Which telecommunication companies offer a conference call service for overseas customers?

I live in Dubai, and I want to know if there's any companies in the US or the UK offer this kind of this service. Like I give out the number to my customers and they call and we are all contected and ready to have a conference call.

cingular.

Check out Conferencecaller.com . They offer a great service with low global rates. They even give away 100 free minutes in conferencing with no credit cards required. Their USA rate is only 2.7 cents per minute with no minimum purchase. It truly is a great deal. http://answers.yahoo.com/question/accuse_write?qid=1006052825132&kid=RpEpDjDtA2Lix0oAuqJe3VrRjfPMUX0ktOWkGpB0BquGxhN4og_y&s=comm&date=2006-07-12+21%3A15%3A03&.crumb=

I think FreeConferenceCall also offers overseas connections. Worth a try. Hope it helps!

http://www.freeconferencecall.com/index.asp http://answers.yahoo.com/question/accuse_write?qid=1006052825132&kid=MLp_MFbCVjd5hhHxNWG_&s=comm&date=2007-08-21+17%3A02%3A10&.crumb=