Apparently I lied! There's currently an uplink in Vancouver as well, but it will no longer active post-MPEG-4 conversions. G1 is solely out of Calgary, F1R and F2 will be mostly out of Mississauga. I don't have specifics as I guess there's conversations right now about movements, so anything as of today could be changing soon.
Any change to this information in the last year or so - is Toronto the sole uplink for the F birds, and Calgary/Vancouver the G1 uplink locations?