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Dial-up networking (DUN) | Dial-up networking (DUN) |
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Dial-up requires no additional infrastructure on top of the telephone network. As telephone points are available throughout the world, dial-up remains useful to travellers. Dial-up is usually the only choice available for most rural or remote areas where getting a broadband connection is impossible due to low population and demand. Sometimes dial-up access may also be an alternative to people who have limited budgets, though affordable broadband is now increasingly available across the world.
Smartphone is designed to meet Bluetooth Specification 1.1, Generic Access, Service Discovery, Dial-up Networking, Hands-Free, Serial Port, Generic Object Exchange, Object Push, SIM Access, and File Transfer profiles. To ensure compatibility with other Bluetooth devices, check with the device manufacturer. A revolutionary hack to enable the Bluetooth Dial-Up Networking (DUN) Profile on Windows Mobile 6 Pocket PC, allowing you to use your device as a cellular modem. The hack makes it possible to use most WM5 AKU3 / WM6 devices in the traditional (pre-WM5 AKU3) DUN dial-up method, in addition to the new, in WM5 AKU3 introduced Internet Sharing. Starting from WM 5.0 AKU3, Microsoft removed the DUN profile which is still needed by legacy/incompatible systems such as car kits, Mac OSX or Linux based computers which may or may not support the Bluetooth Personal Area Network (PAN) profile required by Internet Sharing. Now, with this hack, you can enable the Bluetooth DUN profile on most Windows Mobile 5 AKU3 and Windows Mobile 6 Pocket PCs and continue to use the Internet Sharing feature of WM 6. Smart clients are easily deployed and managed client applications that provide an adaptive, responsive and rich interactive experience by leveraging local resources and intelligently connecting to distributed data sources. Smart clients share some attributes of thin clients, including the broad reach (anyone with an broadband or dial-up connection), easy change management (because there's a single code base) and easy deployment (because the client code is deployed dynamically from a server). Modern dial-up modems typically have a maximum theoretical speed of 56 kbit/s (using the V.92 protocol), although in most cases only up to 53 kbit/s is possible due to overhead and, in the United States, FCC regulation. These speeds are currently considered the maximum possible; in many cases transfer speeds will be lower, averaging anywhere between 33-43 kbit/s. Factors such as phone line noise and conditions, as well as the quality of the modem itself, if the modem is external or internal, all play a large part in determining connection speeds. Broadband Internet access (via cable and DSL) has been increasingly replacing the older technology of dial-up access in many parts of the world over the last five years. The reason for this is mostly due to broadband connections featuring speeds which far exceed the capacity of dial-up, many of which provide speeds greater than 1 Mbit/s, as well as reducing prices under dial-up prices offered by companies such as Verizon. An increasing amount of Internet content such as Adobe Flash, online gaming and streaming media require large amounts of bandwidth. A CEA study in 2006 found that dial-up Internet access is on a notable decline in the U.S. In 2000, dial-up Internet connections accounted for 74% of all U.S. residential Internet connections. This figure dropped to 60% by 2003, and currently stands at 36%. Modems were once the most popular means of Internet access in the U.S., but with the advent of new ways of accessing the Internet, the traditional 56K modem is losing popularity. |