SIP Response Messages
SIP Response Messages
SIP Response
Messages
Category
For More Information
1xx and 2xx Responses
3xx Responses
4xx Responses
The VOCAL system supports all SIP response messages:
•1xx Responses - Information Responses
•2xx Responses - Successful Responses
•3xx Responses - Redirection Responses
•4xx Responses - Request Failures Responses
•5xx Responses - Server Failure Responses
•6xx Responses - Global Failure Responses
Refer to the SIP RFC 2543 for a list of the status codes and their reason codes:
http://www.ietf.org/rfc/rfc2543.txt
1xx SIP response message are informational responses:
•100 Trying
•180 Ringing
•181 Call Is Being Forwarded
•182 Queued
•183 Session Progress
•200 OK
3xx SIP response message are redirection responses:
•300 Multiple Choices
•301 Moved Permanently
•302 Moved Temporarily
•303 See Other
•305 Use Proxy
•380 Alternative Service
4xx SIP response message are client error responses:
•400 Bad Request
•401 Unauthorized
•402 Payment Required
•403 Forbidden
•404 Not Found
•405 Method Not Allowed
•406 Not Acceptable
•407 Proxy Authentication Required
•408 Request Timeout
