"SKYPE OUT", enables calls to Qatar land lines at a cost of 3.05p per minute. Calls to mobiles in Qatar are at the rate of 3.07p per minute.
You can also obtain "SKYPE IN" which enables a land line to call your computer are also available but I do not know the cost.
You would need to open an account with SKYPE in order that you can call land lines worldwide.
We use it from Turkey and save a fortune in calls.