SIP/TCP
A list of request and response codes for SIP/TCP used in ATA and alarms. Each list is searchable and sortable.
 
Requests
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
Responses
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