Call screener An "industry vet" stated, "At the very least you can catch 90 percent of them by getting their number and calling them back, generally they freak or give you a phony phone number." Other techniques described "include grilling the caller on little known facts about the situation or organization they claim to represent." Prank callers don't always get through: Although the names of most call screeners never make it on the air, there are a few notable screeners that are major characters on their shows. Many live call-in radio shows do not like alternative or adverse opinions to be aired,
Call-through telecom number, which is then routed over VoIP to the point when it is terminated at the recipient's physical phone line (fixed landline or wireless mobile or cell line), even in another country. This is what call-through telecom operators do - they provide call termination at both ends of the call. There are several cheap call-through numbers in Austria, for example toolani. Quite a lot of call-through companies are active in the German market, typically offering their services via 0180 Shared Cost Service numbers charged at 0.039 € to 0.14 € per minute from German landlines, and up to 0.42 €