Did you know you can make some free voip calls using the service Opomi?  By topping up and getting credit Opomi gets you plenty of free minutes, but if you just want to try them out, Opomi also is a great option for just getting free trial calls.

If you wanted to use Opomi without ever buying credit, Opomi offers the ability to make free 15 minute trial calls, twice per account without credit.  This means that as long as you keep registering free voip accounts with Opomi you’ll get 30 minutes of free calling time.  Sure it’s a bit annoying to register account after account, but that is the price of using the system without buying credit.

Free Voip Calls With Opomi
Sign up via this link (the site appears to be down but should be up later)