Types of SIP Response Classes Supported in ScreenOS Devices
SIP responses provide status information about
SIP transactions and include a response code and a reason phrase.
SIP responses are grouped into the following classes:
- Informational (100 to 199)—Request received, continuing
to process the request.
- Success (200 to 299)—Action successfully received,
understood, and accepted.
- Redirection (300 to 399)—Further action required
to complete the request.
- Client Error (400 to 499)—Request contains bad syntax
or cannot be fulfilled at this server.
- Server Error (500 to 599)—Server failed to fulfill
an apparently valid request.
- Global Failure (600 to 699)—Request cannot be fulfilled
at any server.
Table 1 provides a complete list of current SIP responses,
all of which are supported on Juniper Networks security devices.
Table 1: SIP Responses
Class
|
Response Code-Reason Phrase
|
Response Code-Reason Phrase
|
Response Code-Reason Phrase
|
Informational
|
100 Trying
|
180 Ringing
|
181 Call is being forwarded
|
182 Queued
|
183 Session progress
|
|
Success
|
200 OK
|
202 Accepted
|
|
Redirection
|
300 Multiple choices
|
301 Moved permanently
|
302 Moved temporarily
|
305 Use proxy
|
380 Alternative service
|
|
Client Error
|
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 time-out
|
409 Conflict
|
410 Gone
|
411 Length required
|
413 Request entity too large
|
414 Request-URL too large
|
415 Unsupported media type
|
420 Bad extension
|
480 Temporarily not available
|
481 Call leg/transaction does not exist
|
482 Loop detected
|
483 Too many hops
|
484 Address incomplete
|
485 Ambiguous
|
486 Busy here
|
487 Request canceled
|
488 Not acceptable here
|
|
|
Server Error
|
500 Server internal error
|
501 Not implemented
|
502 Bad gateway
|
502 Service unavailable
|
504 Gateway time-out
|
505 SIP version not supported
|
Global Failure
|
600 Busy everywhere
|
603 Decline
|
604 Does not exist anywhere
|
606 Not acceptable
|
|
|
Published: 2009-08-23
