One of six Australians accused of murdering a hotel doorman in Peru says the group will not defy an order to return the country because they have nothing to hide.

The Australians - Jessica Vo, brothers Hugh and Tom Hanlon, along with Harrison Geier, Andrew Pilat, and Sam Smith - are accused of killing Lino Rodriguez Vilchez while travelling in Peru in January last year.

Mr Rodriguez Vilchez's family claims the Australians pushed the 45-year-old from an apartment building after a dispute over a noise complaint.

The death was originally ruled a suicide, but investigators reopened their inquiries after a public campaign by Mr Rodriguez Vilchez's brother, Wimber, who argued the evidence appeared inconsistent with suicide.

The group, known as the Peru Six, maintain they are innocent.

They have been ordered to front court in Lima in August, but they fear they will not receive a fair trial.

Mr Geier says a Peruvian judge has rejected their request to deliver evidence via video-link from Australia.

But he says the group will not defy the summons.

"We just want an opportunity to actually give statements, so far they haven't allowed us to have any input whatsoever," he said.

Mr Geier says there has been an outpouring of support from the public and officials.

"The Government has been great and the various departments like DFAT and obviously Bob Carr and the Attorney-General," he said.

The group's lawyer has indicated there will be another appeal before they agree to appear in a Peruvian court