Telos ZephyrExpress - Manual (Page 162)

9-20 TROUBLESHOOTING
called user or by the network. In the case of user determined user busy it is noted that the
user equipment is compatible with the call.
Cause No. 18 - No far end response
This cause is used when a called party does not respond to a call establishment message
with either an alerting or connect indication within a prescribed period of time.
Cause No. 19 - No answer
This cause is used when the called party has been alerted (has provided an alerting indi-
cation) but does not respond with a connect indication within a prescribed period.
Cause No. 21 - Call rejected
This cause indicates that the equipment sending this cause does not wish to accept this
call, although it could have accepted the call because the equipment sending this cause
is neither busy nor incompatible.
This cause may also be generated by the network, indicating that the call was cleared due
to a supplementary service constraint.
Cause No. 22 - Number changed
This cause is returned to a calling party when the called party number indicated
by the calling party is no longer assigned, The new called party number may optionally
be included in the diagnostic field. If a network does not support this cause, an unas-
signed number message (cause number 1) may appear instead.
Cause No. 26 - Non-selected user clearing
This cause indicates the user has not been awarded the incoming call.
Cause No. 27 - Dest. out of order
This cause indicates that the destination indicated by the user cannot be reached because
the interface to the destination is not functioning correctly. The term “not functioning
correctly” indicates that a signal message was unable to be delivered to the remote party;
e.g. a physical layer or data link layer failure at the remote party, or user equipment off-
line.
Cause No. 28 - Incorrect number (Invalid number format, address incomplete)
This cause indicates that the called party cannot be reached because the called party
number is not in a valid format or is not complete.
Cause No. 29 - Facility rejected/Special intercept announcement: undefined code
This cause indicates that the user cannot use this feature
or
This cause value indicates that a user in a special business group (i.e. Centrex) dialed an
undefined code