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Factors of Bluetooth Technology to Mitigate Interference with Wi-Fi

Bluetooth wireless technology (BT) operates in the unlicensed Industrial, Scientific, Medical (ISM) band in the 2.4GHz frequency range. It randomly uses 79 1Mhz wide channels ranging from 2.402MHz to 2.480MHz. Each channel is occupied for a maximum time slot of 625us. During this time the radio must change the operating frequency, receive or transmit data, and provide enough off time before switching to the next hop frequency. In reality, the time the radio is actually transmitting on a given channel is much less and is dependent on the amount of data being transmitted. WIFI WiFi or 802.11 b/g, also operates in the same ISM band as BT. Due to complicated modulation techniques, 802.11g channels are 20MHz wide while 802.11b channels are 22MHz wide. This means a common WiFi channel can occupy from 20 to 22 BT channels. COURTESY: HTTP://EN.WIKIPEDIA.ORG/ WIKI/IEEE_802.11B-1999 INTERFERENCE For an RF signal to be received by the radios receiver, the RF signal must contain enough energy to be detected by the receiver circuit. The minimum receive level is known as the receivers sensitivity. This is similar to the lowest whisper that a human ear can detect. What if there happens to be two signals present at the same time and both are greater than the receiver’s sensitivity? Which signal will the radio detect? One would think that it would not be able to correctly detect either signal. That would be true if both signals are close to the same power level. If one signal had a higher power level than the other signal by a specific amount, the radio would be able to detect the more powerful signal. This is similar to a human ear being able to clearly understand members at a dinner table while there are many others talking at tables that are further away. The minimum ratio of power level for two signals when a radio can correctly detect the desired signal is known as the carrier/interferer ratio, or C/I. This means that two RF signals can exist on the same frequency at the same time without causing interference if the ratio of their power levels meet the radios C/I specification.

S9 User Guide - Motorola Support - Service

Motorola S9 Headphones Motorola Bluetooth Stereo Headphones S9 integrate wireless mobile music and calls with unmatched lightweight design. Behind-the-head wearing style, preferred for top comfort and stability, combines with integrated controls for music and calls selection. The S9 connects with a compatible Bluetooth stereo-enabled music phone or with an iPod (adapter sold separately) to bring the music library along for a full wireless music experience. To learn more about the S9, visit: www.hellomoto.com/S9 Motorola S9 Headphones 1 Package Contents • Motorola Bluetooth Active Headphones S9 • Wall charger • User’s Guide (this manual) • Pairing card • Additional ear cups • Carry pouch 2 Motorola S9 Headphones Motorola, Inc. Consumer Advocacy Office 1307 East Algonquin Road Schaumburg, IL 60196 www.hellomoto.com www.hellomoto.com/Bluetoothsupport 1-877-MOTOBLU (Motorola Bluetooth® support) 1-800-331-6456 (United States) 1-888-390-6456 (TTY/TDD United States for hearing impaired) 1-800-461-4575 (Canada) The use of wireless devices and their accessories may be prohibited or restricted in certain areas. Always obey the laws and regulations on the use of these products. MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. The Bluetooth trademarks are owned by their proprietor and used by Motorola, Inc. under license. iPod is a registered trademark of Apple Computer, Inc. registered in the U.S. and other countries. naviPlay is a trademark of TEN Technology, Inc. All other product or service names are the property of their respective owners. © Motorola, Inc., 2007.

HS850 - Motorola
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This product is controlled under the export regulations of the United States of America and Canada. The Governments of the United States of America and Canada may restrict the exportation or re-exportation of this product to certain destinations. For further information contact the U.S. Department of Commerce or the Canadian Department of Foreign Affairs and International Trade. The use of wireless devices and their accessories may be prohibited or restricted in certain areas. Always obey the laws and regulations on the use of these products. MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. The Bluetooth trademarks are owned by their proprietor and used by Motorola, Inc. under license. All other product or service names are the property of their respective owners. © Motorola, Inc., 2004. 6809489A97-O

LG Chocolate® Touch - Cellularpacific.com

The OtterBox Commuter Series is a perfect on-the-go accessory for everyday handheld technology. Safeguarding the screen from scratches and the corners from bumps and shocks, this style case offers unique design with reliable strength.ƒƒ OtterBox LGX4-CHTCH accommodates LG Chocolate Touch smartphones ƒƒ Layer 1: Self-adhering clear protective film (cleaning cloth and installation card included) ƒƒ Layer 2: Durable silicone mid-layer ƒƒ Layer 3: One piece custom molded polycarbonate shell ƒƒ Access to all side button features ƒƒ Silicone plugs allow access to all ports ƒƒ Open access to camera. Case provides added protection against bump and shock. Case is not protected against water.ADDITIONAL INFORMATION COLORS:     Black WEIGHT: 0.80 oz / 22.58 g DIMENSIONS: 4.43 in x 2.38 in x 0.63 in 112.62 mm x 60.53 mm x 16.03 mm For more information:   888.695.8820    www.otterbox.com

H This booklet is made from 60% post-consumer - Verizon Wireless

Copyright©2009 LG Electronics, Inc. All rights reserved. LG and the LG logo are registered trademarks of LG Group and its related entities. Chocolate® is a trademark of LG. All other trademarks are the property of their respective owners. Important Safety Precautions Read these simple guidelines. Breaking the rules may be dangerous or illegal. Further detailed information is given in this user guide. Violation of the instructions may cause serious injury or death. G Never use an unapproved battery since this could damage the phone and/or battery and could cause the battery to explode. G Never place your phone in a microwave oven as it will cause the battery to explode. G Never store your phone in temperatures less than -4°F or greater than 122°F. G Do not dispose of your battery near fire or with hazardous or flammable materials. G When riding in a car, do not leave your phone or set up the hands-free kit near the air bag. If wireless equipment is improperly installed and the air bag is deployed, you may be seriously injured. G Do not use a hand-held phone while driving. G Do not use the phone in areas where its use is prohibited. (For example: aircraft) 1 Important Safety Precautions G Do not expose the battery charger or adapter to direct sunlight or use it in places with high humidity, such as a bathroom. G Do not use harsh chemicals (such as alcohol, benzene, thinners, etc.) or detergents to clean your phone. This could cause a fire. G Do not drop, strike, or shake your phone severely. It may harm the internal circuit boards of the phone. G Do not use your phone in high explosive areas as the phone may generate sparks. G Do not damage the power cord by bending, twisting, pulling, or heating. Do not use the plug if it is loose as it may cause electric shock or fire. G Do not place any heavy items on the power cord. Do not allow the power cord to be crimped as it may cause electric shock or fire.

User Manual
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Table of Contents Package Contents.......................................................................1 System Requirements............................................................1 Features................................................................................. 2 Hardware Overview................................................................3 Connections..................................................................... 3 LEDs and USB Port......................................................... 4 . Installation...................................................................................5 Before you Begin....................................................................5 . Wireless Installation Considerations. ..................................... 6 Wall Mounting Your Device....................................................7 Connect to Cable/DSL/Satellite Modem................................. 8 Connect to Another Router..................................................... 9 Configuration.............................................................................11 Web-based Configuration Utility........................................... 11 Setup Wizard................................................................. 12 Internet Setup................................................................ 16 Dynamic PPPoE........................................................17 Static PPPoE ............................................................18 . Wireless Setup. ............................................................. 20 LAN Setup.....................................................................28 DHCP Server Settings................................................... 29 Time and Date............................................................... 30 Parental Control............................................................. 31 Port Forwarding............................................................. 32 . Filter Rules. ................................................................... 33 Firewall & DMZ.............................................................. 34 Advanced Wireless........................................................ 35 . Advanced Network. ....................................................... 37 Routing..........................................................................38

DPR 1260 manual - D-Link | Technical Support | Downloads

D-Link’s new Rangebooster G™ Multi-Function Print Server (DPR-1260) allows you to wirelessly share up to 4 USB Multi-Function Printers (MFP) on your network. This innovative new print server allows multiple users to Print or Scan using one of the four connected MFP printers. By supporting multiple MFP Printers over a wireless connection, this new print server is the ideal solution for your home, the classroom, or office. Simply plug your USB printer into one of the four ports, run the automatic configuration wizard, and you are ready to start printing and scanning over your wireless network. For extra network connectivity, you can also use the Ethernet port on the DPR-1260 to provide wireless connectivity to any Ethernet-enabled device, such as a computer or NetworkAttached Storage (NAS) * Maximum wireless signal rate derived from IEEE Standard 802.11g specifications. Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate. Environmental conditions will adversely affect wireless signal range. D-Link DPR-1260 User Manual

D-Link - Telkom
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D-Link, an industry leader in networking, introduces the new D-Link DAP-1360 Wireless N Range Extender. With the ability to transfer files with a maximum wireless signal rate of up to 300Mbps*, the DAP-1360 gives you high-speed wireless network access for your home or office. The DAP-1360 is Wi-Fi IEEE 802.11n compliant, meaning that it can connect and interoperate with other 802.11n compatible wireless client devices. The DAP-1360 is also backwards compatible with 802.11b/g. It can be flexibly configured to operate in 7 different modes Access Point, Wireless Client, Bridge, Bridge with AP, Repeater, WISP Client Router or WISP Repeater. With its Setup Wizard, the DAP-1360 ensures that you will be up and running on a wireless network in just a matter of minutes. The DAP-1360 features Wi-Fi Protected Access (WPA-PSK/WPA2-PSK) to provide an enhanced level of security for wireless data communications. The DAP-1360 also includes additional security features to keep your wireless connection safe from unauthorized access. The DAP-1360 supports WPS on the AP, repeater and wireless client operation modes,with each capable of being conveniently set up by using the PIN method or Push Button. • Actual data throughput will vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction, and network overhead, lower actual data throughput rate.

Manual for D-Link DSL-2640U
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DSL-2640U Wireless ADSL Router Power Adapter CD-ROM with User Manual One twisted-pair telephone cable used for ADSL connection One straight-through Ethernet cable One Quick Installation Guide Note: Using a power supply with a different voltage rating than the one included with the DSL-2640U will cause damage and void the warranty for this product. System Requirements • • ADSL Internet service Computer with: • 200MHz Processor • 64MB Memory • CD-ROM Drive • Ethernet Adapter with TCP/IP Protocol Installed • Internet Explorer v6 or later, FireFox v1.5 • Computer with Windows 2000, Windows XP, or Windows Vista D-Link DSL-2640U User Manual 4 Section 1 - Product Overview 11 Features • PPP (Point-to-Point Protocol) Security – The DSL-2640U ADSL Router supports PAP (Password Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) for PPP connections. The Router also supports MSCHAP. • DHCP Support – Dynamic Host Configuration Protocol automatically and dynamically assigns all LAN IP settings to each host on your network. This eliminates the need to reconfigure every host whenever changes in network topology occur. • Network Address Translation (NAT) – For small office environments, the DSL-2640U allows multiple users on the LAN to access the Internet concurrently through a single Internet account. This provides Internet access to everyone in the office for the price of a single user. NAT improves network security in effect by hiding the private network behind one global and visible IP address. NAT address mapping can also be used to link two IP domains via a LAN-to-LAN connection.

Manual D-Link AirPlus DI-614+ - SetupRouter

The D-Link AirPlus DI-614+ Wireless Broadband Router is an enhanced 802.11b high-performance, wireless router. It is an ideal way to extend the reach and number of computers connected to your wireless network. Unlike most 802.11b routers, the DI-614+ is capable of data transfer speeds up to 22 Mbps* (compared to the standard 11 Mbps) when used with other D-Link AirPlus products such as the DWL-520+ Wireless PCI Adapter. After completing the steps outlined in the Quick Installation Guide (included in your package) you will have the ability to share information and resources, such as files and printers, and enjoy the freedom that wireless networking delivers. The DI-614+ is compatible with most popular operating systems, including Macintosh, Linux and Windows, and can be integrated into a large network. This Manual is designed to help you connect the Router and the D-Link AirPlus 2.4GHz Wireless Adapters into a network in Infrastructure mode. Please take a look at the Getting Started section in this manual to see an example of an Infrastructure network using the DI-614+. This manual provides a quick introduction to wireless technology and its application as it relates to networking. Please take a moment to read through this manual and get acquainted with wireless technology.

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