Description: The Gateway Control Protocol (GCP) is a protocol designed to manage and control gateways in Voice over IP (VoIP) networks. Its main function is to facilitate communication between different networks, allowing voice calls to be transmitted efficiently and with quality. GCP is responsible for establishing, modifying, and terminating communication sessions, ensuring that network resources are used optimally. This protocol is fundamental in environments where quality of service (QoS) is critical, as it allows prioritization of voice traffic over other types of data, minimizing latency and packet loss. Additionally, GCP provides mechanisms for bandwidth management and monitoring the status of gateways, contributing to a smoother and more reliable user experience. In summary, the Gateway Control Protocol is an essential tool in modern communication infrastructure, especially in applications that require high audio quality and low latency, such as VoIP communications and multimedia conferencing.