Hi Gajanan,
Welcome to EmiratesMac!
What kind of cable comes from the wall outlet? Is it an RJ-11 line or is it an RJ-45 cable? If its the latter, you don't have any problems at all. If its the former than there is a very simple solution to it i.e. D-link DSl-2740B which is Wireless-N router and hence will give you much more stable and faster speeds.
If you have any other questions, fire away.
Regards.