Abstract
This paper presents a novel lattice-based cryptography implementation in the Transport Layer Security (TLS) protocol to enhance the security of traffic transmission in IP networks that use the Asterisk IP PBX platform. Given the growing threat of quantum computing, traditional cryptographic methods are becoming increasingly vulnerable. To address this issue, the study leverages post-quantum cryptography by developing a modified TLS protocol using lattice-based cryptographic algorithms. The performance of the system was evaluated in terms of security, computational efficiency, and real-time communication. The study shows that the proposed lattice-based TLS implementation effectively secures traffic transmission in IP PBX networks, offering a robust solution against both current and future quantum threats.