Failure to meet the basic requirements for a VoIP system makes it more expensive to communicate through VoIP than otherwise.
Ọtụtụ mgbe, enweghị ike izute ihe ndị dị mkpa maka usoro VoIP emesị mee ka ọ dịkwuo ọnụ iji kwurịta okwu site na VoIP karịa nke ọzọ.