Enterasys csx5500 用户指南
C
AUSE
C
ODES
T
ABLE
The following table provides Q.931 cause codes and their corresponding meanings. Cause codes
may appear in Call Trace Messages.
may appear in Call Trace Messages.
Dec Value
Hex Value
Q.931 Cause
0
0
valid cause code not yet received
1
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.
Indicates that, although the ISDN number was presented in a valid
format, it is not currently assigned to any destination equipment.
2
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.
Indicates that the ISDN exchange was asked to route the call through
an intermediate network that is unrecognized.
3
3
no route to destination
Indicates that the call was actually routed through a network that
does not serve the destination address.
Indicates that the call was actually routed through a network that
does not serve the destination address.
4
4
send special information tone
5
5
misdialed trunk prefix
6
6
channel unacceptable
Indicates that the quality of service provided by the specified
channel was insufficient to accept the connection.
Indicates that the quality of service provided by the specified
channel was insufficient to accept the connection.
7
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.
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
8
prefix 0 dialed but not allowed
9
9
prefix 1 dialed but not allowed
10
A
prefix 1 dialed but not required
11
B
more digits received than allowed, call is proceeding
16
10
normal call clearing or normal disconnect
Reports the normal clearing of a call. No action required.
Reports the normal clearing of a call. No action required.
17
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.
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.
18
12
no device responding
Indicates that the connection could not be completed because the
destination failed to respond to the call.
Indicates that the connection could not be completed because the
destination failed to respond to the call.