Appendix C – ISDN Cause Numbers
C-1
FlexSet 120S/280S User Guide
Appendix C - ISDN Cause Numbers
Cause #
CODE MEANING
ACTION
0
valid cause code not yet received
1
unallocated (unassigned) number
check number and call again
∗
2
no route to specified transit network
notify system manager
3
no route to destination
notify system manager
4
send special information tone
5
misdialed trunk prefix
6
channel unacceptable
notify system manager
7
call awarded and being delivered in an established channel
no action*
8
prefix 0 dialed but not allowed
9
prefix 1 dialed but not allowed
10
prefix 1 dialed but not required
11
More digits received than allowed
16
normal clearing (message displayed as text)
no action*
17
user busy (message displayed as text)
call later
∗
If the message returns frequently notify system manager