With much attention on speed to the exchange and (occasionally) on the backhaul network, there does not seem to be any discussion on data rates on international links.
For most of June, Skype calls to my son-in-law in Hong Kong became unusable. He was able to see me but video from him was unusable (4 frames per second and very very low resolution).
I am on FTTC and he is on cable (similar speed) and we both have good speed tests (to local servers). I performed a speedtest.net to a Hong Kong server and got only 1.8/0.43 Mbps while tests to servers in most other countries gave excellent results. At that time, my son-in-law did not do the corresponding test.
The problem has gone now, we both have reasonable long distance performance and Skype is fine
So if we get the problem again whose ISP do we complain to? My guess is that it would be the sender of data that chooses (and pays for) the route but I could be wrong.
And what obligation does an ISP have to provide reasonable quality links internationally?