From sending messages by tying the same to pigeons, to the invention of traditional public switch telephony network and finally to IP telephony, we have come a long way in terms of communication and technology. The telecom industry has undergone a tremendous change with the invention of VoIP telephony service. VoIP service providers provide their services to corporates, wholesale VoIP carriers and VoIP resellers. Wholesale providers of VoIP further resell their services to resellers, who in turn sell VoIP minutes to end-users or residentials. The main difference between a wholesaler and a reseller is the volume of their business. A wholesaler usually has a large clientage spread across a given area; whereas a reseller would normally have a comparatively smaller client base.