Cause
The called party number changes to a new number.
Cause value 01 is displayed if the ISDN network does not support Cause value 22.
A BRI or Adjunct Switch Application Interface (ASAI) application generates Cause value 22. Communication Manager does not originate Cause value 22 for PRI.
This cause value has end-to-end significance. Communication Manager returns this cause value to the user who has originated the call.