3Com VCX V7122 User Manual page 236

SIP
Description
Response
414 Request URI too long
415 Unsupported media type
420 Bad extension
480 Temporarily unavailable
Call leg/transaction doesn't
481*
exist
482* Loop detected
483 Too many hops
484 Address incomplete
485 Ambiguous
486 Busy here
488 Not acceptable here
500 Server internal error
501 Not implemented
502 Bad gateway
503 Service unavailable
504 Server timeout
505* Version not supported
600 Busy everywhere
603 Decline
604 Does not exist anywhere
606* Not acceptable
236
ISDN Release
Description
Reason
127 Interworking
79 Service/option not implemented
127 Interworking
18 No user responding
127 Interworking
127 Interworking
25 Exchange – routing error
28 Invalid number format
1 Unallocated number
17 User busy
31 Normal, unspecified
41 Temporary failure
38 Network out of order
38 Network out of order
41 Temporary failure
102 Recovery on timer expiry
127 Interworking
17 User busy
21 Call rejected
1 Unallocated number
38 Network out of order
3Com VCX V7122 SIP VoIP Gateway User Manual