An X.509 public key certificate is used to identify the Avaya SBC when performing a TLS handshake for incoming and outgoing connections. The EMS GUI provides several options to manage certificates of this type. In general, the corresponding private key cannot be managed directly from the EMS GUI and can only be uploaded to the EMS when uploading its public counterpart.

Avaya SBC supports certificates with 2048-bit or 4096-bit keys.