Voice over IP (VoIP) presents totally different challenges than a public switched telephone network (PSTN). It runs on the web and inherits many challenges for VoIP service providers on a way to secure VoIP system. Until now, security has been
VoIP billing and management solutions are the wisest choices for several providers looking for reliability and career grade performance by providing various services. This may include comprehensive call rates, offer flexible call plans, billing for call usage, prepaid and postpaid