|Typically Australian ISP upload speeds are a quarter of their downloads.|
Most are on a speed of 1500, 512 or 256, higher speed connections are still in the minority due to very high cost.
So upload speed would be 256, 125, and 64.
Also some areas can not get the higher speed for techical reasons.
So if you are not getting an image at all, it could be due to slow upload speed, but not getting sound as well could be a different problem.
I recall years ago when I only had dialup, I could have a conversation on that slow speed.