- Session Initiation Protocol Tutorial
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SIP - 2xx: Success Responses
This class of responses is meant for indicating that a request has been accepted. It includes the following responses −
200 OK
200 OK is used to accept a session invitation.
It indicates a successful receipt of a request.
202 Accepted
202 Accepted indicates that the UAS has received and understood the request, but that the request may not have been authorized or processed by the server.
It is commonly used in responses to SUBSCRIBE, REFER methods.
session_initiation_protocol_response_codes.htm
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