The ACT Supreme Court trial hinges on whether the woman consented to the sex being streamed.

The Crown has argued Daniel McDonald and Dylan Deblaquiere did not tell the woman the encounter was being broadcast to spectators.

But the defendants' legal team says the woman was a willing participant who had played to her audience by waving at the camera.

McDonald, 21, and Deblaquiere, 20, are on trial for using a carriage service in an offensive manner.

McDonald has also pleaded not guilty to committing an act of indecency on a fellow cadet.

The court has heard a sexual encounter between McDonald and the woman on the ADFA campus in March 2011 was relayed, via Skype, to his six friends watching in Deblaquiere's room.

Prosecutor Kylie Weston-Scheuber, in closing, said the woman was unaware the liaison was being broadcast, and only made the discovery after McDonald accidentally sent her the information on Facebook.

The prosecutor said jurors could accept the woman as an honest witness, with numerous Facebook and text messages, tendered in the court, supporting her story. Ms Weston-Scheuber said McDonald committed the act of indecency by activating Skype and streaming the sex without the woman's permission or knowledge.

She told jurors that lack of consent also comprised the charge of misusing a carriage service.

Defence barrister, James Glissan, QC, said the six-day trial came down to a case of "word-against-word".

He said the woman's version of the events had shifted over time and was therefore unreliable. Mr Glissan said the jury could not be satisfied of his clients' guilt beyond reasonable doubt based on the woman's evidence.

Mr Glissan argued the Crown had not proven Deblaquiere knew the woman was unaware of the broadcast and watching did not constitute a breach of community standards.

Jurors are expected to begin deliberating on Wednesday morning after Justice John Nield finishes his final directions.