Medvedev explained to Silva Berlusconi in detail Russia's position in a phone conversation. The two leaders also discussed a number of issues related to the "post-crisis" development of bilateral ties.
The Kremlin did not give exact details of the phone conversation.
Moscow recognized South Ossetia and Abkhazia as independent states on Tuesday, despite warnings by Western leaders not to do so.
The move came two weeks after Russia concluded its operation "to force Georgia to peace" as a response to Tbilisi's attack on South Ossetia on August 8.
The conversation came a day before an EU emergency meeting on Georgia. The 27-nation organization is expected to discuss future relations with Russia. A number of member states, including Britain and Poland, have called for sanctions against Moscow, as well as the postponement of talks on a new partnership and cooperation agreement with Russia.
Moscow insists that it is in full compliance with a six-point peace deal hammered out in mid-August between Russian President Dmitry Medvedev and French leader Nicolas Sarkozy, although France and other Western countries dispute this.
The ceasefire deal made no mention of Georgia's territorial integrity. Moscow has said Georgia lost its right to Abkhazia and South Ossetia when it launched its ground and air offensive against South Ossetia's capital, killing large numbers of civilians, mainly Russian nationals.
