“Locate Number 6300″
If the number is in use, you will get a result to that effect in the “System Response” window. In this example the number 6300 is already allocated to a system speedcall. If the directory number is free, you will get a “number not in use” message.
“LOCATE ALL FREE DN 6300 to 6399″
This will give you alll available directory numbers between 6300 & 6399.
For the user that wants a specific number, you can tell him : “Well, these are the numbers available in the 6300 range.
Please note that this command will not work for any number that starts in the “8XXX” range. (Last number being 7999…)