A spokesperson for the Dutch government press service said the latest conversation between prime minister Mark Rutte and Russian President Vladamir Putin focused on practical matters including the handing over of the black boxes that were seen being retrieved from the crash site.
The spokesperson said Putin vowed his full cooperation in handling the case, as well as allowing unrestricted access to the site.
Prime minister of self-proclaimed Donetsk People's Republic Alexander Borodai said they were ready to hand the black box to the International Civil Aviation Organization.
"We are keeping the black box in Donetsk. We are waiting for international civil aviation representatives to arrive."
Experts from the Dutch National Forensic Investigation Team were given access to inspect the remains of the passengers and crew which were loaded onto a train near the town of Torez.
The Dutch investigators demanded from the pro-Russian rebels that the heavily-guarded train cars be sealed and allowed to leave within hours.
Emergency workers were able to recover 21 more bodies on Monday in and around the crash site, with 16 victims still unaccounted for, according to Ukraine's Prime Minister.
A total of 298 people who came from 11 countries were killed when Flight MH17 was shot out of the sky last week.
Western leaders are urging Putin to take serious actions in helping international rescuers bring the bodies home.
Secretary of State John Kerry said the U.S. knows "with confidence" that Ukraine did not
have a weapon capable of downing a jet and alleged missile system had been transferred from Russia.
Paul Yi, Arirang News.