Isdn Cause Codes; Table 5. Isdn Cause Codes - Comtrol InterChange VS 3000 Series Installation And Configuration Manual

ISDN Cause Codes

This appendix lists ISDN cause codes and their definitions.
• Under Windows NT, ISDN cause codes are displayed and logged by
the ISDN Monitor program, which is installed automatically when
you install VS-Link. For more information about ISDN Monitor,
see the isdndiag readme and ISDN Monitor help files.
• Under Novell NetWare, ISDN cause codes are sent to the console as
part of driver event and error messages. For more information, see
the Novell Error Codes and Messages section of this document.
The following table describes the ISDN cause codes in greater depth.
Decimal Brief Description
Unallocated
1
(unassigned) number
No route to specified
2 transit network
(national used)
No route to
3
destination
Send special
4
information tone
Misdialed trunk
5
prefix (national use)
Channel unacceptable The identified channel is not acceptable
6
Call awarded being
7 delivered in an
established channel
8 Preemption

Table 5. ISDN Cause Codes

The called party cannot be reached. (The
number has a valid format but has not
been assigned).
The sending equipment has received a
request to route the call through a transit
network which it does not recognize,
either because the network does not exist
or because the network exists but does
not serve the sending equipment.
The called party cannot be reached
because the network does not serve the
destination.
The called party cannot be reached for
reasons of a long-term nature. The
"special information" tone is returned to
the calling party.
Wrong trunk prefix in the called party
number.
to the sending entity for use in this call.
The incoming call is being connected to a
channel already configured for that user
(for example, packet-mode x.25 virtual
calls).
The call is being pre-empted.
Expanded Description
55