Version 7.2  575  Mediant 800B Gateway & E-SBC 
 
User's Manual   25. Manipulation 
SIP Response
Description 
ISDN Release 
Reason 
Description 
404  Not found  1  Unallocated number 
405  Method not allowed  63  Service/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 
409  Conflict  41  Temporary failure 
410  Gone  22  Number changed w/o diagnostic 
411  Length required  127  Interworking 
413  Request entity too long  127  Interworking 
414  Request URI too long  127  Interworking 
415  Unsupported media type  79  Service/option not implemented 
417  Unknown Resource Priority  127  Interworking 
420  Bad extension  127  Interworking 
480  Temporarily unavailable  18  No user responding 
481* 
Call leg/transaction doesn’t 
exist 
127  Interworking 
482*  Loop detected  127  Interworking 
483  Too many hops  127  Interworking 
484  Address incomplete  28  Invalid number format 
485  Ambiguous  1  Unallocated number 
486  Busy here  17  User busy 
488  Not acceptable here  31  Normal, unspecified 
489  Bad Event  31  Normal, unspecified 
491  Request Pending  31  Normal, unspecified 
500  Server internal error  41  Temporary failure 
501  Not implemented  38  Network out of order 
502  Bad gateway  38  Network out of order 
503  Service unavailable  41  Temporary failure 
504  Server timeout  102  Recovery on timer expiry 
505*  Version not supported  127  Interworking 
600  Busy everywhere  17  User busy 
603  Decline  21  Call rejected 
604  Does not exist anywhere  1  Unallocated number 
606*  Not acceptable  38  Network out of order