BPO stands for Business Process Outsourcing Voice based business processes BPO is becoming popular day by day. Outsourcing means a company going out to a source outside the company to buy a regular service that formerly used to be provided departmentally and internally like legal advice, computer service, advertisement, security, each provided by respective departments of the company. As a form of economic activity, outsourcing has intensified. In recent times by the growth of fast modes of communications and information technology, many services have come order BPOs such as record keeping, accountancy, banking, music recording, film editing, book transcription. Clinical advice or even teaching are being outsourced by companies in developed countries to India. Many multinational companies are outsourcing their services to India at cheaper cost with reasonable degree of skill and accuracy.