Motorola :: Backhaul or extend your network wirelessly.

High-performance, point-to-point radio solutions operate in many frequencies, providing reliable connectivity when and where you need it, even in the most challenging environments such as Motorola Bridges .

I think Motorola bridges are reliable after deploying one ,  result is awesome .

PTP 500 Series to deliver high-speed, robust wireless back haul. Connect buildings in a campus setting. Extend video surveillance beyond the wired infrastructure. Support bandwidth-intensive applications such as Voice-over-IP, tele medicine, IP gaming and multimedia. The PTP 500 bridges can deliver up to 99.999% availability in virtually any environment, including non-line-of-sight, long-distance line-of-sight, over water or open terrain, even through extreme weather conditions.

PTP 500 Series bridges come in Integrated and Connectorized models, both available in 5.4 and 5.8 GHz RF bands and operating at data rates up to 105 Mbps.