Просмотр исходного текста страницы ISUP - SIP: соответствие причин отбоя (CV)

=RFC 3398, ISUP to SIP Mapping, December 2002=

== Прямое направление ==

 If a cause value other than those listed below is received, the
   default response '500 Server internal error' SHOULD be used.
 
=== Normal event===

   ISUP Cause value                        SIP response
   ----------------                        ------------
   1  unallocated number                   404 Not Found
   2  no route to network                  404 Not found
   3  no route to destination              404 Not found
   16 normal call clearing                 --- (*)
   17 user busy                            486 Busy here
   18 no user responding                   408 Request Timeout
   19 no answer from the user              480 Temporarily unavailable
   20 subscriber absent                    480 Temporarily unavailable
   21 call rejected                        403 Forbidden (+)
   22 number changed (w/o diagnostic)      410 Gone
   22 number changed (w/ diagnostic)       301 Moved Permanently
   23 redirection to new destination       410 Gone
   26 non-selected user clearing           404 Not Found (=)
   27 destination out of order             502 Bad Gateway
   28 address incomplete                   484 Address incomplete
   29 facility rejected                    501 Not implemented
   31 normal unspecified                   480 Temporarily unavailable
 
   (*) ISDN Cause 16 will usually result in a BYE or CANCEL
 
   (+) If the cause location is 'user' than the 6xx code could be given
   rather than the 4xx code (i.e., 403 becomes 603)
 
   (=) ANSI procedure - in ANSI networks, 26 is overloaded to signify
   'misrouted ported number'.  Presumably, a number portability dip
   should have been performed by a prior network.  Otherwise cause 26 is
   usually not used in ISUP procedures.
 
   A REL with ISDN cause 22 (number changed) might contain information
   about a new number where the callee might be reachable in the
   diagnostic field.  If the MGC is able to process this information it
   SHOULD be added to the SIP response (301) in a Contact header.
 
===Resource unavailable===

   This kind of cause value indicates a temporary failure.  A 'Retry-
   After' header MAY be added to the response if appropriate.
 
   ISUP Cause value                        SIP response
   ----------------                        ------------
   34 no circuit available                 503 Service unavailable
   38 network out of order                 503 Service unavailable
   41 temporary failure                    503 Service unavailable
   42 switching equipment congestion       503 Service unavailable
   47 resource unavailable                 503 Service unavailable
 
===Service or option not available===
 
   This kind of cause value indicates that there is a problem with the
   request, rather than something that will resolve itself over time.
 
   ISUP Cause value                        SIP response
   ----------------                        ------------
   55 incoming calls barred within CUG     403 Forbidden
   57 bearer capability not authorized     403 Forbidden
   58 bearer capability not presently      503 Service unavailable
      available
 
===Service or option not available===
 
   ISUP Cause value                        SIP response
   ----------------                        ------------
   65 bearer capability not implemented    488 Not Acceptable Here
   70 only restricted digital avail        488 Not Acceptable Here
   79 service or option not implemented    501 Not implemented
 
===Invalid message===
 
   ISUP Cause value                        SIP response
   ----------------                        ------------
   87 user not member of CUG               403 Forbidden
   88 incompatible destination             503 Service unavailable
 
 
===Protocol error===

   ISUP Cause value                        SIP response
   ----------------                        ------------
   102 recovery of timer expiry            504 Gateway timeout
   111 protocol error                      500 Server internal error
 
===Interworking===
 
   ISUP Cause value                        SIP response
   ----------------                        ------------
   127 interworking unspecified            500 Server internal error



== Обратное направление ==


 Just as there are certain ISDN cause codes that are ISUP-specific and
   have no corollary SIP action, so there are SIP status codes that
   should not simply be translated to ISUP - some SIP-specific action
   should be attempted first.  See the note on the (+) tag below.
 
   Response received                     Cause value in the REL
   -----------------                     ----------------------
   400 Bad Request                       41 Temporary Failure
   401 Unauthorized                      21 Call rejected (*)
   402 Payment required                  21 Call rejected
   403 Forbidden                         21 Call rejected
   404 Not found                          1 Unallocated number
   405 Method not allowed                63 Service or option
                                            unavailable
   406 Not acceptable                    79 Service/option not
                                            implemented (+)
   407 Proxy authentication required     21 Call rejected (*)
   408 Request timeout                  102 Recovery on timer expiry
   410 Gone                              22 Number changed
                                            (w/o diagnostic)
   413 Request Entity too long          127 Interworking (+)
   414 Request-URI too long             127 Interworking (+)
   415 Unsupported media type            79 Service/option not
                                            implemented (+)
   416 Unsupported URI Scheme           127 Interworking (+)
   420 Bad extension                    127 Interworking (+)
   421 Extension Required               127 Interworking (+)
   423 Interval Too Brief               127 Interworking (+)
   480 Temporarily unavailable           18 No user responding
   481 Call/Transaction Does not Exist   41 Temporary Failure
   482 Loop Detected                     25 Exchange - routing error
   483 Too many hops                     25 Exchange - routing error
   484 Address incomplete                28 Invalid Number Format (+)
   485 Ambiguous                          1 Unallocated number
   486 Busy here                         17 User busy
   487 Request Terminated               --- (no mapping)
   488 Not Acceptable here              --- by Warning header
   500 Server internal error             41 Temporary failure
   501 Not implemented                   79 Not implemented, unspecified
   502 Bad gateway                       38 Network out of order
   503 Service unavailable               41 Temporary failure
   504 Server time-out                  102 Recovery on timer expiry
   504 Version Not Supported            127 Interworking (+)
   513 Message Too Large                127 Interworking (+)
   600 Busy everywhere                   17 User busy
   603 Decline                           21 Call rejected
   604 Does not exist anywhere            1 Unallocated number
   606 Not acceptable                   --- by Warning header
 


[[Категория:SIP]]
[[Категория:ОКС7]]