What are the realistic numbers of calls that a single phone agent?

This is a tough question to answer without data to support my answer. It will always depend on what type of support you are taking calls for and dependent on what degree the support. But based on my experience as a call center agent in a customer service setup, average calls can be between60-75 calls. Definitely, the bigger the customer-base of a company, that also affects the number of calls forecasted. There are also a lot of variables to consider in being able to determine the number of calls an agent can take. There is staffing, calls forecasted, number of seats that the center can accommodate per interval, etc.