HUAWEI HG552a1 Home Gateway
User Guide
HUAWEI TECHNOLOGIES CO., LTD.
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Huawei Technologies Co., Ltd. provides customers with comprehensive technical
support and service. For any assistance, please contact our local office or company
headquarters.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
Email:
Copyright © Huawei Technologies Co., Ltd. 2010. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by
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, HUAWEI, and
are trademarks or registered trademarks of Huawei
Technologies Co., Ltd.
Other trademarks, product, service and company names mentioned are the
property of their respective owners.
Huawei Proprietary and Confidential
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Notice
Some features of the product and its accessories described herein rely on the
software installed, capacities and settings of local network, and may not be
activated or may be limited by local network operators or network service
providers, thus the descriptions herein may not exactly match the product or its
accessories you purchase.
Huawei Technologies Co., Ltd reserves the right to change or modify any
information or specifications contained in this manual without prior notice or
obligation.
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Contents
Contents
1 Warnings and Precautions....................................................................................... 1
2 Product Overview ..................................................................................................... 3
2.1 Product Features ........................................................................................................... 3
2.2 Network Application..................................................................................................... 4
2.3 Indicators, Interfaces and Buttons................................................................................. 5
2.4 System Requirements ................................................................................................... 8
3 Product Installation .................................................................................................. 8
3.1 Connecting the Cables .................................................................................................. 8
3.2 Getting Started.............................................................................................................. 9
4 Functions Introduction............................................................................................. 9
4.1 Accessing the Web Configuration Page........................................................................ 9
4.2 Accessing Mobile Storage Devices............................................................................. 10
4.4 Changing the IP Address ............................................................................................ 12
4.5 Restoring Default Settings.......................................................................................... 12
5 Voice Services.......................................................................................................... 12
5.1 Introduction ................................................................................................................ 12
5.2 Voice Service Introduction ......................................................................................... 13
Configuration Procedure........................................................................................... 13
6 Wireless Services..................................................................................................... 14
6.1 Configuring the Wireless Connection by the Web Page............................................. 14
6.2 Configuring the Wireless Connection Manually......................................................... 15
7 FAQs ........................................................................................................................ 15
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Figures
Figures
Figure 2-1 Network application of the HG552a1.................................................................. 4
Figure 2-2 Indicators ............................................................................................................ 5
Figure 2-3 Interfaces and buttons ......................................................................................... 7
Figure 3-1 Connecting the HG552a1.................................................................................... 9
Figure 4-1 Connect to the USB interface............................................................................ 10
Figure 5-1 Network model of voice services...................................................................... 13
Tables
Table 2-1 Description of the elements for the network application diagram......................... 5
Table 2-2 Meanings of the indicators.................................................................................... 6
Table 2-3 Functions of the interfaces and buttons................................................................. 7
Table 4-1 Requirements on PC settings.............................................................................. 10
Table 5-1 Description of the equipment in voice service networking................................. 13
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Warnings and Precautions
1 Warnings and Precautions
To use the device properly and safely, read these warnings and precautions carefully and strictly
observe them during operation. Unless otherwise specified, the term "device" refers to the device
and its accessories.
Basic Requirements
z
During storage, transportation, and operation of the device, keep it dry and prevent it from
colliding with other objects.
z
Do not dismantle the device. In case of any fault, contact an authorized service center for
assistance or repair.
z
Without authorization, no organization or individual can change the mechanical, safety, or
performance design of the device.
z
When using the device, observe all applicable laws and regulations and respect the legal rights
of other people.
Environmental Requirements for Using the Device
z
Before connecting and disconnecting cables, stop using the device, and then disconnect it from
the power supply. Ensure that your hands are dry during operation.
z
Keep the device far from sources of heat and fire, such as a heater or a candle.
z
Keep the device far from electronic appliances that generate strong magnetic or electric fields,
such as a microwave oven or a refrigerator.
z
Place the device on a stable surface.
z
Place the device in a cool and well-ventilated indoor area. Do not expose the device to direct
sunlight. Use the device in an area with a temperature ranging from 0°C to 40°C.
z
Do not block the openings on the device with any object. Reserve a minimum space of 10 cm
around the device for heat dissipation.
z
Do not place any object (such as a candle or a water container) on the device. If any foreign
object or liquid enters the device, stop using the device immediately, power it off, remove all
the cables connected to it, and then contact an authorized service center.
z
During thunderstorms, power off the device, and then remove all the cables connected to it to
prevent it from getting damaged due to lightning strikes.
Precautions for Using Wireless Devices
z
When using the device, ensure that the antenna of the device is at least 20 cm away from all
persons.
z
Do not use the device where using wireless devices is prohibited or may cause interference or
danger.
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Warnings and Precautions
z
z
The radio waves generated by the device may interfere with the operation of electronic medical
devices. If you are using any electrical medical device, contact its manufacturer for the
restrictions on the use of the device.
Do not take the device into operating rooms, intensive care units (ICUs), or coronary care units
(CCUs).
Areas with Inflammables and Explosives
z
Do not use the device where inflammables or explosives are stored, for example, in a gas
station, oil depot, or chemical plant. Otherwise, explosions or fires may occur. In addition,
follow the instructions indicated in text or symbols.
z
Do not store or transport the device in the same box as inflammable liquids, gases, or
explosives.
Accessory Requirements
z
Use only the accessories supplied or authorized by the device manufacturer. Otherwise, the
performance of the device may get affected, the warranty for the device or the laws and
regulations related to telecommunications terminals may become null and void, or an injury
may occur.
z
Do not use the power adapter if its cable is damaged. Otherwise, electric shocks or fires may
occur.
z
Ensure that the power adapter meets the specifications indicated on the device nameplate.
z
Ensure that the power adapter meets the requirements of Clause 2.5 in
IEC60950-1/EN60950-1 and it is tested and approved according to national or local standards.
z
For pluggable device, the socket-outlet shall be installed near the device and shall be easily
accessible.
Safety of Children
Keep the device and its accessories out of the reach of children. Otherwise, they may damage the
device and its accessories by mistake, or they may swallow the small components of the device,
causing suffocation or other dangerous situations.
Maintenance
z
If the device is not used for a long time, power it off, and then remove all the cables connected
to it.
z
If any exception occurs, for example, if the device emits any smoke or unusual sound or smell,
stop using the device immediately, power it off, remove all the cables connected to it, and then
contact an authorized service center.
z
Do not trample, pull, or overbend any cable. Otherwise, the cable may get damaged, causing
malfunction of the device.
z
Before cleaning the device, stop using it, power it off, and then remove all the cables connected
to it.
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Product Overview
z
Use a clean, soft, and dry cloth to clean the device shell. Do not use any cleaning agent or spray
to clean the device shell.
2 Product Overview
Product Features
2.1
The EchoLife HG552a1 (hereinafter referred to as the HG552a1) is a high-performance
Asymmetrical Digital Subscriber Line (ADSL) voice gateway designed for home users and small
office and home office (SOHO) users. This section describes the features of the HG552a1.
Flexible Routing
z
Providing an embedded Point to Point Protocol over Ethernet (PPPoE) dialer
z
Supporting the Dynamic Host Configuration Protocol (DHCP) server
z
Supporting simultaneous multi-user access
Abundant Service Interfaces
z
Providing four high-speed Ethernet interfaces
z
Supporting the routing mode and the bridge mode
z
Providing the voice function through the Plain Old Telephone Service (POTS) interface
z
Supporting the multi-service set identifier (MSSID) of Wireless Fidelity (WiFi), which
enables users to use wireless networks conveniently and securely
z
Providing mobile storage capability through the USB host interface
Outstanding Voice Functions
Providing VoIP service and T.38 facsimile service
Standard TR-069 Management Capability
z
Providing complete compatibility with the TR-069 standard of the Digital Subscriber Line
(DSL) Forum
z
Providing complete remote management and diagnosis
z
Providing a zero-configuration solution, which significantly lowers the operation and
maintenance costs and can be combined with the automatic upgrade and service provisioning
processes to conveniently distribute customized services
ADSL/ADSL2+ Interface
z
Providing embedded ADSL/ADSL2+ broadband network functions
z
Supporting the ITU-T G.994.1 (G.hs) handshake protocol
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Product Overview
z
Providing compatibility with Annex A ANSI T1.413 Issue 2, ITU-T G.992.1 (G.dmt), G.992.3
(ADSL2), and G.992.5 (ADSL2+)
Wide Area Network (WAN) Protocol
z
Supporting multiple AAL5 protocols, such as LLC and VC-MUX (RFC1483/2684)
z
Supporting PPPoE (RFC2516)
z
Supporting routing and bridging in conformance with RFC 2684
Network Application
2.2
Figure 2-1 shows the network application of the HG552a1.
Figure 2-1 Network application of the HG552a1
z
z
: indicates an actual network connection.
: indicates a logical management channel.
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Product Overview
Table 2-1 Description of the elements for the network application diagram
No.
1
Item
Full Name
NGN
Next Generation Network
-
2
Internet
3
IPTV
Internet Protocol Television
Broadband Remote Access Server
4
BRAS
5
DSLAM
OSS
Digital Subscriber Line Access Multiplexer
6
Operations Support System
7
ACS
Auto-Configuration Server
8
HG552a1
Telephone
STB
-
9
-
10
11
12
set-top box
Desktop computer
Notebook computer
-
-
Indicators, Interfaces and Buttons
2.3
Indicators
Figure 2-2 Indicators
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Product Overview
Table 2-2 describes the meanings of the indicators.
Table 2-2 Meanings of the indicators
Indicator
Status
On
Description
POWER
The HG552a1 is powered on.
The HG552a1 is powered off.
Off
DSL
On
The DSL connection is established and activated.
Blinking The DSL connection is being activated.
Off
On
The HG552a1 is powered off or no DSL connection.
INTERNET
The Internet connection is set up, but no data is being
transmitted on the WAN interface.
Blinking The Internet connection is set up, and data is being
transmitted.
Off
The HG552a1 is powered off or no Internet
connection.
WLAN
VOIP
On
The WLAN connection is successfully established but
no data is being transmitted.
Blinking The WLAN connection is successfully established
and data is being transmitted.
Off
The HG552a1 is powered off or the WLAN
connection is not yet established.
On
The softswitch has logged in successfully.
Off
The HG552a1 is powered off or no softswitch
connection.
LAN1, LAN2, On
LAN3, LAN4
The LAN connection is successfully established but
no data is being transmitted.
Blinking The LAN connection is successfully established and
data is being transmitted.
Off
The HG552a1 is powered off or the LAN connection
is not yet established.
USB
On
The USB connection is successfully established at
USB host mode but no data is being transmitted.
Blinking The USB connection is successfully established at
USB host mode and data is being transmitted.
Off
The HG552a1 is powered off or the USB connection
is not yet established.
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Product Overview
Interfaces and Buttons
The interfaces and buttons of the HG552a1 are located on the rear panel and side panel, as shown
Figure 2-3 Interfaces and buttons
z
z
The USB interface is on the top of the HG552a1.
The rear panel view and side panel view are for reference only. The actual
appearance may differ.
Table 2-3 lists the functions of the interfaces and buttons.
Table 2-3 Functions of the interfaces and buttons
Interface/Button
is used to…
DSL
connect the HG552a1 to the MODEM interface on the splitter.
PHONE1, PHONE2 connect the HG552a1 to the telephone.
LAN1, LAN2,
LAN3, LAN4
connect the HG552a1 to the Ethernet interface on the computer or the
STB.
RESET
restore the factory settings of the HG552a1.
NOTE
After you restore the default settings, the customized data will be lost.
Therefore, press the RESET button with caution.
POWER
WLAN
WPS
connect the HG552a1 to the power adapter.
enable or disable wireless network function quickly.
start the WPS negotiation.
ON/OFF
power on or off the HG552a1.
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Product Installation
Interface/Button
is used to…
USB (on the top of
the HG552a1)
connect the USB device.
System Requirements
2.4
Make sure that the following requirements are met before using the HG552a1.
Operating System Requirements
The operating system (OS) requirements are as follows:
z
Windows 98
z
Windows Me
z
Microsoft NT4
z
Windows 2000
z
Windows XP
z
Windows Vista
PC Hardware Configuration
The requirements for the hardware configuration of the device are as follows:
z
Memory: greater than 64 MB
z
Remaining space of disk C: greater than 128 MB
z
CD-ROM drive
Web Browser
Internet Explorer 6.0 or later versions, including FireFox 2.0
3 Product Installation
Connecting the Cables
3.1
Before connecting the cables, power off all equipment connected to it including the
HG552a1, the PC, and the switch.
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Functions Introduction
Connect the other equipment, such as the PC and the telephone, to the HG552a1 according to
Figure 3-1 Connecting the HG552a1
1
4
Telephone jack on the wall
Computer
2
5
Splitter
Set-top box
3
6
Telephone
Power adapter
Getting Started
3.2
To power on the HG552a1, press the ON/OFF button on the side panel of the HG552a1.
After you power on the HG552a1, the DSL indicator blinks (for less than three minutes), which
indicates that the HG552a1 is being activated. Later, the DSL indicator turns solid on. The
POWER indicator is also solid on, which indicates that the HG552a1 is working properly.
4 Functions Introduction
Accessing the Web Configuration Page
The HG552a1 provides simple and easy-to-use Web configuration page, through which you can
check and configure the working parameters of the HG552a1.
4.1
Before you log in to the Web configuration page of the HG552a1, make sure the setting
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Functions Introduction
Table 4-1 Requirements on PC settings
Item
Requirement
Network protocol
Enable the TCP/IP.
IP address and subnet mask of the PC
Internet Explorer
Select Automatically obtain an IP address.
Do not use the proxy server.
To log in to the Web configuration page, do as follows:
Step 1 Start the Internet Explorer on the PC.
Step 2 Enter
Enter.
in the address bar of the Internet Explorer, and then press
The Login dialog box is displayed.
Step 3 Enter the name and password (
and then click OK.
and
by default) in the
telekom
telekom
Login
dialog box,
Accessing Mobile Storage Devices
4.2
The HG552a1 provides the home storage function. USB devices, such as USB disks, can be
connected to the USB interface on the HG552a1. You can access mobile storage devices through
the File Transfer Protocol (FTP) server.
To access a mobile storage device, do as follows:
Step 1 Connected the USB device to the USB interface on the HG552a1.
Figure 4-1 Connect to the USB interface
Step 2 Enable the FTP Server and configure the FTP Server parameters.
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Functions Introduction
1. Log in to the Web configuration page.
2. Choose Advanced > USB Port in the navigation tree.
3. Enable Ftp Enable.
4. Enter the user name and password of the FTP server in the User name and
Password text boxes.
5. Enter the password again in the Confirm Password text box.
6. Click Submit to save the settings.
Step 3 Start the FTP client and access the LAN IP address of the HG552a1 through FTP.
The Login dialog box is displayed.
Assume that the LAN IP address of the HG552a1 is 192.168.1.1. To access the LAN IP
Step 4 In the
dialog box, enter the user name and password for logging in to the FTP
Login
After the password is verified, you can read or write the USB storage device connected to the
HG552a1.
Changing the User Name and Password of the
Web Configuration Page
4.3
You can configure all the parameters of the HG552a1 through the Web configuration page. To
prevent unauthorized personnel from changing these parameters, you need to use the user name
and password to log in to the Web configuration page.
To change the user name and password, do as follows:
Step 1 Log in to the Web configuration page.
Step 2 In the navigation tree, choose
Step 3 Enter the new user name in the
>
.
Maintenance Account
New user name
text box.
Step 4 Enter the current password and new password in the
password text boxes.
and
New
Current password
Step 5 Enter the new password again in the
text box for confirmation.
Confirm password
Step 6 Click
to save the settings.
Submit
After you change them successfully, next time log in to the Web configuration page, enter the new
user name and password.
If you forget the user name or password that has been changed, you can restore the
default settings of the HG552a1 by pressing and holding the RESET button for over 3
seconds. After you restore the default settings, the customized data will be lost.
Therefore, press the RESET button with caution.
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Voice Services
Changing the IP Address
4.4
To make the login IP address easy to remember, you can change the IP address after logging in to
the Web configuration page.
To change the IP address, do as follows:
Step 1 Choose
>
in the navigation tree.
Basic LAN
Step 2 Enter a new IP address as desired in the
text box.
IP address
text box.
Step 3 Enter a subnet mask in the
Subnet mask
Step 4 Click
to save the settings.
Submit
z
To log in to the Web configuration page after you change the IP address
successfully, you need to launch the Internet Explorer, and then enter the new IP
address in the address bar.
z
Ensure that the IP address of the computer is in the same network segment as that
of the HG552a1.
Restoring Default Settings
4.5
You can quickly restore the default settings of the HG552a1 by pressing the RESET button. To
restore the default settings, press and hold the RESET button for over six seconds after the
HG552a1 is powered on, and then release the button.
In addition, you can restore the default settings of the HG552a1 through the Web configuration
page.
To restore the default settings through the Web configuration page, do as follows:
Step 1 Log in to the Web configuration page.
Step 2 Choose
>
.
Maintenance Device
Step 3 Click
.
Restore Default Settings
After the preceding operations, the page jumps to the login page. You can log in to the Web
configuration page by entering the default user name and password that are telekom.
5 Voice Services
Introduction
5.1
The HG552a1 supports voice services based on the Session Initiation Protocol (SIP).
The SIP is an application layer protocol used to create, modify, or end multimedia sessions. Based
on text coding, the SIP references the Hyper Text Transport Protocol (HTTP) and the Simple Mail
Transfer Protocol (SMTP), and can cooperate with other protocols, such as the Real-time
Transport Protocol (RTP), the Real-time Transport Control Protocol (RTCP), the Session
Description Protocol (SDP), and the Domain Name Server (DNS) protocol to implement voice
services and the facsimile service.
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Voice Services
The HG552a1 enables voice service interworking between the Internet and the Public Switched
Telephone Network (PSTN).
Voice Service Introduction
5.2
Networking
Figure 5-1 Network model of voice services
Table 5-1 Description of the equipment in voice service networking
No.
1
Item
Description
Proxy Server
A server that forwards requests or responses in place of the client
2
Registrar Server A server that receives registration requests
3
BRAS
Broadband Remote Access Server
4
DSLAM
HG552a1
Telephone
Computer
Digital Subscriber Line Access Multiplexer
5
-
-
-
6
7
Configuration Procedure
The VoIP parameter has been configured with the delivered HG552a1. In general, this parameter
does not need to be configured and please keep the default settings.
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Wireless Services
6 Wireless Services
If a wireless network adapter is installed on your computer, you can connect your computer to the
HG552a1 through a wireless connection.
There are two methods to configure the wireless network connection.
Configuring the Wireless Connection by the Web
Page
6.1
To configure the wireless network connection by configuring the web page, do as follows:
Step 1 Set the wireless network name and access password of the HG552a1 (taking the
authentication type WPA-PSK as an example).
1. Log in to the Web configuration page.
2. In the navigation tree, choose Basic > WLAN.
3. Ensure select Enable WLAN.
4. Enter a wireless network name in the SSID text box.
5. Select WPA-PSK/WPA2-PSK from the Security Mode drop-down list box.
6. Enter an access password in the WPA Pre-Shared Key text box.
7. Select AES from the WPA Encryption drop-down list box, and keep the default
settings of other parameters.
8. Click Submit to save the settings.
Step 2 Enable the wireless configuration service provided by Windows XP.
1. Right-click My Computer, and then choose Manage from the shortcut menu.
2. In the Computer Management window, choose Computer Management (Local)
> Services and Applications >Services.
3. From the services listed in the right pane of the Computer Management window,
right-click Wireless Zero Configuration, and then choose Properties from the
shortcut menu.
4. In the Wireless Zero Configuration Properties (Local Computer) dialog box,
check whether Service status is Started. If not, click Start.
5. Click OK to close the dialog box, and then close the Computer Management
window.
Step 3 Configure the wireless network connection on your computer (taking the Windows XP
operating system as an example).
1. Choose Start > All Programs > Accessories > Communications > Network
Connections.
2. In the Network Connections window, right-click Wireless Network Connection
to display a shortcut menu, and then select View Available Wireless Networks
from the shortcut menu.
and then click Connect in the lower right corner of the window.
then click Connect.
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FAQs
After the password is verified, Connected appears on the icon of the wireless network in the
wireless network list, which indicates that your computer is connected to the HG552a1 through
wireless connection.
Configuring the Wireless Connection Manually
If the wireless network adapter on your computer supports the WPS function, you can connect
your computer to the HG552a1 wirelessly as follows:
6.2
Step 1 Set the WLAN parameters of HG552a1, and then set the
Security WPA-PSK
to ,
The WPS function can be used only when the security mode of the WLAN is set to
WPA-PSK, WPA2-PSK, or WPA-PSK/WPA2-PSK.
Step 2 Press the WPS button on the side panel to start the WPS negotiation of the HG552a1.
Then the WLAN indicator of the HG552a1 blinks.
Step 3 Start the WPS negotiation of the wireless network adapter within 2 minutes.
Wait for a few seconds, and then you can see the WLAN indicator becomes solid on from the
blinking state, indicating that the HG552a1 is connected to your PC through the WPS function.
This state lasts 5 minutes. Then the WLAN indicator turns off.
7 FAQs
How can I configure a computer to use a static IP address?
Take a computer that runs Windows XP as an example. To configure the computer to use a static
IP address, do as follows:
Step 1 In the Control Panel window, double-click Network Connections to display the Network
Connections window.
Step 2 In the
window, right-click the working
Network Connections
and choose Properties.
Local Area Connection
Step 3 In the
group box of the Local Area
This connection uses the following items
Connection Properties dialog box, select Internet Protocol (TCP/IP). Click Properties.
Step 4 Select Use the following IP address.
Step 5 Set the IP address of the computer and ensure that the IP address is in the same network
segment as the local area network (LAN) IP address of the HG552a1.
Assume that the default LAN IP address of the HG552a1 is 192.168.1.1. To set the IP address of
the computer, do as follows:
1. In IP address, enter 192.168.1.100. Ensure that this IP address is unique and not
used by other computers.
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FAQs
The configurable static IP address ranges from 192.168.1.2 to 192.168.1.254.
2. In Subnet mask, enter 255.255.255.0.
3. In Default gateway, enter 192.168.1.1.
Step 6 Consult your network service provider about the IP address of the domain name server
(DNS). In Preferred DNS server and Alternate DNS server, enter the IP address.
If you configure the static IP address for the purposes of accessing the Web configuration page of
the HG552a1, you can skip this step.
Step 7 In the Internet Protocol (TCP/IP) Properties dialog box, click OK. Then in the Local
Area Connection Properties dialog box, click OK.
What can I do if I cannot visit Web sites through the HG552a1?
Step 1 Check whether the POWER indicator of the HG552a1 is on.
If the POWER indicator is off, perform further checks as follows:
1. Ensure that electricity comes from the socket and that the input power of the socket
meets the requirements described on the label of the HG552a1 power adapter. If the
voltage is unsteady, for example, if the voltage is too high or too low, do not use the
HG552a1. Wait until the voltage restores to its normal level, and then use the
HG552a1.
2. Ensure that the HG552a1 is properly connected to the socket through the power
adapter.
If the POWER indicator is still off, contact an authorized maintenance center.
Step 2 After powering on the HG552a1, wait for about three minutes. Then check whether the
DSL indicator of the HG552a1 is on.
If the DSL indicator blinks for a long time, perform further checks as follows:
1. Ensure that telephone lines are properly connected. Especially ensure that the
telephone line connecting to the splitter is properly connected.
2. Ensure that HG552a1 cables or telephone lines are far from the electric appliances
that generate strong magnetic or electric fields.
3. Replace telephone lines.
If the DSL indicator still blinks, contact your network service provider.
Step 3 Check whether the LAN indicator of the HG552a1 is on.
If the LAN indicator is off, perform further checks as follows:
1. Ensure that the network adapter of the computer is enabled.
2. Ensure that the network cable between the HG552a1 and the computer is properly
connected.
3. Remove and then insert the network cable or replace the network cable.
If the LAN indicator is still off, contact an authorized maintenance center.
Step 4 Check whether the driver for the network adapter is properly installed.
Take a computer that runs Windows XP as an example. To check whether the driver for the
network adapter is installed, do as follows:
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1. On the desktop, right-click My Computer and choose Manage.
2. In the navigation tree of the Computer Management window, choose Device
Manager.
3. In the right pane of the Computer Management window, click Network adapters
to view the information about the network adapter of the computer.
If no network adapter is detected or if a question mark (?) or an exclamation mark (!) is displayed
next to the icon of the network adapter, you can infer 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.
For details about how to set the parameters, see the description of the PPP dialing software.
Step 5 Ensure that you have entered the correct user name and user password that are required
by the PPP dialing software.
The user name and the user password are provided by your network service provider.
Step 6 Check whether you can use the PPP dialing software to dial successfully.
If you cannot use the PPP dialing software to dial successfully, perform further checks as follows:
1. Stop the PPP dialing software and then power off the HG552a1. After five minutes,
power on the HG552a1 and use the PPP dialing software to dial again.
2. Restore the default settings of the HG552a1.
If the problem persists, contact your network service provider.
Step 7 Check whether the proxy server of the Web browser is correctly configured. Take the
Internet Explorer installed on a computer that runs Windows XP as an example. To
check whether the proxy server of the Web browser is correctly configured, do as
follows:
1. Start the Internet Explorer.
2. Choose Tools > Internet Options.
3. In the Internet Options dialog box, click the Connections tab.
4. In the Local Area Network (LAN) settings group box, click LAN settings.
5. In the Proxy server group box of the Local Area Network (LAN) Settings dialog
box, ensure that Use a proxy server for your LAN (These settings will not apply
to dial-up or VPN connections) is not selected.
Step 8 Try to access multiple other Web sites to check whether the HG552a1 can access.
If the HG552a1 still cannot access other Web sites, contact your network service provider.
What can I do if the HG552a1 cannot access the Internet through a
wireless network adapter?
Step 1 Ensure that the power cables and telephone lines of the HG552a1 are properly
connected.
Step 2 Check whether the WIFI indicator of the HG552a1 is on.
If the WIFI indicator is off, you can infer that the wireless local area network (WLAN) function of
the HG552a1 is disabled. In this case, enable the WLAN function.
Step 3 See the description of the wireless network adapter that is installed on the computer and
check whether the wireless network adapter supports the 802.11b and 802.11g protocols.
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If the wireless network adapter does not support the 802.11b and 802.11g protocols, replace it with
the network adapter that supports the protocols.
Step 4 Check whether the driver for the wireless network adapter is properly installed on the
computer.
If the driver is improperly installed, install it properly.
Step 5 Check whether the computer can receive the signals of a WLAN.
Take a computer that runs Windows XP as an example. To check whether the computer can
receive the signals of a WLAN, do as follows:
1. In the Control Panel window, double-click Network Connections to display the
Network Connections window.
2. In the Network Connections window, right-click Wireless Network Connection and
choose View Available Wireless Network.
If the computer cannot detect a WLAN, place the computer close to the HG552a1 and ensure that
no obstacles such as cement or wooden walls are present between the wireless client and the
HG552a1.
Step 6 Check whether the computer accesses the WLAN of the HG552a1 successfully.
Check the list of wireless network connections and ensure that the HG552a1 is connected to the
WLAN.
Step 7 Check whether you can use the PPP dialing software to dial successfully.
Step 8 Try to access multiple Web sites to check whether the HG552a1 can access other Web
sites.
If the HG552a1 cannot access other Web sites either, restore the default settings of the HG552a1.
If the problem persists, contact your network service provider.
What can I do if sometimes the HG552a1 cannot access the Internet
through a wireless network adapter or if the WLAN connection is
unsteady?
Step 1 Check the positions of your HG552a1 and computer. Ensure that they are far from the
electric appliances such as microwave ovens, refrigerators, or cordless telephones that
generate strong magnetic or electric fields.
Step 2 Place your HG552a1 in an open position.
Although radio signals can pass through obstacles, the transmission effects of WLAN radio signals
are affected if radio signals pass through too many obstacles such as cement or wooden walls.
Step 3 Place your computer close to your HG552a1.
If your computer is far from your HG552a1, the effects of the WLAN are affected.
Step 4 Place your HG552a1 and computer in another direction.
Step 5 Do not use your HG552a1 to access a WLAN during thunderstorms.
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What can I do if the WLAN of the HG552a1 is not encrypted and the
computer cannot access the WLAN?
Step 1 Delete the settings of wireless network connections from your computer.
Take a computer that runs Windows XP as an example. To delete the settings of wireless network
connections, do as follows:
1. In the Control Panel window, double-click Network Connections to display the
Network Connections window.
2. In the Network Connections window, right-click Wireless Network Connection
and choose Properties.
3. In the Wireless Network Connection Properties dialog box, click the Wireless
Networks tab.
4. In the Preferred Networks group box, select the latest wireless network connection
saved on your computer. Then click Remove.
5. Delete all the other wireless network connections from the Preferred Networks
group box.
6. Click OK.
Step 2 Create a wireless network connection that is not encrypted.
Is there any restriction on the number of the computers that access a
WLAN through wireless network adapters?
Theoretically, the HG552a1 supports hundreds of concurrent computers that access the Internet
through wireless network adapters. In practical applications, for the purposes of the high
performance of a wireless network, the number of the concurrent computers that connect to the
HG552a1 should not exceed five.
What can I do if I cannot access the HG552a1 configuration page?
Step 1 See the answer to 0"What can I do if I cannot visit Web sites through the HG552a1?" and
ensure that the power supply of the HG552a1 works properly and that the telephone lines
and network cables of the HG552a1 are properly connected.
Step 2 Check the IP address of your computer and ensure that this IP address is in the same
network segment as the LAN IP address of the HG552a1.
Step 3 Ensure that your Web browser does not use a proxy server.
Step 4 Ensure that you have entered the correct user name and user password that are used for
accessing the HG552a1 configuration page.
Step 5 If the problem persists, restore the default settings of the HG552a1.
What can I do if Web pages often cannot be displayed during Web page
browsing and can be displayed after the HG552a1 is restarted?
Step 1 Ensure that the HG552a1 and other devices such as telephones or fax machines are
connected to the telephone line through a splitter.
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For details about how to install a splitter, see the related description in the manual.
Step 2 Ensure that telephone lines are properly connected.
If the telephone lines are improperly connected, the stability of the network connection is affected.
Step 3 Check the positions of your HG552a1 and computer. Ensure that they are far from the
electric appliances such as microwave ovens, refrigerators, or cordless telephones that
generate strong magnetic or electric fields.
If the problem persists, contact your service provider.
What can I do if noises exist during telephone calls?
Step 1 Ensure that a splitter is installed.
A splitter helps to protect the call quality of the asymmetric digital subscriber line (ADSL) from
being affected due to the interference of other type of signals.
Step 2 Ensure that telephone lines are properly connected. Especially ensure that the telephone
line connecting to the splitter is properly connected.
Step 3 Replace telephone lines and ensure that the telephone lines are not faulty.
After the HG552a1 is installed, does Internet access degrade call quality
or do telephone calls lower the Internet access rate?
No. The HG552a1 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 at the same time,
without degrading call quality or lowering the Internet access rate.
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HUAWEI TECHNOLOGIES CO., LTD.
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Part Number: 202317
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