From Zenitel Wiki
|Feature:||Only available on AMC 8.26 and 8.27. Moved to Station flag bit 13. (AlphaPro stations/user programming "Idle DAK during conv. use inquiry")|
|Default directory number:||non|
|Description:||When station in conversation pres a DAK key programmed with "directory number from IDLE" the ongoing conversation is put on hold and a inquiry call is done to the directory number on the DAK key. To cancel ongoing conversation use feature Auto Cancel|
For AMC 8.26 and 8.27 the feature is only for use in COS table , no directory number assigned.