Burma will accept medical workers from southeast Asian countries to help with the relief effort.
The Association of South East Asian Nations confirmed that Burma is now ready to accept help from international aid agencies.
Singapore Foreign Minister George Yeo told a news conference that Burma, also known as Myanmar, had agreed to accept medical teams from all ASEAN countries.
'We will establish a mechanism so that aid from all over the world can flow into [Burma],' he said. However, the entry of aid workers from outside ASEAN would be on a case-by-case basis.
'We have to look at specific needs. There will not be uncontrolled access,' he said.
Mr Yeo said the cost of the devastation caused by Cyclone Nargis was over €6.4bn. The cyclone struck Burma two weeks ago, leaving 134,000 dead and missing and 2.4 million destitute.
The country has declared three days of mourning beginning tomorrow.
Humanitarian agencies say the death toll, already one of the most devastating cyclones to hit Asia, could soar without a massive increase of emergency food, water shelter and medicine to the worst-hit region, the Irrawaddy Delta.
'We always welcomed international aid. We (have) not delayed,' Burma's Foreign Minister Nyan Win told reporters.
Indonesia's Foreign Minister, Hassan Wirajuda, said after today's meeting that each ASEAN country would send a team of 30 medical personnel 'very soon' with unrestricted movement in the country.
The ten-member group also said Burma should allow more international relief workers into stricken areas, though it said international assistance should not be politicised.
Ban to travel to Burma
UN Secretary-General Ban Ki-moon will travel to Burma this week to put pressure on the country's military rulers to open more channels for help.
His spokeswoman said she also expected an international conference in Bangkok on 24 May to marshal funds for the relief effort.
Aid has been trickling into Burma but the junta, suspicious of the outside world, has been reluctant until now to admit major foreign relief operations and the workers to run them.
The World Food Programme says it has so far managed to get rice and beans to 212,000 of the 750,000 people it thinks are most in need.