10. Interaction with Forward Error Correction mechanisms

The default processing when using Forward Error Correction (e.g., RFC 2733) processing with SRTP SHALL be to perform FEC processing prior to SRTP processing on the sender side and to perform SRTP processing prior to FEC processing on the receiver side. Any change to this ordering (reversing it, or, placing FEC between SRTP encryption and SRTP authentication) SHALL be signaled out of band.