Technical data

10 Connection
91
ARGUS 3u plus/3u NT
Other causes are not shown in clear text, rather as decimal
codes (see Appendix B and C).
28 Wrong number Wrong call number format or
call number is incomplete
31 Norm. clearing Unspecified “normal class”
(Dummy)
34 No B-chan.avail. No circuit / B-channel
available
44 Req.chan.unavail Requested B-channel not
available
50 Req.fac.not subs Requested supplementary
service (facility) not
subscribed
57 BC not authoriz. Requested bearer capability is
not enabled
63 Srv./opt.n.avail Unspecified for “Service
not available” or “Option not
available”
69 Req.fac.not impl. Requested facility is not
supported
88 Incompat.
Objectives
Incompatible destination
102 Timer expired Error handling routine started
due to time-out
111 Protocol error Unspecified for ”protocol error
class”
127 Interworking err Unspecified for
“interworking class”