Yealink SIP-T38G

Appendix
337
1xx Response
Supported
Notes
180 Ringing
Yes
181 Call Is Being Forwarded
Yes
183 Session Progress
Yes
2xx Response—Successful Responses
2xx Response
Supported
Notes
200 OK
Yes
202 Accepted
Yes
In REFER transfer.
3xx Response—Redirection Responses
3xx Response
Supported
Notes
300 Multiple Choices
Yes
301 Moved Permanently
Yes
302 Moved Temporarily
Yes
4xx Response—Request Failure Responses
4xx Response
Supported
Notes
400 Bad Request
Yes
401 Unauthorized
Yes
402 Payment Required
Yes
403 Forbidden
Yes
404 Not Found
Yes
405 Method Not Allowed
Yes
406 Not Acceptable
No
407 Proxy Authentication
Required
Yes
408 Request Timeout
Yes
409 Conflict
No
410 Gone
No
411 Length Required
No