What is required to use SRTP within 3CX?

Using Secure Real-Time Transport Protocol (SRTP) within 3CX requires a TLS certificate and key because SRTP is designed to provide encryption, message authentication, and integrity for voice over IP communications. The encryption and security features of SRTP are dependent on establishing a secure signaling protocol, typically done through Transport Layer Security (TLS).

To utilize SRTP, a properly configured TLS certificate is essential. This certificate ensures that data transmitted during calls is encrypted and secure from eavesdropping or tampering. Without a TLS certificate and key, the communication cannot be securely established, and SRTP cannot be effectively used.

In contrast, merely changing settings in the configuration or the lack of special requirements would not be sufficient, as these aspects do not establish the necessary secure environment for SRTP. Additionally, SRTP does not require additional hardware directly related to its functioning within the 3CX system; it operates over the existing infrastructure once appropriately configured with the TLS certificate and key.