21.4.26 488 Not Acceptable Here 21.4.26 488此处不可接受 The response has the same meaning as 606 (Not Acceptable), but only applies to the specific resource addressed by the Request-URI and the request may succeed elsewhere. 该响应具有与606(不可接受)相同的含义,但仅适用于由Request-URI寻址的特定资源,并且该请求可以在其他地方成功。 A message body containing a description of media capabilities MAY be present in the response, which is formatted according to the Accept header field in the INVITE (or application/sdp if not present), the same as a message body in a 200 (OK) response to an OPTIONS request.
响应中可能存在包含媒体功能描述的消息体,该消息体根据INVITE中的Accept报头字段进行格式化(如果不存在,则为application/sdp),与OPTIONS请求的200(OK)响应中的消息体相同。
文章讨论了HTTP响应中NotAcceptable的状态,它只对Request-URI指定的资源有效。响应可能包含媒体能力描述,格式遵循INVITE或OPTIONS请求的200(OK)响应中的Acceptheader。
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