Appendix D: ISDN Cause Numbers
257
T207M / T208M User Guide
19
no answer from user (user alerted)
call later
21
call rejected
call later
22
number changed
check number and call again*
23
reverse charging rejected
24
call suspended
25
call resumed
26
non-selecting user clearing
27
destination out of order
call later
28
invalid format (address incomplete)
check number and call again*
29
facility rejected
notify system administrator
30
response to status inquiry
31
normal unspecified
no action*
33
circuit out of order
34
no circuit/channel available
call later*
35
destination unattainable
37
degraded service
38
network out of order
wait and call later
39
transit delay range cannot be achieved
Cause #
CODE MEANING
ACTION