Cabletron Systems SmartSwitch 9W006 User Manual page 273

C C
AUSE ODES
The following table provides Q.931 cause codes and their corresponding meanings. Cause codes
may appear in Call Trace Messages.
Dec Value Hex Value
0
1
2
3
4
5
6
7
8
9
10
11
16
17
18
T
ABLE
Q.931 Cause
0 valid cause code not yet received
1 unallocated (unassigned number)
Indicates that, although the ISDN number was presented in a valid
format, it is not currently assigned to any destination equipment.
2 no route to specified transit network (WAN)
Indicates that the ISDN exchange was asked to route the call through
an intermediate network that is unrecognized.
3 no route to destination
Indicates that the call was actually routed through a network that
does not serve the destination address.
4 send special information tone
5 misdialed trunk prefix
6 channel unacceptable
Indicates that the quality of service provided by the specified
channel was insufficient to accept the connection.
7 call awarded and being delivered in an established channel
Indicates that the device has been awarded an incoming call and that
the call is being connected to a channel that has already been
established for similar calls.
8 prefix 0 dialed but not allowed
9 prefix 1 dialed but not allowed
A prefix 1 dialed but not required
B more digits received than allowed, call is proceeding
10 normal call clearing or normal disconnect
Reports the normal clearing of a call. No action required.
11 device busy
Indicates that the called system has acknowledged the connection
request, but is unable to accept the call because the B-channels are
currently in use.
12 no device responding
Indicates that the connection could not be completed because the
destination failed to respond to the call.