The Linksys® Dual-Mode Internet Telephone Kit allows you to make calls to Yahoo Messenger™ users over the internet or regular calls over your existing standard telephone line. Yahoo Messenger is a FREE internet service for making long distance calls using VOIP (voice over internet protocol) Sign up for free service by clicking here. Yahoo Messenger You'll get the convenience of a Dect 6.0 cordless phone and all its features, plus the high-quality voice reception that you get from Voip on your PC, without being tied to your computer! Download the software, connect the USB Base Station to your PC, and your Yahoo Messenger contact list appears on the handset's screen. Just choose from your list and talk! Now you can have cordless handset convenience when you use Yahoo Messenger and you don't have to sit in front of your computer when you want to talk to your friends. The Linksys Dual-Mode Internet Telephone Kit comes with the handset, charger, and a USB Base Station that plugs into your computer. Dual-Mode capability lets you choose whether to make calls over a standard telephone line or with the Yahoo Messenger application running on your PC. Just select who you want to talk to from your contact list on your Handset, press a button, and get ready to talk. Of course, the Handset supports Yahoo Messenger Phone Out Service dialing as well. It rings when you have a Yahoo Messenger call coming in, and shows the Caller ID on the screen. The Handset also supports call waiting and Yahoo Messenger's optional Voicemail service. When you're on a call, you can hit the Mute button for privacy, or use the speakerphone function to let everyone join in. Features: 2-in-1 cordless DECT telephone for Yahoo Messenger and a standard telephone line (PSTN) Route calls between Yahoo Messenger or a standard line Plug and Dial: Easy to install and easy to use Expandable up to 4 handsets with a single base station Intercom support enables communication between multiple handsets Hands-free speakerphone with one key touch Graphical color LCD display with status indicators Base station with USB connection to connect to your PC and RJ-11 connection to connect to your phone line Status display of Yahoo Messenger contact list and Yahoo Messenger voicemail Superior sound quality Voice encryption for maximum security 120 hours standby time, 10 hours talk time Frequency Bands: Europe- 1880~1900MHz, North America- 1920~1930MHz, South America- 1910~1930MHz Standards: DECT (Digital Enhanced Cordless Telecommunication Standard) Speech Coding: 32Kbps ADPCM Distance Range: 300 meters outdoors, 50 meters indoors Number of Channels: 10 channels (Europe & SA), 5 channels (NA) Standby/Talk Time: 120 hours / 10 hours USB Base Station: Power: 9V DC, 300 mA Interface: USB 1.1 Button: Handset Locator Button Certification: FCC, cUL, CE Includes: Handset 2 NiMH batteries Charger with power adapter USB base station with USB cable power adapter RJ-11 cable Setup wizard CD with Yahoo Messenger software Requirements: Internet connection (cable/DSL/other) PC with Min. 400 MHz processor 128MB Ram One available USB connection 15 MB hard disk space Windows XP, 2000, Vista CD-Rom Drive