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Global Call IP Technology Guide — November 2007 579
Dialogic Corporation
IP-Specific Event Cause Codes
IPEC_Q931Cause26NonSelectUserClearing (0xbd2, 3026 decimal)
Q.931 cause 26 - Non-selected user clearing; indicates that the user has not been awarded the
incoming call.
IPEC_Q931Cause27DestinationOutOfOrder (0xbd3, 3027 decimal)
Q.931 cause 27 - Destination out of order; 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 signalling message was unable to be delivered
to the remote party, for example, a physical layer or data link layer failure at the remote party,
or user equipment off-line.
IPEC_Q931Cause28InvalidNumberFormatIncompleteNumber (0xbd4, 3028 decimal)
Q.931 cause 28 - Invalid number format (address incomplete); indicates that the called party
cannot be reached because the called party number is not in a valid format or is not complete.
Note: This condition may be determined immediately after reception of an ST signal or on
time-out after the last received digit.
IPEC_Q931Cause29FacilityRejected (0xbd5, 3029 decimal)
Q.931 cause 29 - Facility rejected; returned when a supplementary service requested by the
user cannot be provided by the network.
IPEC_Q931Cause30ResponseToSTATUSENQUIRY (0xbd6, 3030 decimal)
Q.931 cause 30 - Response to STATUS ENQUIRY; included in the STATUS message when
the reason for generating the STATUS message was the prior receipt of a STATUS ENQUIRY
message.
IPEC_Q931Cause31NormalUnspecified (0xbd7, 3031 decimal)
Q.931 cause 31 - Normal, unspecified; used to report a normal event only when no other cause
in the normal class applies.
IPEC_Q931Cause34NoCircuitChannelAvailable (0xbda, 3034 decimal)
Q.931 cause 34 - No circuit/channel available; indicates that there is no appropriate
circuit/channel presently available to handle the call.
IPEC_Q931Cause38NetworkOutOfOrder (0xbde, 3038 decimal)
Q.931 cause 38 - Network out of order; indicates that the network is not functioning correctly
and that the condition is likely to last a relatively long period of time, that is, immediately re-
attempting the call is not likely to be successful.
IPEC_Q931Cause41TemporaryFailure (0xbe1, 3041 decimal)
Q.931 cause 41 - Temporary failure; indicates that the network is not functioning correctly and
that the condition is not likely to last a long period of time, that is, the user may wish to try
another call attempt almost immediately.
IPEC_Q931Cause42SwitchingEquipmentCongestion (0xbe2, 3042 decimal)
Q.931 cause 42 - Switching equipment congestion; indicates that the switching equipment
generating this cause is experiencing a period of high traffic.
IPEC_Q931Cause43AccessInformationDiscarded (0xbe3, 3043 decimal)
Q.931 cause 43 - Access information discarded; indicates that the network could not deliver
access information to the remote user as requested, that is, user-to-user information, low layer
compatibility, high layer compatibility, or sub-address, as indicated in the diagnostic. The
particular type of access information discarded is optionally included in the diagnostic.