Reference, Isdn disconnection cause – ZyXEL Communications P-202 User Manual
Page 406
P-202H Plus v2 Support Notes
Reference
1. ISDN Disconnection Cause
This source of this ISDN cause is from ETS 300 102-1 Annex G. You can
download the complete ETS 300 102-1 standard, the layer 3 basic call control,
.
Normal Class
Code Disconnection Cause
1 Unallocated
2
No route to specified transit network
3
No route to destination
6 Channel
unacceptable
7
Call awarded and being delivered in an established
channel
16
Nomal call clearing
17 User
busy
18
No user responding
19
No answer from user (user alerted)
21 Call
rejected
22 Number
changed
27
Destination out of order
28
Invalid formate (address incomplete)
29 Facility
rejected
30
Response to status enquiry
31 Normal,
unspecified
Resource Unavailable Class
34
No circuit/channel available
38
Network out of order
41 Temporary
failure
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