CTI allows users to access information in company databases during phone calls. A services representative can automatically receive detailed customer information in a screen-pop on their PC when a customer calls. Employees can also control their phone via a familiar, easy to use GUI. CTI is based on the Telephone Applications Programming Interface standard, which supports Microsoft Windows applications such as Microsoft Outlook.

Through CTI, IP Office can improve employee efficiency and productivity by combining telephone and PC capabilities behind one easy to use GUI. It can enhance customer contacts by providing employees with access to important information.