To trace call flow for each DID's you can do so by doing the following:
1- login to voice.primus.ca/HPBX
2- Change view to advance
3- click on admin setting
4- click on contact directory
5- click on contact DIR.
Here you will see all DID's on your account and where they are attached (Users, Auto-attendant, Hunt groups, etc). From there, once you locate the DID in question, you can then load the appropriate location and start looking how the calls are being redirected for business hours or after hours.
EX: If DID is attached to Auto-Attendant, you would go the following area to investigate: Admin settings > Auto-Attendant > Click view for the DID in question > Business hours Tab or After hours Tab > Can see which option goes where
EX: If DID is attached to a user profile, you would go to the following area to investigate: Users > Check mark the user in question > Manage users > Advance view > Call handling > Call forwarding (this is to show call forward always, no answer, etc) or Call forwarding selective ( forwards calls based on a schedule)
EX: If DID is attached to a Hunt group, you would go to the following area to investigate: Admin settings > Hunt group > click view for the DID in question > No answer settings tab or Forward not reachable settings tab
EX: If DID is attached to a Call center (only if you are paying for one), you would go to the following area to investigate: Call Center Admin > Choose the queue in question > Check call bounce or overflow option