This document is a guide that presents the T-CPR Quality Improvement Toolkit, which is designed to enhance the skills and confidence of telecommunicators (TCs) in emergency medical services. The toolkit compiles best practices and resources aimed at improving the delivery of telecommunicator cardiopulmonary resuscitation (T-CPR) instructions, which are crucial for increasing survival rates in cardiac arrest situations. It outlines the challenges faced in delivering CPR instructions over the phone and provides a structured framework for simulation training and case reviews. The toolkit includes performance goals based on industry standards, assessment tools, and simulation scenarios to facilitate effective training. Additionally, it emphasizes the importance of TCs in the cardiac arrest chain of survival and aims to equip emergency call centers with the necessary tools to improve outcomes for out-of-hospital cardiac arrest events. Resources such as the T-CPR Course and assessment tools are also included to support ongoing education and quality improvement efforts.