Iran insists that it has frequently announced readiness for nuclear talks, saying it is expecting the Western side to take a "serious" step towards the resumption of negotiations, Press TV reported.
"We have agreed in principle to talks and we have expressed our readiness. It seems the other party is not so serious," Iranian Foreign Ministry Spokesman Ramin Mehmanparast said at his weekly press conference on Tuesday.
He said that Iran had put forward a proposal to hold ministerial-level talks with the P5+1 on the sidelines of the UN General Assembly in New York, but the other side seemed to be not ready for any negotiations.
The spokesperson added that even the country's Foreign Minister Manouchehr Mottaki suggested timing for negotiations with the P5+1 between late October and early November.
Now is the time for the other side to show an earnest desire for talks, Mehmanparast went on to say.
He said that Iran is willing to hold talks with the Vienna Group, consisting of the US, France, Russia and the IAEA, within the framework of the May 17 fuel swap declaration.
Iran signed a declaration with Turkey and Brazil on May 17 based on which Tehran agreed to exchange 1,200 kg of its low-enriched uranium on Turkish soil with 20 percent-enriched nuclear fuel.
He added that the Islamic Republic was also ready for talks with the P5+1 -- the US, UK, Russia, china and Germany -- based on Tehran's package of proposals or at least the commonalities of the packages put forward by both sides.
In 2009, Iran presented a package of proposals titled "Cooperation for Peace, Justice, and Progress" to the group of P5+1, which included proposals for talks for the establishment of peace and stability among the international community.