OBD is an automated voice dialer application that automates the functionality of outbound call operations. In situations where outbound calls need to be made with relatively lower levels of interaction except passing the campaign message, the OBD can provide extremely effective and efficient mode of campaigning. The system automatically dials out calls to a list of mobile users provided by the telecom operator. OBD has a time-tested and proven track record to promote and sell value added services like Caller Ring Back Tones (CRBT), Stock Market updates, Health Tips, News, Jokes, etc.OBD utilizes the Interactive Voice Response (IVR) calling system where the customer first listens to the pre-recorded audio promotion, and then punches corresponding DTMF (Dual-Tone Multi-Frequency) keys from the mobile keypad to activate a service