The document provides information on how to start a calling card business using IPsmarx's SIP-based calling card platform. It discusses conducting a market analysis which shows strong growth expected in the prepaid calling card industry. It then outlines steps for setting up the business through IPsmarx, including obtaining phone numbers, software training, and partnering with IPsmarx as the carrier. Additional modules like home service, e-store, and auto-recharge are described. Benefits of the IPsmarx platform include lower startup costs through DID technology and increased functionality.