Q931 Cause Codes

Q931 Cause Codes2018-01-02T21:19:17+01:00

Q931 ist das Protokoll auf dem D-Kanal eines ISDN Anschlusses nach EDSS1 (Europäisches ISDN). Hier finden Sie eine Beschreibung der möglichen Fehlercodes.

Folgende Fehlercodes sind in Q931 beschrieben:

    1    Unallocated (unassigned) number
    6    Channel unacceptable
    16   Normal call clearing
    17   User busy (engaged)
    18   No user responding
    21   Call rejected
    22   Number changed
    26   Non-selected user clearing
    27   Destination out of order
    28   Invalid number format
    29   Facility rejected
    30   Response to STATUS ENQUIRY
    31   Normal, unspecified
    34   No circuit/channel available
    38   Network out of order
    41   Temporary failure
    42   Switching equipment congestion
    43   Access information discarded
    44   Requested circuit/channel not available
    47   Resources unavailable, unspecified
    50   Requested facility not subscribed
    57   Bearer capability not authorized
    58   Bearer capability not presently available
    63   Service or option not available, unspecified
    65   Bearer capability not implemented
    66   Channel type not implemented
    70   Only restricted digital information bearer capability is 
    79   Service or option not implemented, unspecified
    81   Invalid call reference value
    82   Identified channel does not exist
    83   A suspended call exists, but this call identity does not
    84   Call identity in use
    85   No call suspended
    86   Call having the requested call identity has been cleared
    88   Incompatible destination
    91   Invalid transit network selection
    95   Invalid message, unspecified
    96   Mandatory information element is missing
    97   Message type non-existent or not implemented
    98   Message not compatible with call state or message type non-
         existent or not implemented
    99   Information element non-existent or not implemented
    100  Invalid information element contents
    101  Message not compatible with call state
    102  Recovery on timer expiry
    111  Protocol error, unspecified
    127  Interworking, unspecified
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