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・ Tether
・ Tether (cell biology)
・ Tether (comics)
・ Tether (disambiguation)
・ Tether (hieroglyph)
・ Tether car
・ Tether Rock
・ Tetherball
・ Tethered Aerostat Radar System
・ Tethered balloon
・ Tethered formation flying
・ Tethered Moon Play Kurt Weill
・ Tethered particle motion
・ Tethered spinal cord syndrome
・ Tetherin
Tethering
・ Tethers Unlimited, Inc.
・ Tethina
・ Tethininae
・ Tethinosoma
・ Tethlimmena aliena
・ Tethlimmena basalis
・ Tethlimmena gahani
・ Tethong
・ Tethra
・ Tethrisis
・ Tethya
・ Tethya actinia
・ Tethya aurantium
・ Tethya rubra


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Tethering : ウィキペディア英語版
Tethering

Tethering is connecting one device to another. In the context of mobile phones and tablet computers, tethering allows sharing the Internet connection of the phone or tablet with other devices such as laptops. Connection of the phone or tablet with other devices can be done over wireless LAN (Wi-Fi), over Bluetooth or by physical connection using a cable, for example through USB.
If tethering is done over WLAN, the feature may be branded as a mobile hotspot, which allows the smartphone to serve as a portable router; mobile hotspots may be protected by a PIN or password.〔(GoingTechy.com: What is WiFi Hotspot? )〕 The Internet-connected mobile device can act as a portable wireless access point and router for devices connected to it.
==Mobile device's OS support==
Many mobile phones are equipped with software to offer tethered Internet access. Windows Mobile 6.5, Windows Phone 7, Android (starting from version 2.2), and iOS 3.0 (or later) offer tethering over a Bluetooth PAN or a USB connection. Tethering over Wi-Fi, also known as Personal Hotspot, is available on iOS starting with iOS 4.2.5 (or later) on iPhone 4, 4S, 5, iPad (3rd generation), certain Windows Mobile 6.5 devices like the HTC HD2, Windows Phone 7, 8 and 8.1 devices (varies by manufacturer and model), and certain Android phones (varies widely depending on carrier, manufacturer, and software version).〔(Geek.com: Android 2.2. to support tethering )〕
For IPv4 networks, the tethering normally works via NAT on the handset's existing data connection, so from the network point of view, there is just one device with a single IPv4 network address, though it is technically possible to attempt to identify multiple machines.
On some networks, this feature is only contractually available by paying to add a tethering package to a data plan or choosing a data plan that includes tethering. This is done primarily because with a computer sharing the network connection, there may well be a substantial increase in the customer's mobile data use, for which the network may not have budgeted in their network design and pricing structures.
Some network-provided handsets have carrier-specific software that may deny the inbuilt tethering ability normally available on the handset, or only enable it if the subscriber pays an additional fee. Some operators have asked Google or any mobile producer using Android to completely remove tethering support from the operating system on certain handsets.〔http://www.techdirt.com/blog/wireless/articles/20110711/17464515050/you-dont-own-what-you-thought-you-bought-verizon-breaks-phones-turns-off-feature.shtml〕 Handsets purchased SIM-free, without a network provider subsidy, are often unhindered with regards to tethering.
There are, however, several ways to enable tethering on restriced devices without paying the carrier for it, including 3rd party USB Tethering apps such as PDAnet, rooting Android devices or jailbreaking iOS devices and installing a tethering application on the device.〔http://www.androidcentral.com/android-internet-tether〕 Tethering is also available as a downloadable third-party application on most Symbian mobile phones〔http://www.joiku.com〕 as well as on the MeeGo platform〔http://www.joikusoft.com/〕 and on WebOS mobiles phones.〔http://www.webos-internals.org/wiki/Application:FreeTether〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Tethering」の詳細全文を読む



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