User Call Screening and Blocking
From Taridium
Call Screening and Blocking allows you to prevent callers from getting through to your extension if certain conditions are met/or not met.
Call Screening
Call screening will present callers with a prompt asking them to record their name and play it back to you so you can decide whether you want accept or reject the call. If you select only screen if no caller ID is present callers will only be screened if no caller ID is present. This could be an anonymous call, unavailable or other non-numeric caller ID information that cannot be used for call identification.
Call Blocking
Note that call blocking will take precedence over call screening, forwarding, follow me and mailbox services. If call blocking is enabled callers will be presented with a busy tone.