22 Appendix
ARGUS 145
PLUS
349
C) CAUSE-Messages – 1TR6 Protocol
Dec. Cause
Description
01
Invalid call reference value
Invalid call reference value
03
Bearer service not
implemented
The service is not available in the central office or at another
location in the network or the service has not been subscribed.
07
Call identity does not exist
Unknown call identity
10
No channel available
No further B-channel is free on the subscriber’s access.
(only significant locally)
16
Requested facility not
implemented
The entered FAC-Code is unknown in this network.
17
Requested facility not
subscribed
The requested facility is not available, because the initiating or
the remote subscriber is not authorized.
32
Outgoing calls barred
Outgoing calls are not possible due to the barring
33
User access busy
If the sum of the number of free B-channels, the number of
occupied B-channels, the number of awarded B-channels and
the number of calls without B-channel assignment equals four,
new incoming calls will be cleared from the network. The calling
subscriber receives a DISC with the cause “user access busy“
(= 1. busy) and a busy signal.
34
Negative CUG comparison
A connection is not possible due to a negative CUG (GBG)
comparison.
35
Non-existent CUG
This CUG (GBG) does not exist
37
Communication link as SPV
not permitted
A connection is not possible, since for example, the call number
check was negative
53
Destination not obtainable
A connection cannot be made due to a wrong destination,
service or supplementary services.
56
Number changed
Subscriber-B’s call number has changed.
57
Out of order
The remote terminal is not ready.
58
No user responding
No terminal has answered the incoming SETUP or the
subscriber call was disconnected, it is assumed that someone is
present (Time-out for ringing T3AA).
59
User busy
Subscriber-B is busy
61
Incoming calls barred
The Subscriber-B has blocked incoming calls or the requested
service is not supported by Subscriber-B.
62
Call rejected
To Subscriber-A:
The requested connection is actively rejected by Subscriber-B
(by sending a DISC as answer to the incoming SETUP).
Another terminal is in the setup phase with the incoming call:
The call has already been accepted by another terminal on the
bus.
89
Network congestion
Network congested, e.g., switching equipment congestion, no
conference set free,
90
Remote user initiated
Rejected or disconnected by remote end (subscriber or
exchange).
