Well that's a whole 'nother story.
Most of us believe that most or nearly all of his statements are lies.
I was merely replying to what was just said in court.
It sounds like the sound system (mic) had a sudden dropoff just as he is saying isn't or is. you can hear the dip.
Unless...here it comes..the dip in voice is coming from him...
"This one runs deep."
Murphy's Law:
Are you here?
I do not wish to rain on your parade, you've made a significant finding.
Though from my post it is far more complex. Just as I've written here for a year, and elsewhere, that OP himself is immensely complex.
So in your finding of OP's statement "I wanted to ask Reeva why is she phoning the police” is indeed telling.
And I listened and it sounds like he said "isn't.' But you see from my post above, perhaps the most important aspect is the dip in the volume of his voice [and all that that implies IMO];
But that does not detract from your highlighting whether he said is or isn’t.
You are prob. right, and I speculated a year ago that the heated argument led to a either him preventing her from leaving and/or a minor assault, and whether he ended up saying ‘is” or “isn’t” to me the dip in his voice is more important and is “proof” of what you are alleging.
As things escalated, at one point, she tried to call the police, and if he already assaulted her, or “just” imprisoning her is a crime, he did not want to face jail time. So he got the phone out of her hand in some assaulting or threatening way, perhaps getting his gun early in the scenario and pointing it at her and threatening to shoot if she did not drop it.
She fled to the loo or maybe some of this occurred in the loo, and he realized that he just committed another major crime by pointing a gun at her.
There is vastly more in my scenario.
But thanks for finding the is or isn’t in re to phoning the police.
In his Oscar-speak that dip was probably telling the world what you are alleging.
In his mind, if only Reeva did not try to call the police, she’d be alive. Again blaming Reeva for his killing her.
Above JMO.
ETA: While perhaps first preventing Reeva from leaving, as the end approached with Reeva taking refuge in the toilet, the phone having been forced from her hand. Oscar was prob. pissed that she got back some control. His voice pitch change when he screamed today, "get the fuc* out of my house", may have been the last thing he said to her [and not to intruders]. [Remember he threw his GF, Mellisa Rom, and her freind Cassidy Taylor-Memory out of the same house.]
When Reeva rightly did not trust him to come out, the final scenario took place and very differently from both teams' versions. Again JMO