With the passage of time, the services of call center has been evolved from a voice-based industry to a multi-channel industry. Call centre services have become an integral part of every business operation and the essential call center services are always looking to streamline and manage their operations and increase their profitability. A call center engages in telemarketing services which consist of answering incoming phone calls from customers or making outgoing phone calls to the customers to enhance the purpose of marketing and brand promotion.