Matrix ETERNITY NE System Manual 653
How it configure
To be able to use Live Call Screening, extension users must have:
• A mailbox assigned to them, in their Voice Mail Settings. 
• Live Call Screening enabled in their “Class of Service (COS)” for the Day and Night time, as required. 
See “Basic Settings” for instructions on configuring the Voice Mail Settings and Class of Service of different 
extension port types: “SLT Extensions”, “DKP Extensions”, “SIP Extensions”.
If required, you may also change the duration of the Live Call Screening Timer. See “System Timers and Counts” 
for instructions.