Speak up about domestic violence, PM urges

Prime Minister Malcolm Turnbull says all governments across the country are pulling together to address the issue of domestic violence, as he helped to launch the COAG National Summit to Reduce Violence Against Women and their Children.

Mr Turnbull said the federal government is working with the states and territories to get action on the issue.

"Here we are in this place, today, focused on this one issue," the prime minister said.

"We disagree on many things ... but on this issue, it is an absolute unity ticket."

Mr Turnbull outlined his Third Action Plan, which includes measures such as setting up a portal to streamline authorities dealing with so-called "revenge porn" and improving the response to children who have experienced domestic violence at home.

"We have not paid attention to this issue that we should have in years past. That's why we have a national action plan, that's why we are addressing it now, and we have a common purpose."

Around 150 experts are due to speak at the summit, including child protection advocate Hetty Johnston, who says it's an important step forward.

"I think the key thing to get from this is some national consistency, that's what the sector lacks and it always has done, it's been the most glaring problem, and so hopefully with everyone in the same place and time we can address it," she said.

National domestic violence helpline: 1800 737 732 or 1800RESPECT. In an emergency call triple-zero.