Call Admission Control (CAC) cannot be applied in all cases, for example, a call placed on hold can always be retrieved. The following list identifies features that will always be allowed to connect.
Add Held
Call Park - Original Attendant Hold
Call Waiting Swap
Call Park
Call Pickup
Call Pickup - Clustered
Campon - Call Waiting
DSS/BLF
Emergency Services
Group Page
Hold Retrieve (Hard Hold, Hold on Hold)
MLPP
Non-Busy Station
Override
Record-a-Call
Stack Hold
TAFAS
Transfer
Wakeup Calls