Calling Card System Our calling card system is a complete solution for customers looking to rebrand their own calling cards. We are able to offer the following: Multi-level Service Agent Prepaid Cards (Calling to phone, PC to Phone) Mobile VOIP service (SIP enabled mobile phone) Self-Administrative control Automated customer balance inquiry Customer balance control Minutes and calling rates control Support IVR Greeting, in English, Putonghua, Spanish For more information, please inquire at info@ipgo.net