Hello
Usually, a VDN is attach too a DID or an extension number use to be dial and then the vector executes the steps program. To try if this VDN is being use as you mention, please perform several calls calling this VDN, but before calling this VDN, on each call, perform a List Trace VDN !!!! to this particular VDN, see if your steps program is getting to it's final destination. After Performing these test 10 calls, then run the command: List VDN !!!! time 00:00 00:00, where 00:00 will be 15 minuts or have hour earlier the test call and the other 00:00 would half or one hour later you have completed all your test. or like 08:00 17:00. Or after you perfome all your calls, run the command List Trace VDN !!!! d 01/28 01/28. the letter d is for day as t for time.
I believe this will give you a good idea.