Siemens Home and Office Communication Devices (SHC) introduced an outdoor Gigaset SE680 WiMAX modem. It is based on the IEEE 802.16-2005 standard, complies with Wave 2 specifications, including MIMO (Multiple Input / Multiple Output) A and B, and supports beamforming. The product is designed for small enterprises or for bridging large distances. 
The Gigaset SE680 WiMAX outdoor modem enables data rates of up to 20 Mbps and is available as of summer 2008 for the 2.5 and 3.5 GHz frequency bands. It conforms to Wave 2 specifications and, with its two integrated antennas, supports MIMO (Matrix A and B) and adaptive beamforming so that the signal is amplified between the base station and WiMAX end-user devices. If desired, an external antenna can also be connected to increase the range. Such antennas produce a gain of up to 18 dBi at 3.5 GHz or 15 dBi at 2.5 GHz.
An acoustic signal output via the computer during installation helps ensure optimum alignment of the outdoor modem. The compact modem is easy to install, and Power over Ethernet reduces cabling.http://www.gigaset.siemens.com/provider
