Request ID | Explanation |
|---|---|
ACK | ACK |
BYE | BYE |
CANCEL | CANCEL |
INFO | INFO |
INVITE | INVITE |
MESSAGE | MESSAGE |
NOTIFY | NOTIFY |
OPTIONS | OPTIONS |
PRACK | PRACK |
PUBLISH | PUBLISH |
REFER | REFER |
REGISTER | REGISTER |
SERVICE | SERVICE |
SUBSCRIBE | SUBSCRIBE |
UPDATE | UPDATE |
Response ID | Explanation |
|---|---|
100 | Trying |
180 | Ringing |
181 | Call being forwarded |
182 | Queued |
183 | Session progress |
200 | OK |
300 | Multiple choices |
301 | Moved permanently |
302 | Moved temporarily |
303 | See other |
305 | Use proxy |
380 | Alternative service |
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 |
409 | Conflict |
410 | Gone |
411 | Length required |
413 | Request entity too long |
414 | Request URI (URL) too long |
415 | Unsupported media type |
420 | Bad extension |
480 | Temporarily unavailable |
481 | Call leg does not exist |
482 | Loop detected |
483 | Too many hops |
484 | Address incomplete |
485 | Address ambiguous |
486 | Busy here |
487 | Request cancelled |
488 | Not acceptable here |
500 | Internal server error |
501 | Not implemented |
502 | Bad gateway |
503 | Service unavailable |
504 | Gateway timeout |
505 | Version not implemented |
580 | Precondition Failed |
600 | Busy everywhere |
603 | Decline |
604 | Does not exist anywhere |
606 | Not acceptable |