Well, there is no fixed number. It depends on multiple factors including the industry-type, the level of product/service sophistication, and a company’s sales process. It would also depend on whether you are engaging employees to do inbound calling or outbound calling. When low-end outbound calls are involved, as many as 15 calls per hour can be made whereas in case of high-end outbound calls, just 2 calls per hour may be accommodated. For inbound calls as well, the same theory holds good. For example, if an executive need to handle simple tasks such as resetting of passwords, he may handle 10 calls every hour. On the other hand, if he /she needs to address inquiries related to 401K mutual fund, he/she might end up handling just 2 calls per hour.