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The WRT54GC router is an exception and has an internal antenna with optional external antenna. As a cost-cutting measure, as well as to satisfy FCC rules that prohibit fitting external antennas with higher gain, the design of the latest version of the WRT54G no longer has detachable antennas or TNC connectors.
The BT Home Hub 3 incorporated WPS functionality, seen on other routers, which enables the user to connect to their encrypted network by the use of a "one touch" button, and also includes "smart wireless technology", which automatically chooses the wireless channel to give the strongest possible wireless signal. [10]
Notable custom-firmware projects for wireless routers.Many of these will run on various brands such as Linksys, Asus, Netgear, etc. OpenWrt – Customizable FOSS firmware written from scratch; features a combined SquashFS/JFFS2 file system and the package manager opkg [1] with over 3000 available packages (Linux/GPL); now merged with LEDE.
External wireless modems include connect cards, USB modems, and cellular routers. Most GSM wireless modems come with an integrated SIM cardholder (i.e. Huawei E220 , Sierra 881.) Some models are also provided with a microSD memory slot and/or jack for additional external antenna, (Huawei E1762, Sierra Compass 885.) [ 62 ] [ 63 ]
Huawei launched the E5 at the Mobile World Congress in Barcelona in February 2009. It was originally named the E583X [2] and is also known as the E5830/E5852. [3] The E5 offers high-speed wireless connectivity, providing users with group internet access, individual Wi-Fi hotspots and connection to devices such as notebooks, digital cameras and games consoles.
Some wireless routers have one or two USB ports. These can be used to connect printer or desktop or mobile external hard disk drive to be used as a shared resource on the network. [2] A USB port may also be used for connecting mobile broadband modem, [3] aside from connecting the wireless router to an Ethernet with xDSL or cable modem. A mobile ...
IEEE 802.11n is an amendment to IEEE 802.11-2007 as amended by IEEE 802.11k-2008, IEEE 802.11r-2008, IEEE 802.11y-2008, and IEEE 802.11w-2009, and builds on previous 802.11 standards by adding a multiple-input multiple-output (MIMO) system and 40 MHz channels to the PHY (physical layer) and frame aggregation to the MAC layer.
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.