User`s manual

SIP User's Manual 462 Document #: LTRT-83303
Mediant 1000 & Mediant 600
ISDN Release
Reason
Description
SIP
Response
Description
95 Invalid message 503 Service unavailable
96 Mandatory information element is missing 409* Conflict
97
Message type non-existent or not
implemented
480* Temporarily not available
98
Message not compatible with call state or
message type non-existent or not
implemented
409* Conflict
99
Information element non-existent or not
implemented
480* Not found
100 Invalid information elements contents 501* Not implemented
101 Message not compatible with call state 503* Service unavailable
102 Recovery of timer expiry 408 Request timeout
111 Protocol error 500 Server internal error
127 Interworking unspecified 500 Server internal error
* Messages and responses were created because the ‘ISUP to SIP Mapping’ draft doesn’t
specify their cause code mapping.
9.2.3 Fixed Mapping of SIP Response to ISDN Release Reason
The following table describes the mapping of SIP response to ISDN release reason.
Table 9-2: Mapping of SIP Response to ISDN Release Reason
SIP Response Description
ISDN Release
Reason
Description
400
*
Bad request 31 Normal, unspecified
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/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