The solution delivers a number of features historically only available on public switched telephone network (PSTN) networks, including carrier pre-selection, alternate call routing, least-cost routing, calling line presentation/restriction, call barring, white list/black list, and emergency calls. In addition, it offers great flexibility, allowing service providers to deploy just the CRESTEL Voucher Management System Module for Calling card business model support or the complete CRESTEL Convergent Billing Solution. |