I see that there 2 are plans

a) Unlimited 256KBps
b) Time Surf or others (Mb) says 256KBps/Upto 2MBps

After researching it is understood, Time Surf may provide additional speed depending on sharing load.

Isn't that true for Unlimited 256kbps.

For Mumbai, I do not see Modem being provided to me Just a wire ran to my flat.

Any experiences, please write