If you want to generate your own CSR for use with the Avaya SBC, the following settings are recommended:

• Private Key Strength: 2048-bit or greater — Avaya SBC supports certificates with 2048-bit or 4096-bit keys

• Key Usage: keyUsage=keyEncipherment,digitalSignature,non-repudiation

• Extended Key Usage: extendedKeyUsage=serverAuth,clientAuth