SIP 199 Early Dialog Terminated vs 415 Unsupported Media Type
SIP 199 (Early Dialog Terminated) is a 1xx Provisional response, while 415 (Unsupported Media Type) is a 4xx Client Failure response. 199 indicates that a UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs. In contrast, 415 means that the server is refusing the request because the message body is in a format not supported by the server for the requested method.
Beschreibung
A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
Wann Sie es sehen
In forked call scenarios when one of the forked branches is cancelled because another branch was answered.
Wie man es behebt
No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully.
Beschreibung
The server is refusing the request because the message body is in a format not supported by the server for the requested method.
Wann Sie es sehen
When the Content-Type of the request body is not supported. For INVITE, this often means an unsupported SDP format.
Wie man es behebt
Check the Accept header in the response to see supported media types. Use a compatible Content-Type in your request.
Wesentliche Unterschiede
199 is a 1xx Provisional response, while 415 is a 4xx Client Failure response.
SIP 199: A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
SIP 415: The server is refusing the request because the message body is in a format not supported by the server for the requested method.
You encounter 199 when in forked call scenarios when one of the forked branches is cancelled because another branch was answered.
You encounter 415 when when the Content-Type of the request body is not supported. For INVITE, this often means an unsupported SDP format.
Wann welchen verwenden
For 199 (Early Dialog Terminated): No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully. For 415 (Unsupported Media Type): Check the Accept header in the response to see supported media types. Use a compatible Content-Type in your request.