OK,
Found out that the site has the international calls being routed over the local pool lines. Some of the local lines have restirictions on LD calling. They couldn't make calls sometimes before. I added 2 more lines that theyy had at the site into the local pool and those are restricted as well. They are just not able to make international call more frequently because of these added lines.
I routed the calls to go over the T-1 that is just LD and I receive a message from the T-1 provider telling me that the call cannot be completed as dialed, please call us.
I know that this issue is vendor based.
Thank you for all of your help.