We have two buildings that are across the street from each other. Each has their own separate network. We needed to connect them together using a fast connection because of the large number of files that are copied between the networks on a daily basis. We have a wireless bridge setup right now between the buildings that gives us about 20Mbps (it's two Aironet 1240AG in root/non-root configuration).
Unfortunately there's a lot of RF interference in the area (lots of residential buildings) and the Aironet's lose connectivity on a daily basis (which leads to a lot of disgruntled users). I'm thinking about upgrading to some Motorola PTP wireless bridges but I wanted to ask, am I going about this the right way? We went with the wireless bridges because it was cheaper than getting a hard line between the two buildings but I'm starting to regret that idea given how badly these AP's are working. Any suggestions?
Edit: The Aironet's are using the 5Ghz band and use 802.11a. The antennas are directional panel antennas.