AudioCodes Mediant 800 MSBG - Fixed Mapping of ISDN Release Reason to SIP Response

Version 6.2 639 February 2011
SIP User's Manual 10. Advanced PSTN Configuration
10.2.2 Fixed Mapping of ISDN Release Reason to SIP Response
The following table describes the mapping of ISDN release reason to SIP response.
Table 10-1: Mapping of ISDN Release Reason to SIP Response
ISDN Release
Reason
Description
SIP
Response
Description
1 Unallocated number 404 Not found
2 No route to network 404 Not found
3 No route to destination 404 Not found
6 Channel unacceptable 406
*
Not acceptable
7
Call awarded and being delivered in an
established channel
500 Server internal error
16 Normal call clearing -* BYE
17 User busy 486 Busy here
18 No user responding 408 Request timeout
19 No answer from the user 480 Temporarily unavailable
21 Call rejected 403 Forbidden
22 Number changed w/o diagnostic 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
30 Response to status enquiry 501* Not implemented
31 Normal unspecified 480 Temporarily unavailable
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
43 Access information discarded 502* Bad gateway
44 Requested channel not available 503* Service unavailable
47 Resource unavailable 503 Service unavailable
49 QoS unavailable 503* Service unavailable
50 Facility not subscribed 503* Service unavailable
55 Incoming calls barred within CUG 403 Forbidden
57 Bearer capability not authorized 403 Forbidden
58 Bearer capability not presently available 503 Service unavailable
63 Service/option not available 503* Service unavailable