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84 | Section 6
party is no longer assigned, e new called party number may optionally be included in the
diagnostic field. If a network does not support this cause, cause no: 1, unallocated (unassigned)
number shall be used.
Cause No. 26 – Non-selected user clearing
is cause indicates the user has not been awarded the incoming call.
Cause No. 27 – Destination out of order
is cause indicates that the destination indicated by the user cannot be reached because the
interface to the destination is not functioning correctly. e 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)/Special
intercept announcement
is cause indicates that the called party cannot be reached because the called party number is
not in a valid format or is not complete.
or
is cause indicates the user should be returned a Special Intercept Announcement.
Cause No. 29 – Facility rejected/Special Intercept announcement: undefined code
is cause indicates a facility requested cannot be provided by the network.
or
is cause indicates that a user in a special business group (i.e. Centrex) dialed an undefined
code.
Cause No. 30 – Result of a STATus ENQuiry/Special intercept announcement: number
unassigned
is cause is included in the Status Message when the reason for sending the Status Message
was previous receipt of a Status Enquiry message.
or
is value indicates that a user from outside a basic business group (i.e. Centrex) has violated an
access restriction feature.
Cause No. 31 - Network disconnect (Normal, unspecified)/Special intercept announcement:
Call blocked because of group restricitons
is cause is used to report a normal event only when no other cause in the normal class applies.
or
is value indicates that a user from outside a basic business group (i.e. Centrex) violated an
access restriction feature
CLASS 1.2 (resource unavailable)
Cause No. 34 - No circuit available (circuit/channel congestion)
is cause indicates that there is no appropriate circuit/channel presently available to handle the
call.
Cause No. 35 – Call Queued [5ESS Custom only]
is indicates the call has been queued.