470
SIP
470 Consent Needed
The request cannot be fulfilled because the source has not been granted consent by the recipient. Used in consent-based communications (RFC 5360).
이 코드를 보게 되는 경우
When attempting to communicate with a user who has not granted permission for the calling party to reach them.
해결 방법
Request consent through a separate mechanism. The recipient must explicitly grant permission for future communications.