Manual

PSTN Fallback Enhancement
call fallback reject-cause-code
7
Cisco IOS Release 12.2(2)XA
Table 1 ITU Cause Codes, Messages, and Meanings
Cause Code Displayed Message Meaning
1 Unallocated (unassigned)
number
Indicates that the called party cannot be reached
because, although the called party number is in a
valid format, it is not currently allocated (assigned).
2 No route to specified transit
network (national use)
Indicates that the equipment that is sending this
cause has received a request to route the call
through a particular transit network that it does not
recognize. The equipment that is sending this cause
does not recognize the transit network either
because the transit network does not exist or
because that particular transit network, while it
does exist, does not serve the equipment that is
sending this cause. This cause is supported on a
network-dependent basis.
3 No route to destination Indicates that the called party cannot be reached
because the network through which the call has
been routed does not serve the destination desired.
This cause is supported on a network-dependent
basis.
4 Send special information tone Indicates that the called party cannot be reached for
reasons that are of a long-term nature and that the
special information tone should be returned to the
calling party.
5 Misdialed trunk prefix (national
use)
Indicates the erroneous inclusion of a trunk prefix
in the called party number.
6 Channel unacceptable Indicates that the channel most recently identified
is not acceptable to the sending entity for use in this
call.
7 Call awarded and being
delivered in an established
channel
Indicates that the user has been awarded the
incoming call and that the incoming call is being
connected to a channel that is already established to
that user for similar calls (for example,
packet-mode X.25 virtual calls).
8 Preemption Indicates that the call is being preempted.
9 Preemption - circuit reserved for
reuse
Indicates that the call is being preempted and that
the circuit is reserved for reuse by the preempting
exchange.
16 Normal call clearing Indicates that the call is being cleared because one
of the users involved in the call has requested that
the call be cleared. Under normal situations, the
source of this cause is not the network.