Voice Traffic Termination

Hello! I'd like to make a Huge traffic toward some numbers" IVR " { special & premium numbers } located on some countries as : - Italy Egypt Cuba Congo Madagascar ... ...... ........ I am looking to make as mush as we can, for sure i am looking for a good rate ( Cheapest rate despite the quality ) All I need is to make a small test call before starting the work {{ the test Call will be less than 8 Sec }} just to double check the CLI , Rout & termination on my proiver