I'm on my mobile and traveling so will reply in detail later. Just wanted to say thanks for your information. Very helpful.
5.8 ghz wimax equipment and setup is expensive, yes, but QOS is better and it can support long term goals. CPE is more expensive also, you are correct, but if you are serving a complex of 400 residents, you can put a receiver on the roof and drag ethernet into each flat.
All depends on what the end goal is.
How about licensing for ISP in India? Is it an easy process?
In terms of backhaul - T1 or DS3 (45Megs), how much approximate will bandwidth charges be? I'm trying to get quotes but it is a slow slow process. The providers have no vested interest in helping a new WISP
Cheers - Krish