I've been researching wireless lan and wan for various clients. as a result of my research I've come across the following links I thought might be of interest. outdoor antenna calculator tool http://www.cisco.com/warp/public/cc/pd/witc/ao340ap/prodlit/obrc_in.xls good overview: http://computer.org/itpro/homepage/May_Jun01/stall/ cisco also has some worthwhile training available to partners and resellers. check with your Cisco account manager to get more info. I can say after going through a couple of the presentations, and even accounting for the marking BS, I walked away with a much better idea about how this works. I feel a lot more confident that I can talk intelligently about wireless. Still a lot more to learn. Chuck Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=11214&t=11214 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]