Don't go by these plans. The actual FTTH plans are area specific.
Here in Gurgaon BSNL is giving the following plans:
FTTH BB Plans:
499 - upto 2mbps upto 8gb, beyond 1 mbps
599- upto 4 Mbps upto 15 gb, beyond 2 Mbps
895- upto 16 Mbps upto 60 GB
1095- upto 40 Mbps upto 90 GB
1295- upto 100 Mbps 125 GB => My current plan.
1495- upto 100 Mbps upto 160 GB
1795- upto 100 Mbps upto 220 GB
Beyond limit the speed is upto 2 Mbps
Unlimited free local and std calls in all above plans except 499 & 599.
Since July they have been waiving of the FUP limit also so i am enjoying 100Mbps with unlimited data.