Business Conference Services

What is the best company for international conference calls?

I work for a not-for-profit organization. We have offices in Shanghai, Mexico, Canada and South Africa. We have a conference call with all offices around once a month. As you can imagine, it gets very expensive. We have been using Bell Canada. My managers are wary of VOIP as they have not had good luck with things like Skype/etc. So has anyone used any traditional conference calling companies other than Bell? Any that are great (ie. good international rates) or any to avoid? Thanks!

Public Comments

1. Packet8 .net
2. http://www.phonebell.net/references/PrepaidConferenceCalls