SIP
413 Request Entity Too Large
The server is refusing to process the request because the message body is larger than the server is willing to accept.
이 코드를 보게 되는 경우
When sending a SIP message with a body (SDP, XML, etc.) that exceeds the server's size limit.
해결 방법
Reduce the size of the message body. For SDP, minimize codec offers or remove unnecessary attributes.