SIP 200 OK vs 406 Not Acceptable
SIP 200 (OK) is a 2xx Success response, while 406 (Not Acceptable) is a 4xx Client Failure response. 200 indicates that the request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully. In contrast, 406 means that the resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
Описание
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
Когда вы это видите
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
Как исправить
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
Описание
The resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
Когда вы это видите
When content negotiation fails — the server cannot produce a response matching the Accept header fields in the request.
Как исправить
Review the Accept headers in your request and broaden the acceptable content types.
Ключевые различия
200 is a 2xx Success response, while 406 is a 4xx Client Failure response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 406: The resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
You encounter 200 when when a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
You encounter 406 when when content negotiation fails — the server cannot produce a response matching the Accept header fields in the request.
Когда что использовать
For 200 (OK): No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions. For 406 (Not Acceptable): Review the Accept headers in your request and broaden the acceptable content types.