Chapter 9. Billing and Mediation Services
Billing and mediation services are important in voice over IP (VoIP). They are key factors in helping a service provider or an enterprise vendor understand financial aspects, such as Return on Investment (ROI), when migrating its time-division multiplexing (TDM)-based network to VoIP. The public switched telephone network (PSTN) world offers a simpler billing structure for calls made over the network because the originator and the destination points are static and tied to a physical location. It also expects voice traffic (usage based on minutes of call durations) and data traffic (usage based on a flat fee) to be billed in different ways. VoIP changes this paradigm and allows the endpoints to move. The ...
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