Originally Posted by
moondog
It seems like he was mainly complaining about missed handoffs while driving along 4th Ring in Bj. Maybe I too am conditioned to this stuff, but the idea of trying to make a VoIP in that situation strikes me as crazy...though not as crazy as doing the same on a train that's traveling 300 kph (something I have actually witnessed myself, believe it or not).
Err..."missed handoff" is not the right term. I can make or receive a regular voice call, without dropouts, and keep driving along the 4th ring for miles without a problem. But data service sucks big time. It's not just VoIP that has problems, but apps like Glympse (which allow my friends to track my location) have problems as well because they usually update every 3-5 seconds, and there are gaps in the data.
But now that I think about it, I've also seen data dropouts when standing perfectly still. For example, while eating lunch or dinner at a restaurant (one of which was 羲和雅苑, yes right in the middle of Beijing's 中关村 district). That's like not being able to provide service to the center of Silicon Valley when I'm sitting still with full signal. I was also getting data dropouts while walking on the trails in 中山公园.