...CallShop All the administration and shop functions you need in one intuitive interface. Offer your customers prepaid or postpaid calling. CSB goes beyond traditional call shop functionality and allows you to operate according to any combination of the following scenarios Stand-alone Prepaid CSB is a complete, stand-alone pre-paid billing solution and reseller interface that enables you to operate your VoIP business according to the scenario(s) of your choice. You can offer pre-paid or post-paid calls in your call shop, and sell calling cards Use CSB with CallExchange termination, or as a stand-alone billing system for an...