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The quality of *some* of their international connection is terrible. My guess is that it depends on how technologically advanced the other country's communications equipment are. >>
This is unlikely to be the cause all of the time - long distance calls within the USA are often terrible - when I was phoning "North" to "South" within the USA the call quality was often so bad I hung up

Especially Missouri and Pennsylvania to locations in Alabama and Lousiana! - this was not using Bigzoo btw....)
When I phone back to the UK from any location in the USA the call quality is often perfect with Bigzoo - better than calls within the USA for some unknown reason? Maybe they use satellite rather than cables?
Calls to Hong Kong are generally of lesser quality - but still nothing like the (poor quality) US domestic long distance calls using AT&T service at work. I'm not sure why USA to HK calls are of lower grade - as HK has an excellent telecommunications system?
When phoning the UK from Hong Kong - the call quality was often that good (PCCW to British Telecom) that friends used to often ask - "are you home?".
I think that in certain 3rd world countries, the call quality could be fairly poor though - that was often the case when phoning one of my buddies who had popped down to the Philippines for a bit of "bar hopping" - mind you he was probably half gassed in a go-go bar in Angeles City at the time on his mobile
On a different note - if anybody wants to go to the trouble of chatting on the internet, the Yahoo and MSN messengers often have excellent quality audio features nowadays. You just need to disable the "hands-free" option and then chat like you are using a CB radio. It does vary, but, generally audio has been excellent within the past year to the UK and HK
I vote for Bigzoo also - served the purpose now for me since May/June 2001
