OvisLink AIR3G User Manual

AIR3G

W

ireless-N PoE 3G Router

User’s Manual

Copyright and Disclaimer

Copyright & Disclaimer

No part of this publication may be reproduced in any form or by any means, whether
electronic, mechanical, photocopying, or recording without the written consent of OvisLink
Corp.

OvisLink Corp. has made the best effort to ensure the accuracy of the information in this
user’s guide. However, we are not liable for the inaccuracies or errors in this guide.
Please use with caution. All information is subject to change without notice

All Trademarks are properties of their respective holders.

AirLive AIR3G User’s Manual

Table of Contents

FCC Statement

Federal Communication Commission Interference Statement This equipment has been
tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of
the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one of the
following measures:

z Reorient or relocate the receiving antenna.
z Increase the separation between the equipment and receiver.
z Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

z Consult the dealer or an experienced radio/TV technician for help.

FCC Caution

Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation. For product available in the USA/Canada market, only channel 1~11 can be
operated. Selection of other channels is not possible.

This device and its antenna(s) must not be co-located or operation in conjunction with any
other antenna or transmitter.

IMPORTANT NOTE

FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance
20cm between the radiator & your body.

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ii

Table of Contents

Table of Contents

1. Introduction................................................................................................1

1.1 Overview..............................................................................................1

1.2 Firmware Upgrade and Tech Support..................................................2

1.3 Features...............................................................................................2

1.4 Operation Modes .................................................................................3

1.4.1 3G Router Mode ........................................................................................................3

1.4.2 AP mode.....................................................................................................................4

1.4.3 Client Mode ...............................................................................................................4

1.4.4 WDS Bridge Mode ....................................................................................................5

1.4.5 WDS Repeater Mode .................................................................................................5

1.5 Hotspot Authentication.........................................................................6

2. Installing the Air3G....................................................................................8

2.1 Before You Start...................................................................................8

2.2 Package Content .................................................................................8

2.3 Knowing your Air3G.............................................................................9

2.4 Hardware Installation.........................................................................10

2.4.1 Passive PoE Installation...........................................................................................11

2.4.2 Wall Mount Installation ...........................................................................................12

2.5 LED Table ..........................................................................................13

2.6 Restore Settings to Default................................................................13

3. Configuring the Air3G .............................................................................14

3.1 Important Information......................................................................14

3.2 Prepare your PC .............................................................................14

3.3 Introduction to Web Management...................................................15

3.3.1 Getting into Web Management ................................................................................15

3.3.2 Web Menu Structure ................................................................................................16

3.4 Configuration Wizard.......................................................................17

3.5 Change Operation Mode.................................................................19

3.6 Change Regulatory Domain............................................................20

3.7 WPS (WiFi Protected Setup)...........................................................20

3.7.1 AP and 3G Router Modes..................................................................................21

3.7.2 Client Mode .......................................................................................................23

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4. Configuration: 3G Router Mode ...........................................................25

4.1 Application for 3G Router Mode.........................................................25

4.2 Internet Setting Menu.........................................................................26

4.2.1 Setup Wizard............................................................................................................26

4.2.2 WAN Setting............................................................................................................28

4.2.3 Hotspot.....................................................................................................................31

4.2.4 V irtual Server...........................................................................................................31

4.2.5 DMZ.........................................................................................................................32

4.2.6 URL Filtering...........................................................................................................33

4.2.7 MAC Filtering..........................................................................................................33

4.2.8 IP Filtering...............................................................................................................34

4.2.9 DDNS.......................................................................................................................34

4.2.10 Static Route............................................................................................................35

4.3 Hotspot Authentication.......................................................................35

4.4 Connection Auto Backup Function.....................................................37

4.5 Wireless Settings Menu.....................................................................38

4.5.1 Regulatory Domain..................................................................................................39

4.5.2 Multiple SSID..........................................................................................................39

4.5.3 Channel....................................................................................................................40

4.5.4 Wireless Security .....................................................................................................40

4.5.5 Access Control .........................................................................................................41

4.5.6 Bandwidth Control...................................................................................................42

4.5.7 Associated Client .....................................................................................................43

4.5.8 Advanced Settings....................................................................................................43

4.5.9 WMM Settings.........................................................................................................45

4.5.10 WDS Settings (Repeater).......................................................................................48

4.5.11 WPS Settings..........................................................................................................49

5. System Configuration and Status Menu................................................51

5.1 Menu Structure ..................................................................................51

5.2 LAN Interface Setup ..........................................................................52

5.2.1 DHCP Settings.........................................................................................................52

5.2.2 Add DHCP Static Lease Client................................................................................53

5.3 Time Settings.....................................................................................53

5.4 Password Settings.............................................................................54

5.5 Power Saving (Green AP)..................................................................54

5.6 Firmware Upgrade.............................................................................55

5.7 Configuration Save and Restore........................................................56

5.8 Factory Default ..................................................................................56

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Table of Contents

5.9 Status Menu.......................................................................................56

5.9.1 Device Information..................................................................................................56

5.9.2 Statistic.....................................................................................................................57

5.9.3 Client Table..............................................................................................................57

5.9.4 LOG .........................................................................................................................58

6. AP Mode....................................................................................................59

6.1 Application for AP Mode.....................................................................59

6.2 Wireless Settings...............................................................................59

6.2.1 Regulatory Domain..................................................................................................60

6.2.2 Multiple SSID..........................................................................................................60

6.2.3 Channel....................................................................................................................61

6.2.4 Wireless Security .....................................................................................................61

6.2.5 Access Control .........................................................................................................62

6.2.6 Associated Client .....................................................................................................63

6.2.7 Advanced Settings....................................................................................................63

6.2.8 WMM Settings.........................................................................................................65

6.2.9 WDS Settings (Repeater).........................................................................................68

6.2.10 WPS Settings .........................................................................................................69

7. Client Mode...............................................................................................71

7.1 Application for Client Mode................................................................71

7.2 Wireless Settings...............................................................................71

7.2.1 Regulatory Domain..................................................................................................72

7.2.2 Profile Setting ..........................................................................................................72

7.2.3 Site Survey...............................................................................................................73

7.2.4 Advance Settings......................................................................................................74

7.2.5 WPS Settings ...........................................................................................................75

8. WDS Bridge Mode....................................................................................78

8.1 Application for WDS Bridge Mode......................................................78

8.2 Wireless Settings...............................................................................78

8.2.1 Regulatory Domain..................................................................................................79

8.2.2 Advance Setup .........................................................................................................79

8.2.3 WDS Settings...........................................................................................................81

9. Emergency Firmware Recovery .............................................................83

10. Frequent Asked Questions ...................................................................85

11. Specifications.........................................................................................87

11.1 Hardware Features ..........................................................................87

11.1.1 General Hardware Feature.....................................................................................87

11.1.2 Power Supply.........................................................................................................87

11.1.3 Dimension and Weight...........................................................................................87

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11.2 Radio Specifications.........................................................................88

11.2.1 Frequency Band.....................................................................................................88

11.2.2 Rate and Modulation..............................................................................................88

11.2.3 TX Output Power...................................................................................................88

11.2.4 Receiver Sensitivity...............................................................................................89

11.2.5 Supported WLAN Mode........................................................................................89

11.3 Software Features............................................................................89

12. Wireless Network Glossary...................................................................91

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1. Introduction

1. Introduction

1

1.1 Overview

The Air3G is a wireless multi-function router based on 150Mbps wireless-b/g/n 2.4GHz
radio technologies. Users can share a wireless 3G/3.5G USB modem or xDSL cable
modem internet connection at high speed. It also provides to 4 operation modes to satisfy
different application environments. In addition, it features passive PoE port for installations
in places that have no nearby access to electricity. Please take notice of the following
features:

 This product does not come with 3G modem. It works with your 3G USB dongle. For latest

3G USB dongle support list, please visit our website at
the product search.

 The Air3G is not just a 3G sharing router. It can also share other broadband connections from

xDSL modem, ADSL modem, or Cable modem.

 The Air3G can support 12V on its p assive PoE port. You will need to purchase a passive PoE

Injector (PoE-1P) separately. For more information, please read section 2.4.1.

 The maximum output power for Air3G is about 1watt(30dBm). However, it is limited to 20dBm

in EU and 23dBm in the U.S. for compliance with regulations. Nevertheless, unlike normal
11n routers that typically provide less than 15dBm output power in 11n mode, the Air3G can
provides up to 19dBm(EU) and 22dBm(FCC) in 11n mode. It means greater coverage in 11n
mode. Despite of Air3G’s capability, we strongly recommend that you use as little power as
possible to reduce interference and conserve energy.

If you encounter any technical issues, we strongly recommend you read through Chapter
10: Frequent Asked Questions. The answers you need are very likely to be there.

www.airlive.com and type “Air3G” on

1 AirLive AIR3G User’s Manual

1. Introduction

1.2 Firmware Upgrade and Tech Support

If you encounter a technical issue that can not be resolved by information on this guide, we
recommend that you visit our comprehensive website support at www.airlive.com. The
tech support FAQ are frequently updated with latest information.

In addition, you might find new firmwares that either increase software functions or provide
bug fixes for Air3G. You can reach our on-line support center at the following link:
http://www.airlive.com/support/support_2.jsp

Since 2009, AirLive has added the “Newsletter Instant Support System” on our website.
AirLive Newsletter subscribers receives instant email notifications when there are new
download or tech support FAQ updates for their subscribed airlive models. To become an
AirLive newsletter member, please visit:

http://www.airlive.com/member/member_3.jsp

1.3 Features

 Wireless-N 3G Router
 Up to 30dBm Output Power (20dBm in EU, 23 dBm in the U.S.)
 Work with 3G/3.5G/UMTS/EVDO/HSDPA USB Dongle
 1 x USB 2.0 Port
 7 LED indicators
 Hotspot authentication function
 150Mbps 1T1R Wireless-b/g/n standard

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 12V Passive POE Port
 WAN port for ADSL/Cable Modem support
 WAN/3G Connection Auto-Backup
 3G Router, AP, Client, Bridge, Repeater modes
 Bandwidth Control
 8MB Flash, 32MB SDRAM
 Green AP energy saving function
 Wall Mount Screw Holes
 Emergency firmware recovery mode

1.4 Operation Modes

1. Introduction

The Air3G can perform as a multi-function wireless device. Through the AirLogic web
interface, users can easily select which wireless mode they wish the Air3G to perform.

The Air3G can be configured to operate in the following wireless operation modes:

Air3G Wireless Operation Mode

Wireless

Radio WAN Application

Mode

3G only 3G Internet Sharing
WAN only xDSL/Cable Broadband Sharing

3G as primary connection,
Broadband as backup connection

3G Router AP

3G with WAN backup

Broadband as primary

WAN with 3G backup

connection, 3G as backup
connection.

AP AP none

Hotspot only or extend distance

of another WDS AP/Router
Client Client none Connect to AP Router
WDS Bridge WDS none Create a backbone connection

Extend the wireless signal. WDS
WDS
Repeater

AP + WDS N/A

Repeater setting is inside the

“Wireless Settings” of 3G Router

mode and AP Mode.

1.4.1 3G Router Mode

In this mode, you can share your 3G Internet connection and/or broadband connection. If
you do not have a 3G USB dongle, you can still share your ADSL modem, xDSL mdoem, or
Cable Modem connections. If you have both 3G and Broadband, you can use both for
connection backup.

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1. Introduction

1.4.2 AP mode

When operating in the Access Point mode, the Air3G becomes the center hub of the
wireless network. All wireless cards and clients connect and communicate through Air3G.
This type of network is known as “Infrastructure network”. Other Air3G or 802.11 b/g/n
devices can connect to AP mode through Client Mode.

1.4.3 Client Mode

The Air3G acts as if it is a wireless adapter to connect with a remote Access Point. Users
can attach a computer or a router to the LAN port of Air3G to get network access.

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1. Introduction

1.4.4 WDS Bridge Mode

This mode is best used when you want to connect LAN networks together wirelessly (for
example, between office and warehouse). WDS Bridge using WPA-PSK or WPA2-PSK
encryptions might be limited to devices using the same wireless chipset.

WDS Bridge works by entering remote Bridge’s wireless MAC address on the WDS table.
You can find the MAC address on the bottom label of the Air3G.

1.4.5 WDS Repeater Mode

The purpose of repeater is to extend the wireless signal of the remote AP/Router. In Air3G,

the AP mode and the 3G Router mode also turn ito “WDS Repeater mode.” Y ou can find the
WDS settings in the “Wireless Settings” page.

to work.

WDS Repeater in 3G Router Mode

The WDS Repeater function in 3G Router mode is to allow the remote AP to extend the
wireless signal of Air3G. Please see the diagram below:

Both sides must support WDS connection

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1. Introduction

WDS Repeater in AP Mode

The WDS Repeater function in AP mode is to extend the wireless signal of remote AP.
Please see the diagram below for details:

For information on how to configuration WDS Repeater, please go to section 4.6 or section

6.3.

1.5 Hotspot Authentication

The Air3G features basic Hotspot Authentication function. Hotspot authentication enables
the administrator to manage Internet Access by username and password.

authentication function for Air3G is only suitable for small scale hotspot service like in the
coffee shop. For larger installation, it is recommended to use a dedicated hotspot gateway
like the AirLive WIAS-1200G.

For configuration procedures, please go to section 4.3.

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The hotspot

1. Introduction

7 AirLive AIR3G User’s Manual

2. Install the AIR3G

2. Installing the Air3G

2

This section describes the hardware features and the hardware installation procedure for
the Air3G. For software configuration, please go to chapter 3 for more details.

2.1 Before You Start

It is important to read through this section before you install the Air3G

 This product does not come with 3G modem. It works with your 3G USB dongle.

For latest 3G USB dongle support list, please visit our website at www.airlive.com

 The LAN1 port also work as the passive POE port
 The passive PoE DC Injector is optional; it is not included with the package.

Please use a 12V passive POE system with Air3G’s passive POE port. Do not
use 802.3af 48V system or PoE switch with this device.

 When you use Passive PoE with 3G USB installed, it is recommend to use a

power adapter of 12Vdc at 1.25A or greater.

 To protect the Air3G USB port from damage, please turn off the power when

plugging in or pulling out USB device from the USB port.

2.2 Package Content

The Air3G package contains the following items:

 One Air3G main unit

One 12V 1A DC power adapter



1 x Antenna



User’s Guide CD



Quick Start Guide



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2.3 Knowing your Air3G

Below are descriptions and diagrams of the product:

2. Install the AIR3G

1

6

5

7

3

2

4

Antenna Connector

1

Power Adapter Connector

2

WAN Port

3

LAN Ports (LAN1 for Passive PoE Port)

4

5

Reset Button

6

WPS Button

7

USB Port (For 3G Dongle Use)

8

LED Indicators

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2.4 Hardware Installation

.1. Please install the antennas by turning clock wise into the RF antenna connectors

2. Install the AIR3G

2. Now connect the power adapter to the Air3G

3. Connect the Ethernet cable to one of the LAN port and the other end to your PC.

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2. Install the AIR3G

4. If you have broadband connection, please connect the Internet cable to “WAN port”.

2.4.1 Passive PoE Installation

If you want to supply the power by using Passive PoE, please follow the installation
diagram below. Please note that the passive DC Injector is not included with Air3G, it
needs to be purchased separately (AirLive Model: PoE-1P). Air3G uses 12V passive PoE
system. it is recommend to use a power adapter of 12Vdc at 1.25A or greater if you have
the USB dongle installed.

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2. Install the AIR3G

2.4.2 Wall Mount Installation

1. The holes for the wall mount screw are on the underside of the case. Please measure the

distance between the holes. Then install 2 screws in the desire location with the measured
distance apart from each other. Please do not screw all the way in, leave some space for
mounting with the Air3G

2. Now please hang the Air3G on those 2 screws.

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2. Install the AIR3G

2.5 LED Table

This section describes the LED behavior of Air3G. You can find the LED on the top side of
the Air3G.

WPS (Power)

Steady Blue – Normal Operation
Slow Flashing: WPS Surveying
OFF – No Power

WLAN

Slow Flashing : Radio is active
Fast Flashing: Transmitting Data

OFF: Radio Disabled

LAN1 ~4, WAN

Steady Blue : Link established
Fast Flashing: Transmitting Data

OFF: No Link

2.6 Restore Settings to Default

If you have forgotten your Air3G’s IP address or password, you can restore your Air3G to
the default settings by pressing on the “reset button” for more than 10 seconds. You might
need a pen or pencil for this operation. The reset button is inside the bottom case.
Please see diagram below for details.

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3. Configuring the Air3G

3. Configuring the Air3G

3

The Air3G offers web browser (http) as management interface. In this chapter, we will
explain Air3G’s management interface and how to get into them.

3.1 Important Information

The following information will help you to get start quickly. However, we recommend you
to read through the entire manual before you start. Please note the password and SSID
are case sensitive.

 The default IP address is: 192.168.1.254 Subnet Mask: 255.255.255.0
 The default Account is “admin”
 The default Password is “airlive”
 The default SSID is “airlive”
 The default wireless mode is : 3G Router mode
 Please remember to “Apply Change” for settings to be saved and take effect.
 Please remember to “Reboot” the device after all settings are changed.
 The Emergency Firmware Recovery only works when you connect to LAN1~4
 By Default, the DHCP server is turned on in 3G Router mode. The other modes’

DHCP servers are turned off. Therefore, if you switch from 3G Router mode to
other modes, please remember to configure your PC’s IP address manually.

 The default regulatory domain is “ETSI” for Europe. If you are not living in EU

countries, you might wish to change the regulatory domain. However, please do
not choose regulatory domain that does not apply to your country. Using wrong
regulatory domain might be illegal.

.

3.2 Prepare your PC

The Air3G can be managed remotely by a PC through either the wired or wireless network.
The default IP address of the Air3G is 192.168.1.254 with a subnet mask of 255.255.255.0.
This means the IP address of the PC should be in the range of 192.168.1.1` to

192.168.1.253.

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3. Configuring the Air3G

To prepare your PC for management with the Air3G, please do the following:

1. Connect your PC directly to the LAN port on the DC Injector of Air3G

2. Set your PC’s IP address to “Obtain an IP address Automatically”. The Air3G should

provide your PC an valid IP address.

3. If you want to set your PC’s IP address manually, please set to 192.168.1.50 (or other
address in the same subnet)

50

You are ready now to configure the Air3G using your PC.

3.3 Introduction to Web Management

The Air3G can be configured using the Web management interfaces by simply typing its IP
address in the web browser. Most functions of Air3G can be accessed by it.

If you are placing the Air3G behind router or firewall, you might need to open the port 80 at
virtual server on your firewall/router. This procedure is not necessary in most cases
unless there is a router/firewall between your PC and Air3G.

3.3.1 Getting into Web Management

To get into the Normal Web Management, simply type in the Air3G’s IP address (default IP
is 192.168.1.254) into the web browser’s address field.

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3. Configuring the Air3G

3.3.2 Web Menu Structure

We recommend users to browse through Air3G’s web management interface to get an
overall picture of the functions and interface.

After you enter the Web configuration, the following screen will appear:

Internet Settings

Language Selection

 Internet Settings: When you choose 3G Router mode, the “Internet Settings”

bottom will be shown and you will be able to configure internet related functions
here. This menu will disappear when you switch to other wireless mode.

 Wireless Settings: The Air3G’s wireless settings are different between wireless

modes. Only functions that are applicable to the wireless mode will show to
simplify configuration. You can also change the operation mode from this menu.
For explanation of different wireless modes, please refer to Chapter 1.

 System Configuration: All non-wireless and router mode settings are in this

category. The system configurations including changing password, upload
firmware, backup configuration..

 Status: This section for monitoring the status of Air3G. It provides information on

Device Information, Statistic, Client table, and Log.

 Reboot: Most of settings will require to click the “Reboot” bottom to take effect the

settings you applied.

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3. Configuring the Air3G

 Language Selection: You can change the language for the Web interface from

here.

3.4 Configuration Wizard

The configuration Wizard is the first screen you will see after you login. It will ask you a
few questions to setup your wireless and 3G broadband connection quickly.

Step 1: Please enter your own SSID and Encryption Key. The default encryption type is

WPA2-PSK(AES). The encryption key should be at least 8 alphanumeric
characters.

Step 2: Choose an internet connection type you need.

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3. Configuring the Air3G

Step 3: Configure the 3G function if you have select 3G related connection types.

Please make sure you have already plugin the 3G USB dongle. Now, select
your country and 3G operator. If it is not on the list, please choose “others”
and enter the information manually.

Step 4: If you have chosen WAN related connection type, the setup wizard will ask you to

enter the WAN information. If you are not sure about setup information, please
ask your ISP for parameters.

Step 5 : Please click “Finish” to reboot the system if you are sure about all settings.

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3.5 Change Operation Mode

3. Configuring the Air3G

The wireless settings of Air3G are dependant on the wireless operation mode you choose.
For explanation on when to use what operation mode, please refer to Chapter 1

Changing Mode Procedure:

1. Select “Wireless Setting”

2. Choose your required wireless mode.

3. The AP might ask you to confirm the mode change. Once confirm, the AP will reboot to

its new mode.

Note: When you change from 3G Router mode to other modes, the DHCP server will be turned off.

In this case, you must manually configure your PC’s IP address to the same subnet as the

Air3G. Likewise, when you change from other modes to 3G Router mode, the DHCP server will be

turned on.

Mode Change

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3. Configuring the Air3G

3.6 Change Regulatory Domain

The Regulatory Domain settings will decide what channels and output power are available
for your Air3G. You must choose the correct Regulatory Domain for your country. Using
the incorrect Regulatory Domain might be illegal. Please check the summary table below.

If you are unsure about what Regulatory Domain to use, please use “ETSI(Europe)” and
restrict yourself to use only Channel 1 to 11.

Regulatory Domain Table

Domain Channels Maximum Tx Output

Power

ETSI (Europe) 1~13 20dBm EU countries
FCC(United States) 1~11 23dBm The United States and other

South America
(11ch)

South America
(14ch)

1~11 30dBm South American countries that

1~14 30dBm South American countries that

Countries

countries that use U.S.A
regulation for WiFi

follow channels of FCC domain.

allow use of all channels in

2.4GHz.

The default Regulatory domain is ETSI(Europe). If you need to change the Regulatory
Domain, please go to “Wireless Settings”->”Regulatory Domain” menu. After changing
the Regulatory Domain, the device will reboot to the new settings.

3.7 WPS (WiFi Protected Setup)

WPS is a system that simplifies the process to established wireless security. There are two
ways to configure WPS connection:

1. PBC (Push Button Communication) using hardware or software:
Push WPS buttons on both AP and Client site, the WPS connection will connect
automatically. You can find Air3G’s WPS Push button on the back of the router.

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3. Configuring the Air3G

2. PIN (Personal Information Number) Enrollee and Registrar:
WPS Registrar site should be entered the PIN Code from Enrollee site, the WPS
connection will connect automatically.

It is recommended to use the first option as it is much simpler to configure.

3.7.1 AP and 3G Router Modes

Example1: Using Hardware Push button

Please push WPS button directly on the back of the Air3G. The “WPS” LED flash will light
and the Air3G will start to survey the client’s WPS signal in the current environment. Please
be noticed that, within two minutes, you have to turn on the utility of your wireless network
card and click PBC to connect automatically.

If you also have a hardware WPS button on your wireless card, you can push the button
immediately now. If not, you can usually find the WPS PBC function in the wireless utility.
Below is an example using AirLive WN-360USB wireless network card to connect with
Air3G.

6

7

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3. Configuring the Air3G

Example 2: WPS Using PIN

Please login Air3G’s Web UI. Select Wireless Setting Æ WPS Setting. In the WPS
Progress, select “PIN” then “Apply.” You will get a PIN Code.

PIN Code

1

2

Then, please turn on the utility of your wireless network card. Choose WPS mode to
“Registrar” and enter the PIN Code. Press “PIN” and the connection will automatically
configure.

3

6

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5

4

22

3. Configuring the Air3G

3.7.2 Client Mode

Example 1: Using WPS hardware button

Please push WPS button directly on the back of the device. The “WPS” LED flash will light
and the Air3G will start to survey the AP’s WPS signal in the current environment.

Within two minutes, please push WPS button on your AP device, the connection will
automatic successfully.

Example 2: WPS using PIN

Please login Air3G’s Web UI. Select Wireless Setting Æ change to Client mode Æ Client
WPS Setting.

1

2

3

Select the SSID that you want to connect. Choose WPS mode to “Enrollee” and get a PIN
Code in the field. Then press “PIN Start” and the “WPS” LED flash will light two minutes
on the device’s housing.

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3. Configuring the Air3G

4

5

6

Copy PIN Code

7

Under AP site, Select Wireless Setting Æ WPS Setting. Choose WPS mode to “PIN” then
enter the PIN Code Æ click “Apply” and the connection will automatically configure.

8

Enter PIN Code

10

10

9

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24

4. Configuration: 3G Router Mode

4. Configuration: 3G

4

In this chapter, we will explain about the wireless settings for 3G Router Mode. Please be
sure to read through Chapter 1.5 and Chapter 3’s “Introduction to Web Management”.

Router Mode

4.1 Application for 3G Router Mode

The 3G router mode is the main operation mode of the Air3G. This mode is more than just
sharing 3G Internet connection. If you do not have a 3G USB dongle, you can still share
your ADSL modem, xDSL modem, or Cable Modem connections. If you have both 3G
and Broadband, you can use both for connection backup.

Due to Air3G’s wider coverage and Hotspot Authentication function, it is also suitable to
resell the Internet bandwidth. In addition, with the optional CAR-100DC car adapter, the
Air3G can be used to provide Internet access on public transportations.

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4. Configuration: 3G Router Mode

4.2 Internet Setting Menu

The Internet Setting Menu is the first menu you will see after login to Air3G. All WAN
related configurations can be found here. This menu will not appear in any other modes.

4.2.1 Setup Wizard

The configuration Wizard is the first screen you will see after you login. It will ask you a
few questions to setup your wireless and 3G broadband connection quickly.

Step 1: Please enter your own SSID and Encryption Key. The default encryption type is

WPA2-PSK(AES). The encryption key should be at least 8 alphanumeric
characters.

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26

Step 2: Choose an internet connection type you need.

4. Configuration: 3G Router Mode

Step 3: Configure the 3G function if you have select 3G related connection types.

Please make sure you have already plugin the 3G USB dongle. Now, select
your country and 3G operator. If it is not on the list, please choose “others”
and enter the information manually.

Step 4: If you have chosen WAN related connection type, the setup wizard will ask you to

enter the WAN information. If you are not sure about setup information, please
ask your ISP for parameters.

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4. Configuration: 3G Router Mode

Step 5: Please click “Finish” to reboot the system if you are sure about all settings.

4.2.2 WAN Setting

Internet Settings -> WAN Settings

The Air3G provides four types of WAN connections, 3G Only, WAN Only, WAN with 3G
Back up and 3G with WAN Back up. Please see the table below for details:

Internet Source table

Internet Source Application

3G only Sharing 3G Internet Connection from the USB
WAN only xDSL/Cable Broadband Sharing from WAN port

3G with WAN backup

WAN with 3G backup

3G as primary connection, Broadband as backup
connection

Broadband as primary connection, 3G as backup
connection.

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28

4. Configuration: 3G Router Mode

 3G Configuration: Click here to configure the 3G function
 WAN Configuration: Click here to Configure WAN port related function
 Enable Auto Switch Backup: Check this box to enable the Air3G to switch from

secondary connection back to primary connection if the primary connection is back
online. For example, if you choose “WAN with 3G Backup” as Internet Source.
When this option is enabled, in the event of WAN failure and switched to 3G
connection, the Air3G will monitor whether WAN is back online. If yes, then it will
switch back to the WAN connection.

the Air3G will reboot. It might cause temporarily service disruption.

Please note that during the connection switch,

For more

information about this subject. Please read section 4.4 in this chapter.

 Enable UPnP: Enable universal plug and play
 Enable Response to PING: Please enable this if you want Air3G to response to

remote PING command

 Enable Remote Management: Enable this option for remote access of the web

management interface.

 Enable VPN Pass Through: If you have VPN servers in your local area network, you

need to turn on the VPN pass through to allow remote access to the VPN networks.

3G Configurations

The 3G configuration features a setup wizard that allows you to select your country and
service provider. If your country is not on the list or if the setup wizard information is

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4. Configuration: 3G Router Mode

outdated; please select “others” as country and enter the information manually. Please
ask your service provider for the setup parameters if you are not sure what to enter.

 Service Name: The service name of service provider
 Dial Number: The AT dial command to connect with your 3G service
 PIN Code: The identification code required to access your 3G USB dongle
 Authentication: Check this box if your service provider require username and

password

 MTU Value: Maximum transmission unit. Please use default value unless your ISP

has special setting.

 Operation Mode

 Keep Alive: The 3G connection will auto reconnect if disconnection detect.
 On demand: The 3G connection will reconnect only if there is a request from

PC.

WAN Configurations

If you have xDSL or Cable Modem service, you can attach the internet connection to the
WAN port. Then configure the settings accordingly.

The Air3G supports different authentication and IP assignment standards for the WAN port.
It includes fixed IP, DHCP, PPPoE, PPTP, L2TP, and Big Pond protocols. Please consult
with your ISP about what authentication type is used for the WAN port connection.

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4. Configuration: 3G Router Mode

 Clone MAC Address: In this place, you can assign a MAC address for the WAN

port. In case of WISP mode, it is Radio1’s MAC address. For Gatway mode, it
is the WAN/LAN1 MAC address.

4.2.3 Hotspot

Internet Settings -> Hotspot

Please go to

section 4.3 for details on Hotspot Authentication function.

4.2.4 Virtual Server

Internet Settings -> Virtual Server

Virtual server allows you to specify one or more applications running on server computers
on the LAN that may be accessed by any Internet user. Internet data destined for the
specified public port will be directed to the specified private port number on the LAN client
with the specified private IP address.

If you want to allow your web server, ftp server, or email server to be accessible from
Internet, you would need to open specific port on the virtual server to your local IP address.

The Air3G feature “Copy PC” and “Pre-defined” services to simply the process of creating
virtual server.

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4. Configuration: 3G Router Mode

Example1: Open FTP service to your PC

6. Step 1: Enable the Virtual Server function

7. Step 2: Click on “Copy PC” icon to copy the IP address of your PC.

8. Step 3: Click on “Pre-Define” for a list of popular service and select “FTP”.

9. Step 4: Click on “Apply” and the new virtual server should appear on table list.

For a list of most frequent used TCP and UDP ports. Please visit

http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

4.2.5 DMZ

Internet Settings -> DMZ

DMZ opens all TCP/UDP ports to particular IP address on the LAN side. It is used mostly
for setting gaming servers behind the Air3G.

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32

4. Configuration: 3G Router Mode

4.2.6 URL Filtering

Internet Settings -> URL Filtering
The Air3G provide URL filter function to stop access to certain website. It is useful for

parents to stop children from accessing some websites.

4.2.7 MAC Filtering

Internet Settings -> MAC Filtering

MAC filter can filter out traffic from certain MAC addresses. It can prevent access to
internet from certain stations in the local LAN. Please enter the MAC address in
XX-XX-XX-XX-XX format. For example: 00-4F-66-11-22-33

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4. Configuration: 3G Router Mode

4.2.8 IP Filtering

Internet Settings -> IP Filtering

IP filtering allows you to block certain IP addresses from accessing the network.

4.2.9 DDNS

Internet Settings -> DDNS

Dynamic Domain Name System. An algorithm that allows the use of dynamic IP address
for hosting Internet Server. A DDNS service provides each user account with a domain
name. The AIR3G support “Dyndns.org”, “zoneedit.com” and “no-ip.com” service.

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4.2.10 Static Route

Internet Settings -> Static Route
Static Route allows you to setup the routing table manually.

4. Configuration: 3G Router Mode

4.3 Hotspot Authentication

Hotspot authentication enables the administrator to manage Internet Access by username
and password. When hotspot authentication is enabled, PCs that are connected to
G.DUO will get a Pop-Up win dow when they try to access the Internet. They must enter
correct username and password to access Internet. Please see diagram below.

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4. Configuration: 3G Router Mode

To configure Hotspot Authentication function, please go to Internet Settings-> Hotspot
menu. The following screen will appear:

 Hotspot Authentication: Enable your hotspot Authentication here. You must

click on “Apply Change” to take effect.

 Limit to one user per account: If you want to each user must have its own

account. Please check this box. You must click on “Apply Change” to take
effect.

 Account Idle Timeout: After the period of inactivity, the Air3G will log out the

user. Please enter zero if you don’t want the account every expired. You must
click on “Apply Change” to take effect.

 Create Accounts: Please enter the “Username” and “Password”, then click on

“Add” to create an account.

 Account Table: This field will display the information about accounts. You can

modify the username/password directly on the table cell then click on the “Modify”
button. The “Last Login Traffic” shows the data transmitted during the last login
session.

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4.4 Connection Auto Backup Function

Internet Settings -> WAN Settings

4. Configuration: 3G Router Mode

When you select “WAN with 3G backup” or “3G with WAN Backup” as your Internet source,
you will enable Air3G’s connection backup function. It means the Air3G will do fail over
between your 2 Internet source. In the example of “WAN with 3G backup”; the WAN is the
“Primary Connection” and the “3G” is the “Secondary Connection”. When the primary
connection failed, the Air3G will switch to secondary connection.

Internet Source table

Internet Source Application

3G with WAN backup

WAN with 3G backup

3G as primary connection, Broadband as backup
connection

Broadband as primary connection, 3G as backup
connection.

When you select either of the 2 settings, the following screen will appear:

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4. Configuration: 3G Router Mode

Enable Auto Switch Backup

Check this box to enable the Air3G to switch from secondary connection back to primary
connection if the primary connection is back online.

For example, if you choose “WAN with 3G Backup” as Internet Source. When this option
is enabled, in the event of WAN failure and switched to 3G connection, the Air3G will
monitor whether WAN is back online. If yes, then it will switch back to the WAN
connection. Please note that during the connection switch, the Air3G will reboot. It might

cause temporarily service disruption.

 Polling IP: This is the IP address for which the function will ping to monitor whether the

primary connection is back online. The Air3G will ping this IP about once per minute.

 Polling Tries: How many successful PINGs to the Polling IP are needed before Air3G

decides the primary connection is back online.

Once the primary connection is back on line, the Air3G will reboot back to the primary
connection after about 5 minutes.

4.5 Wireless Settings Menu

When you select “Wireless Settings” on the top menu; the following screen will appear:

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38

4. Configuration: 3G Router Mode

4.5.1 Regulatory Domain

Wireless Settings -> Regulatory Domain

The Regulatory Domain decides what channels and Tx output power levels are available
for your country. In most cases, the Regulatory Domain is already selected correctly for
your country. Please note that using the wrong Regulatory Domain is strictly prohibited.
If you live inside EU, you must use the ETSI Regulatory Domain. If you live in United
States, you must use FCC domain.

The Air3G is available with the following Regulatory Domain:

Regulatory Domain Available

Maximum Tx Output Power

Channels

ETSI (Europe) 1 ~13 20dBm
FCC (United States) 1~11 23dBm
South America(11 CH) 1~11 30dBm
South America(14 CH) 1~14 30dBm

4.5.2 Multiple SSID

Wireless Settings -> Multiple SSID

Multiple SSID allows Air3G to create up to 4 different wireless networks (SSID). It is also
known as “Virtual AP” function. Each SSID can have its Encryption policy. The SSID1 is
the main SSID under Wireless Setting page.

 Hide SSID: The wireless network will become invisible, only accessible to people who

knows the SSID name.

 Enable Isolation between SSIDs: Enable this option will disable traffic between

different SSIDs.

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4. Configuration: 3G Router Mode

4.5.3 Channel

Wireless Settings -> Channel

The channel is the frequency range used by radio. In 802.11g/b standard, there are
maximum of 14 Channels. However, the available channels in each country are
dependant on the local regulation. If you are living in Europe, you can use channel 1 to 13.
If you are living in the United States, you can use channel 1 to 11.

Each wireless channel takes between 22 to 25MHz of frequency width. But the channels
are only 5MHz apart. Therefore, only every 5 channels can be free of interference with
each other. It is recommended that you can do a site survey to find about what channels
are used by surrounding AP and choose a channel that is not used by other APs.

4.5.4 Wireless Security

Wireless Settings -> Wireless Security

You should set up the wireless security immediately to ensure the security of your data
transmission and to prevent the unauthorized access. The easiest way to setup encryption

is to use the “Setup Wizard”. It automatically chooses the most secured and easiest
scheme for your wireless security settings

encryption scheme, the Air3G offers various type of encryption including WEP, WPA-PSK,
WPA, WPA2, WPA2-PSK encryptions method. In general, the WPA-PSK and WPA2-PSK
are the most popular and secured encryption scheme.

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. However, if you wish to choose your own

40

Procedure to make encryption

4. Configuration: 3G Router Mode

 Step1: Select your SSID: If you have enabled the “Multiple SSID” function, there will

be more than one SSID to choose from. Each SSID(Virtual AP) can have its own
security policy.

 Step2: Select Security Policy: Air3G offers a full suite of security policy including

WEP(Pre-Shared Key), WPA(certificate), WPA-PSK(AES), WPA2-PSK(AES), and

802.1x Radius Authentication. Recently WiFi regulation prevent the use of TKIP
encryption in 11n mode. Therefore, the TKIP is only available in 11b/g mode. We

highly recommend using WPA2-PSK AES Encryption as the easiest and very
secured scheme for encryption.

4.5.5 Access Control

Wireless Settings -> Access Control

The Air3G allows you to define a list of MAC addresses that are allowed or denied to
access the wireless network. This function is available only for Access Point and AP
Router modes. This function is available only for Access Point and Gateway modes.

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4. Configuration: 3G Router Mode

 Disable: When selected, no MAC address filtering will be performed.


Allow list: When selected, data traffic from only the specified devices in the
table will be allowed in the network.



Deny list: When selected, data traffic from the devices specified in the table
will be denied/discarded by the network.

4.5.6 Bandwidth Control

Wireless Settings -> Bandwidth Control

The Air3G can limit the bandwidth by IP address or MAC address. Please first enable the
Bandwidth Control, then select IP Control or MAC Control.

 Enable Bandwidth Control: Check this box and press “Apply Change” to

enable bandwidth control

 IP Control: To limit the bandwidth of one single IP address.
 MAC Control: To limit the bandwidth of one single MAC address.
 Upload Bandwidth: please input upstream bandwidth limit in Kbps
 Download Bandwidth: please input downstream bandwidth limit in Kbps
 Comment: note for the bandwidth policy

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4.5.7 Associated Client

Wireless Settings -> Associated Client

You can check the wireless clients’ status on this table

4. Configuration: 3G Router Mode

 MAC Address: MAC address of the wireless clients. If you need to find the IP

address, please go to Status->Client Table menu.

 Power Saving: 0: The power saving mode is off. 1: The power saving mode is on.
 Modulation: Show the which MCS level is used in 11n mode
 Channel Width: This indicates whether client is using 20MHz or 40MHz channel

wdith.

 RSSI(dBm): The signal strength of the client device.
 Time(Sec): The connected time of the wireless client.

4.5.8 Advanced Settings

Wireless Settings -> Advance Settings

 Channel Width: You can choose 20MHz or 20/40MHz channel width. Choose

20MHz for compliance with laws in some countries. 40MHz offers faster performance
than 20MHz

 Guard Interval: Guard interval is placed at the beginning of each transmission. It is

used to reduce the interference effect of multi-path transmissions. The use of long
Guard Interval may perform better in interference or multipath environment. However,
it can reduce the performance.

 MCS (Modulation and Code Scheme): MCS level for the 11n mode. It is

recommended to leave it at Auto.

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4. Configuration: 3G Router Mode

 Decline BA Request: Enable this option to decline the Block ACK requests by other

devices.

 BG Protection: The 802.11g standard includes a protection mechanism to ensure

mixed 802.11b and 802.11g operation. If there is no such kind of mechanism exists,
the two kinds of standards may mutually interfere and decrease network’s
performance..

 Beacon Interval: The device broadcasts beacon frames regularly to announce its

existence. The beacon Interval specifies how often beacon frames are transmitted in
time unit of milliseconds. The default value is 100, and a valid value should be between
1 and 65,535.

 Fragmentation: When the size of a unicast frame exceeds the fragmentation

threshold, it will be fragmented before the transmission. It should have a value of
256-2346 bytes, with a default of 2346. If you experience a high packet error rate,
you should slightly decrease the Fragmentation Threshold.

 RTS Threshold: RTS/CTS frames are used to gain control of the medium for

transmission. Any unicast (data or control) frames larger than specified RTS threshold

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4. Configuration: 3G Router Mode

must be transmitted following the RTS/CTS handshake exchange mechanism. The
RTS threshold should have a value between 256-2347 bytes, with a default of 2347. It
is recommended that this value does not deviate from the default too much.

 Short Preamble: A preamble is a signal used in wireless environment to synchronize

the transmitting timing including Synchronization and Start frame delimiter. In a "noisy"
network environment, the Preamble Type should be set to Long Preamble. The Short
Preamble is intended for applications where minimum overhead and maximum
performance is desired. If in a "noisy" network environment, the performance will be
decreased.

 Tx Burst and Packet Aggregate: These are the scheme used for improving the

performance of the data transmission in 11n and Turbo modes. It is recommended to
keep the settings on.

 AckTimeOut: When a packet is sent out from one wireless station to the other, it will

waits for an Acknowledgement frame from the remote station. The station will only
wait for a certain amount of time, this time is called the ACK timeout. In most

conditions, please do not change the Tx and Rx Acktimeout value. The Air3G’s
default value is correct in most case.s.

4.5.9 WMM Settings

Wireless Settings -> WMM Settings

Wi-Fi Multimedia (WMM) is a standard to prioritize traffic for multimedia applications. The
WMM Settings is to specify parameters on multiple data queue for better performance of
differentiated wireless traffic like Voice-over-IP (VoIP), other types of audio, video, and
streaming media as well as traditional IP data over the AP.

Configure the WMM QoS Parameters

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4. Configuration: 3G Router Mode

 AC Type

The queue and associated priorities and parameters for transmission are as follows:
 Data 0 (Be st Effor t, B E): Medium priority queue, medium throughput anddel ay.

Most traditional IP data is sent to this queue.

 Data 1 (Background, BK): Lowest priority queue, high throughput. Bulk data

that requires maximum throughput and is not time-sensitive is sent to this queue
(FTP data, for example):

 Data 2 (Video, VI): High priority queue, minimum delay. Time-sensitive data

such as Video and other streaming media are automatically sent to this queue.

 Data 3 (Voice, VO): Highest priority queue, minimum delay. Time-sensitive

data such as Voice over IP (VoIP) is automatically sent to this queue.

Packets in a higher priority queue will be transmitted before packets in a lower
priority queue.

 ECWmin and ECWmax

If an access point detects that the medium is in use, it uses the DCF random backoff
timer to determine the amount of time to wait before attempting to access a given
channel again. Each access point waits some random period of time between retries.
The wait time (initially a random value within a range specified as the Minimum

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46

4. Configuration: 3G Router Mode

Contention Window increases exponentially up to a specified limit Maximum
Contention Window.

The random delay avoids most of the collisions that would occur if multiple APs got
access to the medium at the same time and tried to transmit data simultaneously. The
more active users you have on a network, the more significant the performance gains
of the backoff timer will be in reducing the number of collisions and retransmissions.

The random backoff used by the access point is a configurable parameter. To describe
the random delay, a "Minimum Contention Window" (ECWMin) and a "Maximum
Contention Window" (ECWMax) is defined.

 ECWmin: The value specified for the Minimum Contention Window is the

upper limit of a range for the initial random backoff wait time. The number used
in the random backoff is initially a random number between 0 and the number
defined for the Minimum Contention Window.

 ECWmax: If the first random backoff time ends before successful

transmission of the data frame, the access point increments a retry counter, and
doubles the value of the random backoff window. The value specified in the
Maximum Contention Window is the upper limit for this doubling of the random
backoff. This doubling continues until either the data frame is sent or the
Maximum Contention Window size is reached.

 AIFS

The Arbitration Inter-Frame Spacing (AIFs) specifies a wait time (in milliseconds) for
data frames. 802.11e uses interframe spaces to regulate which frames get access to
available channels and to coordinate wait times for transmission of different types of
data. The AIFs ensures that multiple access points do not try sending data at the same
time but instead wait until a channel is free. Valid values for AIFs are 1 through 255.

 Transmission Opportunity

The Transmission Opportunity (TXOP) is an interval of time when a WMM client station
has the right to initiate transmissions onto the wireless medium. This value specifies
(in milliseconds) the Transmission Opportunity (TXOP) for client stations; that is, the
interval of time when a WMM client station has the right to initiate transmissions on the
wireless network.

We recommend that you use the default settings on the WMM QoS
page. Changing these values can lead to unexpected blockages of
traffic on your wireless LAN, and the blockages might be difficult to
diagnose.

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4. Configuration: 3G Router Mode

4.5.10 WDS Settings (Repeater)

This is known as WDS Repeater function. Enable this setting to allow remote WDS
equipped AP to extend the wireless signal of Air3G. Up to 4 WDS repeaters can be
connect with Air3G. WDS works by entering the wireless MAC addresses (also known as
BSSID) of remote Access Points.

 EncrypType: You can use one of the following 4 encryption type.

 None: no encryption is made. This is not recommended as it posts serious

security issue.

 WEP: This is the most compatible type. However, it is also easier for

hackers to break. Use this only if AES or TKIP doesn’t work.

 TKIP: Temporal Key Integrity Protocol, TKIP is more secured than WEP but

less secure than AES.

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4. Configuration: 3G Router Mode

 AES: The most secured encryption method. It is highly recommended to

use this method unless for compatibility issue.

 Encryp Key: Please enter your encryption key here.
 MAC Address: Please enter the Wireless MAC address or BSSID of the remote

Bridge. You can usually find it at remote Bridge’s device label.

4.5.11 WPS Settings

Example1: Using Hardware Push button

Please push WPS button directly on the back of the Air3G. The “WPS” LED flash will light
and the Air3G will start to survey the client’s WPS signal in the current environment. Please
be noticed that, within two minutes, you have to turn on the utility of your wireless network
card and click PBC to connect automatically.

If you also have a hardware WPS button on your wireless card, you can push the button
immediately now. If not, you can usually find the WPS PBC function in the wireless utility.
Below is an example using AirLive WN-360USB wireless network card to connect with
Air3G.

6

7

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4. Configuration: 3G Router Mode

Example 2: WPS Using PIN

Please login Air3G’s Web UI. Select Wireless Setting Æ WPS Setting. In the WPS
Progress, select “PIN” then “Apply.” You will get a PIN Code.

PIN Code

1

2

Then, please turn on the utility of your wireless network card. Choose WPS mode to
“Registrar” and enter the PIN Code. Press “PIN” and the connection will automatically
configure.

3

5

6

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5. System Configuration and Status Menu

5. System Configuration

5

In this chapter, we will explain about System Configurations Menu and the Status Menu of
the web management interface. Please be sure to read through Chapter 3’s “Introduction
to Web Management” first.

and Status Menu

5.1 Menu Structure

When you click on the “System Configuration” menu on the top menu bar, the following
screen will appear. The system configuration includes all non-wireless settings. We will
explain their functions here.

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5. System Configuration and Status Menu

5.2 LAN Interface Setup

System Configuration>> LAN Interface Setup

This menu is where you can configure all the aspect about LAN interface including IP
address, DHCP server settings..etc.

Device IP
Settings

DHCP
Settings

5.2.1 DHCP Settings

 DHCP Service: You can enable or disable DHCP server here.

z Disable: Disable DHCP server. By default, the DHCP server is OFF

in AP, Client, and WDS Bridge mode.

z Server: The Air3G will act as DHCP server to provide IP addresses to

the clients on the LAN/Wireless interface. By default, the DHCP server
is on in 3G router mode.

 DHCP Client Range: You can define the IP pool from which the DHCP clients can

get IP address.. Click on “Show Clients” to see the current DHCP client table.

 Lease Time: You can define how long the Air3G will reserve IP address for a

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5. System Configuration and Status Menu

particular PC or Devices here.

5.2.2 Add DHCP Static Lease Client

If you want to lock IP address to a MAC address, you should add DHCP clients to the
“Static DHCP Client”. Up to 40 entries can be entered. Below is the procedure for
adding an entry:

5. 1. Enter the MAC address of the device

6. 2. Enter the IP address of the device

7. 3. Click on the “Add” button

5.3 Time S ettings

System Configuration ->Time Settings

You can set the Air3G’s internal system clock by 2 methods. First is to enter the time
manually. Second is to set the time by NTP server. We strongly recommend setting the
time by NTP server because it will sync the time with remote server even after power
recycling. In another word, you will not lose time settings after power off.

 Sync with Host: Push this button to copy the time from your PC
 Time Zone: Select your nearby city here
 NTP Server: This is the time server where your Air3G will sync the time with.
 NTP Synchronization: How often your Air3G will sync the time with remote NTP

server.

Please remember to apply change after completing all settings.

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5. System Configuration and Status Menu

5.4 Password Settings

System Configuration -> Password Settings

You can change your username and password from the image below:

5.5 Power Saving (Green AP)

System Configuration -> Power Saving

The power saving scheduling function allows user to define the wireless service time and
output power level. It can be used to conserve the energy of your AP. Please remember
to set the time first

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54

5. System Configuration and Status Menu

5.6 Firmware Upgrade

System Configuration -> Firmware Upgrade

You can upgrade the firmware of your Air3G (the software that controls your Air3G’s
operation). Normally, this is done when a new version of firmware offers new features that
you want, or solves problems that you have encountered with the current version.

 Upgrade Firmware:

To update the Air3G firmware, first download the firmware from AirLive web site to your
local disk. Then from the above screen enter the path and filename of the firmware
file (or click Browse to locate the firmware file). Next, Click the Apply button to start.

The new firmware will be loaded to your Air3G. After a message appears telling you that the
operation is completed, you need to reset the system to have the new firmware take effect.

Do not power off the device while upgrading the firmware.
It is recommended that you do not upgrade your Air3G unless the new
firmware has new features you need or if it has a fix to a problem that you’ve
encountered.

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5. System Configuration and Status Menu

5.7 Configuration Save and Restore

System Configuration -> Configuration Save and Restore

The Air3G can save and restore the settings to a file.
You can save system configuration settings to a file, and later download it back to the Air3G

 Export Settings: Export the configuration file to your PC so you can restore the

settings later.

 Import Settings file location: Please browse for the configuration file location for

restoration of settings

5.8 Factory Default

System Configuration -> Factory Default

You can reset the configuration of your Air3G to the factory default settings.

5.9 Status Menu

5.9.1 Device Information

From this menu, you can know the Firmware version, System Up time, IP and MAC
addresses, and check whether the USB dongle is connected.

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5. System Configuration and Status Menu

5.9.2 Statistic

The Statistic menu displays the memory status, WAN traffic, LAN traffic, and WLAN traffic
conditions.

5.9.3 Client Table

The Client Table is also known as ARP table. It will show all the IP and MAC addresses of
the devices that pass Air3G.

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5. System Configuration and Status Menu

5.9.4 LOG

When you enable the log function, system will keep records of events and errors detected.

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6. AP Mode

6. AP Mode

6

In this chapter, we will explain about the wireless settings for AP Mode. Please be sure to
read through Chapter 1.4 and Chapter 3’s “Wireless Operation Mode” first.

6.1 Application for AP Mode

When operating in the Access Point mode, the Air3G becomes the center hub of the
wireless network. All wireless cards and clients connect and communicate through Air3G.
This type of network is known as “Infrastructure network”. Other Air3G or 802.11 b/g/n
devices can connect to AP mode through “Client Mode.

6.2 Wireless Settings

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6. AP Mode

6.2.1 Regulatory Domain

Wireless Settings -> Regulatory Domain

The Regulatory Domain decides what channels and Tx output power levels are available
for your country. In most cases, the Regulatory Domain is already selected correctly for
your country. Please note that using the wrong Regulatory Domain is strictly prohibited.
If you live inside EU, you must use the ETSI Regulatory Domain. If you live in United
States, you must use FCC domain.

The Air3G is available with the following Regulatory Domain:

Regulatory Domain Available

Maximum Tx Output Power

Channels

ETSI (Europe) 1 ~13 20dBm
FCC (United States) 1~11 23dBm
South America(11 CH) 1~11 30dBm
South America(14 CH) 1~14 30dBm

6.2.2 Multiple SSID

Wireless Settings -> Multiple SSID

Multiple SSID allows Air3G to create up to 4 different wireless networks (SSID). It is also
known as “Virtual AP” function. Each SSID can have its Encryption policy. The SSID1 is
the main SSID under Wireless Setting page.

 Hide SSID: The wireless network will become invisible, only accessible to people who

knows the SSID name.

 Enable Isolation between SSIDs: Enable this option will disable traffic between

different SSIDs.

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6. AP Mode

6.2.3 Channel

Wireless Settings -> Channel

The channel is the frequency range used by radio. In 802.11g/b standard, there are
maximum of 14 Channels. However, the available channels in each country are
dependant on the local regulation. If you are living in Europe, you can use channel 1 to 13.
If you are living in the United States, you can use channel 1 to 11.

Each wireless channel takes between 22 to 25MHz of frequency width. But the channels
are only 5MHz apart. Therefore, only every 5 channels can be free of interference with
each other. It is recommended that you can do a site survey to find about what channels
are used by surrounding AP and choose a channel that is not used by other APs.

6.2.4 Wireless Security

Wireless Settings -> Wireless Security

You should set up the wireless security immediately to ensure the security of your data
transmission and to prevent the unauthorized access.

is to use the “Setup Wizard”. It automatically chooses the most secured and easiest
scheme for your wireless security settings

. However, if you wish to choose your own

encryption scheme, the Air3G offers various type of encryption including WEP, WPA-PSK,
WPA, WPA2, WPA2-PSK encryptions method. In general, the WPA-PSK and WPA2-PSK
are the most popular and secured encryption scheme.

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The easiest way to setup encryption

Procedure to make encryption

6. AP Mode

 Step1: Select your SSID: If you have enabled the “Multiple SSID” function, there will

be more than one SSID to choose from. Each SSID(Virtual AP) can have its own
security policy.

 Step2: Select Security Policy: Air3G offers a full suite of security policy including

WEP(Pre-Shared Key), WPA(certificate), WPA-PSK(AES), WPA2-PSK(AES), and

802.1x Radius Authentication. Recently WiFi regulation prevent the use of TKIP
encryption in 11n mode. Therefore, the TKIP is only available in 11b/g mode. We

highly recommend using WPA2-PSK AES Encryption as the easiest and very
secured scheme for encryption.

6.2.5 Access Control

Wireless Settings -> Access Control

The Air3G allows you to define a list of MAC addresses that are allowed or denied to
access the wireless network. This function is available only for Access Point and AP
Router modes. This function is available only for Access Point and Gateway modes.

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

Disable: When selected, no MAC address filtering will be performed.



Allow list: When selected, data traffic from only the specified devices in the
table will be allowed in the network.



Deny list: When selected, data traffic from the devices specified in the table
will be denied/discarded by the network.

6.2.6 Associated Client

Wireless Settings -> Associated Client

You can check the wireless clients’ status on this table

6. AP Mode

 MAC Address: MAC address of the wireless clients. If you need to find the IP

address, please go to Status->Client Table menu.

 Power Saving: 0: The power saving mode is off. 1: The power saving mode is on.
 Modulation: Show the which MCS level is used in 11n mode
 Channel Width: This indicates whether client is using 20MHz or 40MHz channel

wdith.

 RSSI(dBm): The signal strength of the client device.
 Time(Sec): The connected time of the wireless client.

6.2.7 Advanced Settings

Wireless Settings -> Advance Settings

 Channel Width: You can choose 20MHz or 20/40MHz channel width. Choose

20MHz for compliance with laws in some countries. 40MHz offers faster performance
than 20MHz

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6. AP Mode

 Guard Interval: Guard interval is placed at the beginning of each transmission. It is

used to reduce the interference effect of multi-path transmissions. The use of long
Guard Interval may perform better in interference or multipath environment. However,
it can reduce the performance.

 MCS (Modulation and Code Scheme): MCS level for the 11n mode. It is

recommended to leave it at Auto.

 Decline BA Request: Enable this option to decline the Block ACK requests by other

devices.

 BG Protection: The 802.11g standard includes a protection mechanism to ensure

mixed 802.11b and 802.11g operation. If there is no such kind of mechanism exists,
the two kinds of standards may mutually interfere and decrease network’s
performance..

 Beacon Interval: The device broadcasts beacon frames regularly to announce its

existence. The beacon Interval specifies how often beacon frames are transmitted in
time unit of milliseconds. The default value is 100, and a valid value should be between

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6. AP Mode

1 and 65,535.

 Fragmentation: When the size of a unicast frame exceeds the fragmentation

threshold, it will be fragmented before the transmission. It should have a value of
256-2346 bytes, with a default of 2346. If you experience a high packet error rate,
you should slightly decrease the Fragmentation Threshold.

 RTS Threshold: RTS/CTS frames are used to gain control of the medium for

transmission. Any unicast (data or control) frames larger than specified RTS threshold
must be transmitted following the RTS/CTS handshake exchange mechanism. The
RTS threshold should have a value between 256-2347 bytes, with a default of 2347. It
is recommended that this value does not deviate from the default too much.

 Short Preamble: A preamble is a signal used in wireless environment to synchronize

the transmitting timing including Synchronization and Start frame delimiter. In a "noisy"
network environment, the Preamble Type should be set to Long Preamble. The Short
Preamble is intended for applications where minimum overhead and maximum
performance is desired. If in a "noisy" network environment, the performance will be
decreased.

 Tx Burst and Packet Aggregate: These are the scheme used for improving the

performance of the data transmission in 11n and Turbo modes. It is recommended to
keep the settings on.

 AckTimeOut: When a packet is sent out from one wireless station to the other, it will

waits for an Acknowledgement frame from the remote station. The station will only
wait for a certain amount of time, this time is called the ACK timeout. In most

conditions, please do not change the Tx and Rx Acktimeout value. The Air3G’s
default value is correct in most cases.

6.2.8 WMM Settings

Wireless Settings -> WMM Settings

Wi-Fi Multimedia (WMM) is a standard to prioritize traffic for multimedia applications. The
WMM Settings is to specify parameters on multiple data queue for better performance of
differentiated wireless traffic like Voice-over-IP (VoIP), other types of audio, video, and
streaming media as well as traditional IP data over the AP.

Configure the WMM QoS Parameters

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6. AP Mode

 AC Type

The queue and associated priorities and parameters for transmission are as follows:
 Data 0 (Be st Effor t, B E): Medium priority queue, medium throughput anddel ay.

Most traditional IP data is sent to this queue.

 Data 1 (Background, BK): Lowest priority queue, high throughput. Bulk data

that requires maximum throughput and is not time-sensitive is sent to this queue
(FTP data, for example):

 Data 2 (Video, VI): High priority queue, minimum delay. Time-sensitive data

such as Video and other streaming media are automatically sent to this queue.

 Data 3 (Voice, VO): Highest priority queue, minimum delay. Time-sensitive

data such as Voice over IP (VoIP) is automatically sent to this queue.

Packets in a higher priority queue will be transmitted before packets in a lower
priority queue.

 ECWmin and ECWmax

If an access point detects that the medium is in use, it uses the DCF random backoff
timer to determine the amount of time to wait before attempting to access a given
channel again. Each access point waits some random period of time between retries.
The wait time (initially a random value within a range specified as the Minimum

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6. AP Mode

Contention Window increases exponentially up to a specified limit Maximum
Contention Window.

The random delay avoids most of the collisions that would occur if multiple APs got
access to the medium at the same time and tried to transmit data simultaneously. The
more active users you have on a network, the more significant the performance gains
of the backoff timer will be in reducing the number of collisions and retransmissions.

The random backoff used by the access point is a configurable parameter. To describe
the random delay, a "Minimum Contention Window" (ECWMin) and a "Maximum
Contention Window" (ECWMax) is defined.

 ECWmin: The value specified for the Minimum Contention Window is the

upper limit of a range for the initial random backoff wait time. The number used
in the random backoff is initially a random number between 0 and the number
defined for the Minimum Contention Window.

 ECWmax: If the first random backoff time ends before successful

transmission of the data frame, the access point increments a retry counter, and
doubles the value of the random backoff window. The value specified in the
Maximum Contention Window is the upper limit for this doubling of the random
backoff. This doubling continues until either the data frame is sent or the
Maximum Contention Window size is reached.

 AIFS

The Arbitration Inter-Frame Spacing (AIFs) specifies a wait time (in milliseconds) for
data frames. 802.11e uses interframe spaces to regulate which frames get access to
available channels and to coordinate wait times for transmission of different types of
data. The AIFs ensures that multiple access points do not try sending data at the same
time but instead wait until a channel is free. Valid values for AIFs are 1 through 255.

 Transmission Opportunity

The Transmission Opportunity (TXOP) is an interval of time when a WMM client station
has the right to initiate transmissions onto the wireless medium. This value specifies
(in milliseconds) the Transmission Opportunity (TXOP) for client stations; that is, the
interval of time when a WMM client station has the right to initiate transmissions on the
wireless network.

We recommend that you use the default settings on the WMM QoS
page. Changing these values can lead to unexpected blockages of
traffic on your wireless LAN, and the blockages might be difficult to
diagnose.

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6. AP Mode

6.2.9 WDS Settings (Repeater)

This is known as WDS Repeater function. In AP mode, the Air3G will repeat the wireless
signal of remote AP/Router. Up to 4 WDS repeaters can be connect with Air3G. WDS
works by entering the wireless MAC addresses (also known as BSSID) of remote Access
Points.

 EncrypType: You can use one of the following 4 encryption type.

 None: no encryption is made. This is not recommended as it posts serious

security issue.

 WEP: This is the most compatible type. However, it is also easier for

hackers to break. Use this only if AES or TKIP doesn’t work.

 TKIP: Temporal Key Integrity Protocol, TKIP is more secured than WEP but

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6. AP Mode

less secure than AES.

 AES: The most secured encryption method. It is highly recommended to

use this method unless for compatibility issue.

 Encryp Key: Please enter your encryption key here.
 MAC Address: Please enter the Wireless MAC address or BSSID of the remote

Bridge. You can usually find it at remote Bridge’s device label.

6.2.10 WPS Settings

Example1: Using Hardware Push button

Please push WPS button directly on the back of the Air3G. The “WPS” LED flash will light
and the Air3G will start to survey the client’s WPS signal in the current environment. Please
be noticed that, within two minutes, you have to turn on the utility of your wireless network
card and click PBC to connect automatically.

If you also have a hardware WPS button on your wireless card, you can push the button
immediately now. If not, you can usually find the WPS PBC function in the wireless utility.
Below is an example using AirLive WN-360USB wireless network card to connect with
Air3G.

6

7

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6. AP Mode

Example 2: WPS Using PIN

Please login Air3G’s Web UI. Select Wireless Setting Æ WPS Setting. In the WPS
Progress, select “PIN” then “Apply.” You will get a PIN Code.

PIN Code

1

2

Then, please turn on the utility of your wireless network card. Choose WPS mode to
“Registrar” and enter the PIN Code. Press “PIN” and the connection will automatically
configure.

3

5

6

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70

7. Client Mode

7. Client Mode

7

In this chapter, we will explain about the wireless settings for Client Mode. Please be sure
to read through Chapter 1.4 and Chapter 3’s “Wireless Operation Mode” first.

7.1 Application for Client Mode

This mode is also known as “Client” mode. The Air3G acts as if it is a wireless adapter to
connect with a remote Access Point. Users can attach a computer or a router to the LAN
port of Air3G to get network access.

7.2 Wireless Settings

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7. Client Mode

7.2.1 Regulatory Domain

Wireless Settings -> Regulatory Domain

The Regulatory Domain decides what channels and Tx output power levels are available
for your country. In most cases, the Regulatory Domain is already selected correctly for
your country. Please note that using the wrong Regulatory Domain is strictly prohibited.
If you live inside EU, you must use the ETSI Regulatory Domain. If you live in United
States, you must use FCC domain.

The Air3G is available with the following Regulatory Domain:

Regulatory Domain Available

Channels

ETSI (Europe) 1 ~13 20dBm
FCC (United States) 1~11 23dBm
South America(11 CH) 1~11 30dBm
South America(14 CH) 1~14 30dBm

Maximum Tx Output Power

7.2.2 Profile Setting

Wireless Settings -> Profile Setting

.
A profile contains information about a remote AP’s network. In Client mode, you can
choose to connect with the remote AP using 2 methods.

 1. Using Site Survey to find the AP you want to connect with, then select the SSID to

connect. This is the easiest way.

 2. Create a profile about the remote AP you want to connect with. We will talk about

Profile in this section.

Procedure to Add a Profile

1. Click on Profile Settings on the Wireless Settings Menu. Then click on “Add” to add a
new profile

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7. Client Mode

2. On the Add profile page, please enter the information about the remote AP network
such as SSID, encryption. Click on “Apply” once finished

3. Once apply the new profile should appear on the list. Select the profile and click on
“Activate” button to take effect Only one profile can be activated at a time.

7.2.3 Site Survey

Wireless Settings -> Site Survey

You can scan for wireless networks around your location using the Site Survey function.
From the site survey function, you can also perform antenna alignment and establish
wireless connection

When you click on Site Survey, the following screen will appear. It might take awhile
depending on number of available APs in the area

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7. Client Mode

You can now select the SSID you want to connect with, then press the “Connect” button. If
encryption key is required, the AP will prompt you to enter the encryption information.

7.2.4 Advance Settings

 BG Protection: The 802.11g standard includes a protection mechanism to ensure

mixed 802.11b and 802.11g operation. If there is no such kind of mechanism exists,
the two kinds of standards may mutually interfere and decrease network’s
performance..

 AckTimeOut: When a packet is sent out from one wireless station to the other, it will

waits for an Acknowledgement frame from the remote station. The station will only
wait for a certain amount of time, this time is called the ACK timeout. In most

conditions, please do not change the Tx and Rx Acktimeout value. The Air3G’s default
value is correct in most cases.

 Tx Burst: These are the scheme used for improving the performance of the data

transmission in 11n and Turbo modes. It is recommended to keep the settings on.

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7. Client Mode

 Channel Width: You can choose 20MHz or 20/40MHz channel width. Choose

20MHz for compliance with laws in some countries. 40MHz offers faster performance
than 20MHz

 Guard Interval: Guard interval is placed at the beginning of each transmission. It is

used to reduce the interference effect of multi-path transmissions. The use of long
Guard Interval may perform better in interference or multipath environment. However,
it can reduce the performance.

 MCS (Modulation and Code Scheme): MCS level for the 11n mode. It is

recommended to leave it at Auto.

7.2.5 WPS Settings

Example 1: Using WPS hardware button

Please push WPS button directly on the back of the device. The “WPS” LED flash will light
and the Air3G will start to survey the AP’s WPS signal in the current environment.

Within two minutes, please push WPS button on your AP device, the connection will
automatic successfully.

Example 2: WPS using PIN

Please login Air3G’s Web UI. Select Wireless Setting Æ change to Client mode Æ Client
WPS Setting.

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7. Client Mode

1

2

3

Select the SSID that you want to connect. Choose WPS mode to “Enrollee” and get a PIN
Code in the field. Then press “PIN Start” and the “WPS” LED flash will light two minutes
on the device’s housing.

4

5

6

Copy PIN Code

7

Under AP site, Select Wireless Setting Æ WPS Setting. Choose WPS mode to “PIN” then
enter the PIN Code Æ click “Apply” and the connection will automatically configure.

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7. Client Mode

8

10

10

9

Enter PIN Code

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8 WDS Bridge Mode

8. WDS Bridge Mode

8

In this chapter, we will explain about the wireless settings for WDS Bridge Mode. Please
be sure to read through Chapter 1.4 and Chapter 3’s “Wireless Operation Mode” first.

8.1 Application for WDS Bridge Mode

This mode is also known as “WDS Pure MAC Bridge mode”. Each bridge can associate
with maximum of 4 other bridges in the WDS configuration. This mode is best used when
you want to connect LAN networks together wirelessly (for example, between office and
warehouse). This mode usually delivers faster performance than infrastructure mode.

8.2 Wireless Settings

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8. WDS Bridge Mode

8.2.1 Regulatory Domain

Wireless Settings -> Regulatory Domain

The Regulatory Domain decides what channels and Tx output power levels are available
for your country. In most cases, the Regulatory Domain is already selected correctly for
your country. Please note that using the wrong Regulatory Domain is strictly prohibited.
If you live inside EU, you must use the ETSI Regulatory Domain. If you live in United
States, you must use FCC domain.

The Air3G is available with the following Regulatory Domain:

Regulatory Domain Available

Channels

ETSI (Europe) 1 ~13 20dBm
FCC (United States) 1~11 23dBm
South America(11 CH) 1~11 30dBm
South America(14 CH) 1~14 30dBm

8.2.2 Advance Setup

Wireless Settings -> Advance Setup

Maximum Tx Output Power

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8 WDS Bridge Mode

 Channel Width: You can choose 20MHz or 20/40MHz channel width. Choose

20MHz for compliance with laws in some countries. 40MHz offers faster performance
than 20MHz

 Guard Interval: Guard interval is placed at the beginning of each transmission. It is

used to reduce the interference effect of multi-path transmissions. The use of long
Guard Interval may perform better in interference or multipath environment. However,
it can reduce the performance.

 MCS (Modulation and Code Scheme): MCS level for the 11n mode. It is

recommended to leave it at Auto.

 Decline BA Request: Enable this option to decline the Block ACK requests by other

devices.

 BG Protection: The 802.11g standard includes a protection mechanism to ensure

mixed 802.11b and 802.11g operation. If there is no such kind of mechanism exists,
the two kinds of standards may mutually interfere and decrease network’s
performance..

 Beacon Interval: The device broadcasts beacon frames regularly to announce its

existence. The beacon Interval specifies how often beacon frames are transmitted in
time unit of milliseconds. The default value is 100, and a valid value should be between
1 and 65,535.

 Fragmentation: When the size of a unicast frame exceeds the fragmentation

threshold, it will be fragmented before the transmission. It should have a value of
256-2346 bytes, with a default of 2346. If you experience a high packet error rate,
you should slightly decrease the Fragmentation Threshold.

 RTS Threshold: RTS/CTS frames are used to gain control of the medium for

transmission. Any unicast (data or control) frames larger than specified RTS threshold
must be transmitted following the RTS/CTS handshake exchange mechanism. The
RTS threshold should have a value between 256-2347 bytes, with a default of 2347. It
is recommended that this value does not deviate from the default too much.

 Short Preamble: A preamble is a signal used in wireless environment to synchronize

the transmitting timing including Synchronization and Start frame delimiter. In a "noisy"
network environment, the Preamble Type should be set to Long Preamble. The Short
Preamble is intended for applications where minimum overhead and maximum
performance is desired. If in a "noisy" network environment, the performance will be
decreased.

 Tx Burst and Packet Aggregate: These are the scheme used for improving the

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8. WDS Bridge Mode

performance of the data transmission in 11n and Turbo modes. It is recommended to
keep the settings on.

 AckTimeOut: When a packet is sent out from one wireless station to the other, it will

waits for an Acknowledgement frame from the remote station. The station will only
wait for a certain amount of time, this time is called the ACK timeout. In most

conditions, please do not change the Tx and Rx Acktimeout value. The Air3G’s
default value is correct in most case.s.

8.2.3 WDS Settings

For Bridge network, it is required to enter the Wireless MAC address of all remote bridges
that is connected directly to your Air3G. The wireless MAC address is also known as
BSSID.

 Encryp Type: You can use one of the following 4 encryption type.

 None: no encryption is made. This is not recommended as it posts serious

security issue.

 WEP: This is the most compatible type. However, it is also easier for

hackers to break. Use this only if AES or TKIP doesn’t work.

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8 WDS Bridge Mode

 TKIP: Temporal Key Integrity Protocol, TKIP is more secured than WEP but

less secure than AES.

 AES: The most secured encryption method. It is highly recommended to

use this method unless for compatibility issue.

 Encryp Key: Please enter your encryption key here.
 MAC Address: Please enter the Wireless MAC address or BSSID of the remote

Bridge. You can usually find it at remote Bridge’s device label.

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9. Emergency Firmware Recovery

9. Emergency Firmware

9

The Air3G features emergency firmware upgrade function that can restore your AP from a
firmware crashed. If you can’t access your AP anymore, please first try to restore the
setting to default by holding the RESET button (in the back) for more than 10 seconds. You
should be able to find the AP at 192.168.1.254. If you can’t find it, then please perform the
emergency upgrade. Please visit www.airlive.com->support->download and type “Air3G” to
the download page.

How Emergency Upgrade Works?

Air3G’s flash memory is divided into “firmware” and “bootloader” area. The bootloader
area is protected from writing and has a built-in emergency web server. Therefore, the AP
can be recovered from emergency web server after a firmware crash. The emergency
web server is enabled when AP is forced into emergency upgrade mode, it’s IP will be
changed to 192.168.1.254.

Recovery

Firmware Area

Flash Memory

Bootloader Area

Procedure to Restore the AP using Emergency Upgrade

1. Please connect one of your LAN Ports (LAN1~LAN4) to your PC directly.

2. Set your PC’s IP address to 192.168.1.50

3. Before connecting the power, please press and holding the “Reset” button (in the back

of the AP). Then plug in the power. Keep press and hold the Reset button until the
LED of the selected port goes on(about 3 seconds)

Emergency
Web Server

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9. Emergency Firmware Recovery

Fig 1-2 : Press and hold the reset button while plugging in the power.

6. Open a browser; type “192.168.1.254” for the website address. The following screen
should show up

7. Click the “Browse” button, select and open the correct firmware file.

8. Click on “UPGRADE” button. Do not touch the AP or PC until the upgrade is
completed.

9. After upgrading, the configuration will recover from the previous settings. Please
access your device at previous IP address. If you forget what the previous IP
address is or if you can’t access the device, please push the reset button for 10
seconds to restore your AP to factory default settings. The system will reboot. Then,
you should be able to login into the normal Web UI at the default IP: 192.168.1.254.

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10. Frequent Asked Questions

10. Frequent Asked

10

In this chapter, we will address some frequent asked questions about Air3G

Question: I plug my 3G USB dongle into Air3G, but it can not be recognized
Answer: Please go to Air3G webpage at

compatibility list. If your USB is on the compatibility list, please make sure
you plug in the USB dongle while the Air3G is powered off.

===================================================================

Question: After Emergency Upgrade, I can’t find my Air3G at 192.168.1.254
Answer: The Air3G will restore to the previous settings after successful Emergency

upgrade. Therefore, the IP address will change to the previous IP address.
If you still can’t find Air3G in previous address, please do a restore to default

and the Air3G should appear at 192.168.1.254
====================================================================
Question: When I wan to use “Site Survey” tool to connect with a AP that has no

encryption, why does the Air3G report “encryption type mismatch!” and ask

me to configure the wireless security settings?
Answer: When you press “Connect” from site survey, the Air3G will first check if the

current wireless encryption setting is correct. If not, it will ask you to modify

the setting. Therefore, if your current wireless settings has encryption and

the new AP you want to associate does not use encryption, then the Air3G will

report the mismatch. In this case, simple select “Disable” in the encryption

field and press “Apply Change”.

====================================================================

Question: When I change my wireless operation mode, why can’t I find my AP anymore?
Answer: By Default, the DHCP server is turned on in 3G Router mode. In other

modes, the DHCP server is turned off. If you get your IP address

automatically, then when you change from 3G Router to AP/Client/WDS

Bridge mode. Your PC will not be able to get IP address from DHCP server

anymore; therefore, you should set the IP address manually.

Questions

www.airlive.com and check the USB

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10. Frequent Asked Questions

====================================================================

Question: Where is the POE port for Air3G?
Answer: The PoE system used for Air3G is 12V Passive PoE. LAN1 is also used as

the passive PoE port.

====================================================================
Question: When I use PoE power with 3G USB dongle, why do I get unstable

performance sometimes?
Answer: Please use a 12VDC power adapter that supply more than 1.25A of current.

====================================================================

Question: When I connect my PoE switch with Air3G, why doesn’t it work?
Answer: The Air3G use a 12V Passive PoE system, it is not the same as the 48V

system used by PoE switch. As matter of fact, connect the 48V system to

the Air3G might damage the device!

====================================================================
Question: I thought the Air3G has 30dBm output power, why do I only see 20dBm on the

Tx Output Power option?
Answer: The maximum output power for Air3G is about 1watt(30dBm). However, it is

limited to 20dBm in EU and 23dBm in the U.S. for compliance with regulations.

Nevertheless, unlike normal 11n routers that typically provide less than

15dBm output power in 11n mode, the Air3G can provides up to 19dBm(EU)

and 22dBm(FCC) in 11n mode. It means greater coverage in 11n mode.

If you are living in countries that allow use of 30dBm output power, you can

change the Regulatory Domain to South America. Please be sure it is legal

in your country, do not use the wrong regulatory domain.

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11. Specifications

11. Specifications

11

The specification of Air3G is subject to change without notice. Please use the information
with caution.

11.1 Hardware Features

11.1.1 General Hardware Feature

 Long Range Wireless-N 3G Router
 Up to 30dBm Output Power (20dBm in EU, 23dBm in U.S.)
 Up to 9 times more wireless coverage than normal powered AP/Routers
 Work with 3G/3.5G/UMTS/EVDO/HSDPA USB Dongle
 1 x USB 2.0 Port
 Green AP power saving function
 150Mbps 1T1R Wireless-b/g/n standard
 12V Passive POE Port
 WAN port for ADSL/Cable Modem support
 WAN/3G Connection Auto-Backup
 3G Router, AP, Client, Bridge, Repeater modes
 Multiple SSID and Bandwidth Control
 8MB Flash, 32MB SDRAM

11.1.2 Power Supply

 Power Adapter Voltage : input 100~240Vac/50~60Hz , output 12V/1A
 Passive PoE Port(Accept 12Vdc). Passive PoE DC Injector not included

11.1.3 Dimension and Wei ght

 Dimension: 154 x 130 x 316 mm
 AP Unit Weight(Approximate): 280g
 Package Weight(Approximate): 686g

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11.2 Radio Specifications

11.2.1 Frequency Band

 USA (FCC) 11 Channels: 2.412GHz~2.462GHz
 Europe (ETSI) 13 Channels : 2.412GHz~2.472GHz
 South America: 11 Channels: 2.412GHz~2.462GHz
 South America: 14 Channels: 2.412GHz~2.477GHz

11.2.2 Rate and Modulation

 Data Rate:

 802.11n

11. Specifications

 20 MHz BW(LGI): 65, 58.5, 52, 39, 26, 19.5, 13, 6.5
 40 MHz BW(LGI): 135, 121.5, 108, 81, 54, 40.5, 27, 13.5
 20 MHz BW(SGI): 72.2, 65, 57.8, 43.3, 28.9, 21.7, 14.4, 7.2

 40 MHz BW(SGI): 150, 135, 120, 90, 60, 45, 30, 15
 802.11g: 54, 48, 36, 24, 18, 12, 9 and 6 Mbps
 802.11b: 11, 5.5, 2 and 1 Mbps

 Modulation

 802.11n

 20 MHz BW(LGI): 65, 58.5, 52, 39, 26, 19.5, 13, 6.5

 40 MHz BW(LGI): 135, 121.5, 108, 81, 54, 40.5, 27, 13.5

 20 MHz BW(SGI): 72.2, 65, 57.8, 43.3, 28.9, 21.7, 14.4, 7.2

 40 MHz BW(SGI): 150, 135, 120, 90, 60, 45, 30, 15
 802.11g: 54, 48, 36, 24, 18, 12, 9 and 6 Mbps

 802.11b: 11, 5.5, 2 and 1 Mbps

11.2.3 TX Output Power

ETSI(Europe)

 802.11b : About 20dBm max
 802.11g : About 20dBm max
 802.11n : About 19dBm max

FCC(The United States)

 802.11b : About 23dBm max
 802.11g : About 23dBm max
 802.11n : About 22dBm max

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South America

 802.11b : About 30dBm max
 802.11g : About 29dBm max
 802.11n : About 27dBm max

11.2.4 Receiver Sensitivity

 802.11b 11Mbps ≦ -90dBm
 802.11g 54Mbps ≦ -73dBm
 802.11n HT20 MCS7 ≦ -70dBm
 802.11n HT40 MCS7 ≦ -67dBm

11. Specifications

11.2.5 Supported WLAN Mode

 3G Router Mode
 AP Mode
 Client Mode
 WDS Bridge Mode
 WDS Repeater Mode

11.3 Software Features

Management Interface

 Web HTTP

Advance Functions

 Setup Wizard
 Site Survey
 3G service provider list
 Hotspot Authentication
 WAN/3G Connection Backup
 Bandwidth Control / Traffic Shaping
 Associated Client Table
 Wi-Fi, WPA compatible interoperability
 WPA with PSK/TKIP/AES support ,WPA2 support
 Virtual Server Function

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 Privacy Separator support
 Hide SSID Support
 Support adjustable output power
 ACK Timeout Adjustment
 Bootloader Protection and Emergency Firmware Upload Code
 Radius Supported
 Up to 40 Static DHCP entries
 Firmware upgrade and configuration backup via Web

11. Specifications

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12. Wireless Network Glossary

12. Wireless Network

12

The wireless network glossary contains explanation or information about common terms
used in wireless networking products. Some of information in this glossary might be
outdated, please use with caution.

802.3ad

802.3ad is an IEEE standard for bonding or aggregating multiple Ethernet ports into one
virtual port (also known as trunking) to increase the bandwidth.

802.3af

This is the PoE (Power over Ethernet) standard by IEEE committee. 803.af uses 48V
POE standard that can deliver up to 100 meter distance over Ethernet cable.

802.11b

International standard for wireless networking that operates in the 2.4 GHz frequency band
(2.4 GHz to 2.4835 GHz) and provides a throughput up to 11 Mbps.

802.1d STP

Spanning Tree Protocol. It is an algorithm to prevent network from forming. The STP
protocol allows net work to provide a redundant link in the event of a link failure. It is
advise to turn on this option for multi-link bridge network.

802.11d

Also known as “Global Roaming”. 802.11d is a standard for use in countries where
systems using other standards in the 802.11 family are not allowed to operate.

802.11e

The IEEE QoS standard for prioritizing traffic of the VoIP and multimedia applications.
The WMM is based on a subset of the 802.11e.

Glossary

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12. Wireless Network Glossary

802.11g

A standard provides a throughput up to 54 Mbps using OFDM technology. It also
operates in the 2.4 GHz frequency band as 802.11b. 802.11g devices are backward
compatible with 802.11b devices.

802.11i

The IEEE standard for wireless security. 802.11i standard includes TKIP, CCMP, and
AES encryption to improve wireless security. It is also know as WPA2.

802.1x

802.1x is a security standard for wired and wireless LANs. In the 802.1x parlance, there are
usually supplicants (client), authenticator (switch or AP), and authentication server (radius
server) in the network. When a supplicants request a service, the authenticator will pass
the request and wait for the authentication server to grant access and register accounting.
The 802.1x is the most widely used method of authentication by WISP.

Adhoc

A Peer-to-Peer wireless network. An Adhoc wireless network do not use wireless AP or
router as the central hub of the network. Instead, wireless client are connected directly to
each other. The disadvantage of Adhoc network is the lack of wired interface to Internet
connections. It is not recommended for network more than 2 nodes.

Access Point (AP)

The central hub of a wireless LAN network. Access Points have one or more Ethernet
ports that can connect devices (such as Internet connection) for sharing. Multi-function
Access Point can also function as an Ethernet client, wireless bridge, or repeat signals from
other AP. Access Points typically have more wireless functions comparing to wireless
routers.

ACK Timeout

Acknowledgement Timeout Windows. When a packet is sent out from one wireless station
to the other, it will waits for an Acknowledgement frame from the remote station. The
station will only wait for a certain amount of time, this time is called the ACK timeout. If the
ACK is NOT received within that timeout period then the packet will be re-transmitted
resulting in reduced throughput. If the ACK setting is too high then throughput will be lost

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12. Wireless Network Glossary

due to waiting for the Ack Window to timeout on lost packets. If the ACK setting is too low
then the ACK window will have expired and the returning packet will be dropped, greatly
lowering throughput. By having the ability to adjust the ACK setting we can effectively
optimize the throughput over long distance links. This is especially true for 802.11a and

802.11g networks. Setting the correct ACK timeout value need to consider 3 factors:
distance, AP response time, and interference. The Air3G provide ACK adjustment
capability in form of either distance or direct input. When you enter the distance
parameter, the Air3G will automatically calculate the correct ACK timeout value.

Bandwidth Management (Traffic Control)

Bandwidth Management controls the transmission speed of a port, user, IP address, and
application. Router can use bandwidth control to limit the Internet connection speed of
individual IP or Application. It can also guarantee the speed of certain special application
or privileged IP address - a crucial feature of QoS (Quality of Service) function.

Bootloader

Bootloader is the under layering program that will start at the power-up before the device
loads firmware. It is similar to BIOS on a personal computer. When a firmware crashed,
you might be able to recover your device from bootloader.

Bridge

A product that connects 2 different networks that uses the same protocol. Wireless
bridges are commonly used to link network across remote buildings. For wireless
application, there are 2 types of Bridges. WDS Bridge can be used in Point-to-Point or
Point-to-Multipoint topology. Bridge Infrastructure works with AP mode to form a star
topology.

Cable and Connector Loss

: During wireless design and deployment, it is important to
factor in the cable and connector loss. Cable and connector loss will reduce the output
power and receiver sensitivity of the radio at connector end. The longer the cable length is,
the more the cable loss. Cable loss should be subtracted from the total output power
during distance calculation. For example, if the cable and connector loss is 3dBm and the
output power is 20dBm; the output power at the cable end is only 17dBm.

Client

Client means a network device or utility that receives service from host or server. A client

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