Outbound Dialer (OBD) is an automated phone call that essentially relays a pre-recorded voice message to the customer. It can be sent to an end number of users at any given point of time in the language of choice.
Bulk voice calls can be used for other purposes as well, like political campaigns, customer surveys, mobile marketing, meeting alerts, wake up calls, stock alerts, EMI alerts, medicine reminders and so on. Bulk Voice SMS are pre-recorded voice messages to a mobile or landline networks across the country.