ISDN Cause Values
Decimal Hexadecimal Cause Explanation
30 1E Response to STATUS ENQUIRY The status message was generated
in direct response to the prior receipt
of a status enquiry message.
31 1F Normal, unspecified Reports the occurrence of a normal
event when no standard cause
applies. No action required.
34 22 No circuit/channel available The connection cannot be established
because no appropriate
channel is available to take the call.