Ethernet connection is not set up.
Blinking
z
The wireless network function is enabled.
z
Data is being transmitted through the WLAN.
Solid on
z
The wireless network function is enabled.
z
No data is being transmitted through the WLAN.
WLAN
Off
The wireless network function is disabled.
7.2
Interfaces and Buttons
Interface or
Button
Description
POWER
It is used to connect the power adapter.
LAN
It is used to connect to the Ethernet interface on the computer.
RESET
You can press and hold the RESET button for over six seconds
to restore the default settings of the HG521.
Note: After you restore the default settings, your customized
data is lost. Therefore, use this function with caution.
ADSL
It is used to connect to the MODEM interface on the splitter.
It is the power switch and is used to power on or power off the
HG521.
7.3
Default Settings
Parameter
Setting
IP address of the LAN interface
192.168.1.1
Subnet mask of the LAN interface
255.255.255.0
User name used for logging in to the Web-based
configuration utility
admin
Page 25 / 27
20
Parameter
Setting
Password used for logging in to the Web-based
configuration utility
admin
DHCP server function
Enable
Wireless network function
Enable
7.4
Technical Specifications
Item
Specification
Entire-device power supply
5 V DC, 1 A
Entire-device power consumption
< 5 W
Ambient temperature for operation
0°C to 40°C (32
℉
to 104
℉
)
Relative humidity for operation
5% to 95%, non-condensing
Dimensions (L × W × H)
118.4mm × 40.4mm × 90.3mm
Weight
About 115 g
ADSL standards
z
ITU G.992.1 (G.dmt) Annex A
z
ITU G.994.1 (G.hs)
z
ANSI T1.413 Issue 2
ADSL2 standard
ITU G.992.3 (G.dmt.bis) Annex A
ADSL2+
standard
ITU G.992.5 Annex A
Standards
WLAN standard
802.11b , 802.11g and 802.11n (2.4GHz)
G.dmt
T1.413
z
Maximum downlink rate: 8 Mbit/s
z
Maximum uplink rate: 896 kbit/s
DSL
transmission
rates
G.992.5
(ADSL2+)
z
Maximum downlink rate: 24 Mbit/s
z
Maximum uplink rate: 1024 kbit/s

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