Мaybe I was not clear enough. Situation is as follows: All calls to landlines in Greece and Romania I have for free /included in mountly fee/ so my idea is to put in outgoing rule of that provider, dial patterns that will route all calls to fixed numbers to Gr and Ro via this provider. But I don't now exactly how to make this dial pattern in the way, that calls to all landlines /all or at least major cities/ to be routed via that provider.
Sorry for my English!