202
SIP
202 Accepted
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
이 코드를 보게 되는 경우
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
해결 방법
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.