Sinn Féin president Gerry Adams says he is certain the outstanding issues about policing in Northern Ireland can be resolved.
Mr Adams has also said that Sinn Féin is prepared to play its part.
Policing matters are expected to form a crucial part of negotiations between the British and Irish governments and Northern Ireland's political parties in Scotland next month.
Earlier, DUP leader Ian Paisley has said that any agreement reached on the restoration of the Stormont Assembly by the November deadline should be put to the people of Northern Ireland in an election.
Mr Paisley was speaking at his first visit to a British Labour Party annual conference, which is being held in Manchester.
Sitting in the conference hall alongside Labour delegates, Mr Paisley heard the Northern Ireland Secretary, Peter Hain, say the people of Northern Ireland were sick and tired of having their very own political groundhog day and it was time it came to an end.
But the DUP leader said he would not be bullied into agreement by the deadline.