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The Huawei E220 is a Huawei HSDPA access device manufactured by Huawei and notable for using the USB interface (USB modem). Technically it is a modem, USB and (due to the ISO 9660 format) virtual CD-ROM device. Launched on 21 June 2006, [1] the device is used for wireless Internet access using 3.5G, 3G, or 2G mobile telephony
IEEE 802.15.4 protocol stack. Devices are designed to interact with each other over a conceptually simple wireless network.The definition of the network layers is based on the OSI model; although only the lower layers are defined in the standard, interaction with upper layers is intended, possibly using an IEEE 802.2 logical link control sublayer accessing the MAC through a convergence sublayer.
4G eLTE is Huawei's proprietary derivative of the LTE standard, the "e" standing for "enhanced", intended to provide wireless broadband transmission with peak downlink speeds of 50 Mbit/s and 20 Mbit/s uplink per site in 5 MHz, 10 MHz and 15 MHz frequencies.
4G is the fourth generation of cellular network technology, succeeding 3G and designed to support all-IP communications and broadband services, enabling a variety of data-intensive applications. [1] A 4G system must meet the performance requirements defined by the International Telecommunication Union in IMT Advanced. 4G supports a range of ...
The "C" in the router number stands for compact, as the unit measures 4" by 4" by 1" with an internal antenna. The unit can be expanded with addition of HGA7S external antenna to boost range. Hardware Version 1.0 is the only option available in the United States since introduction in 2005.
An early example of a wireless router The internal components of a wireless router. A wireless router or Wi-Fi router is a device that performs the functions of a router and also includes the functions of a wireless access point. It is used to provide access to the Internet or a private computer network.
Huawei was placed on a U.S. trade restriction list in 2019 amid fears it could spy on Americans. Being added to the list means the company's suppliers have to seek a special, difficult-to-obtain ...
Often random wire antennas are also (inaccurately) referred to as long-wire antennas.There is no accepted minimum size, but actual long-wire antennas must be greater than at least a quarter-wavelength ( 1 / 4 λ) or perhaps greater than a half ( 1 / 2 λ) at the frequency the long wire antenna is used for, and even a half-wave may only be considered "long-ish" rather than "truly ...