A police officer in uniform raped a woman, NSW prosecutors have told a jury.
Kristian Dieter Glaser, 44, pleaded not guilty to sexually assaulting the woman in her southern Sydney home in 2013, five years before she reported the alleged incident to police.
"The Crown contends he had on his police uniform - he was on duty or had just finished his shift," prosecutor Michael Gleeson said in his opening address on Thursday.
"What the complainant alleges is ... Mr Glaser forcibly took her by the wrists, removed her clothes and had sexual intercourse with her ... and he did that without her consent."
The complainant was expected to tell the Sydney District Court jury she "emphatically" informed Glaser she was not consenting, telling him "no" when he was moving her into the bedroom and removing her clothes.
The jury was told the woman, whose identity cannot be publicly revealed, called Glaser in 2018 and spoke to him about the alleged attack.
After hearing the recorded phone call, the jury may accept Glaser acknowledged the pair had sexual intercourse at her place in 2013, Mr Gleeson said.
"But when the complainant accuses him of in effect having sexual intercourse without her consent, it's fair to say he emphatically denied (it)," the prosecutor said.
Glaser was a serving officer at the time but is no longer in the force.
Two counsellors are expected to give evidence that the woman made complaints to them in 2016, the jury was told.
Glaser did not deny that "on one occasion" he had sexual intercourse with the woman at her home in 2013, defence barrister Adrian Williams said.
"He does deny he did so without her consent," he told the jury, describing the woman as a "willing and interested" participant.
"Her complaint about these events was made years later. Years."
The trial is due to resume on Friday.