We were mostly dealing with 5km to 10km links, and it was some time ago. There were other considerations as well, so I didn't get into it too much ... not my field, the peeps doing the work seemed to know what they were doing (both customer and supplier), and I had other things to worry about. Extreme real-time data compression is interesting when you're on a lossy link.

I don't think budget was a problem for this customer, getting it right was important, but useful to know about the options and constraints ... thank you.