
Dynamix DW-E
125
SIP to PSTN Cause Code Mapping
IP Event Description
PSTN Cause
Code
404 Not found No route to destination 3
486 User here User bus
17
18
480 Temporarily
unavailable
No user response
20
403 Forbidden Call Re
ected 21
410 Gone Number chan
ed 22
404 Not found Unallocated numbe
3
484 Address
incomplete
Address incomplete 28
501 Not
implemented
Service or option not implemented 79
404 Not found Unallocated numbe
3
503 Service
unavailable
Service or option unavailable 63
403 Forbidden Bearer Capabilit
not authorized 21
403 Forbidden Service or option not implemented 79
501 Not
implemented
Service or option not implemented 79
400 Bad re
ues
Inte
-workin
, uns
ecified 95
408 Request timeou
Recover
on Expires timeout 102
400 Bad re
ues
Protocol erro
111
500 Internal server
erro
Any code other than those listed above: 127
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