David Cameron has visited camps in Lebanon and Jordan to meet Syrian refugees who have fled their country's civil war.
The Prime Minister has called on other EU countries to "step up to the plate" and follow Britain's lead by funding refugee camps around Syria.
Mr Cameron said there was a "direct connection" between shortfalls in aid for camps in Lebanon, Jordan and Turkey and the influx of migrants into Europe.
Austrian Chancellor Werner Faymann has said it is time to phase out extraordinary measures allowing the unimpeded inflow of thousands of migrants from Hungary to Austria and Germany.
The statement comes after "intensive talks" with German Chancellor Angela Merkel and a telephone call with Hungarian Prime Minister Viktor Orban.
He said Austria and Germany would play a central role in Europe "to ensure common securing of outer borders, ensure fair asylum procedures and achieve a fair distribution of asylum seekers via a European quota".
On a visit to Jordan, David Cameron says that the EU must "follow Britain's lead" and fund more refugee camps around Syria.
The prime minister has insisted the UK will not participate in plans to redistribute 160,000 refugees who have arrived in Europe.
Train traffic with Austria suspended as German authorities seek to reduce the number of asylum seekers arriving in the country.