Can DID and DOSA be programed on the same trunk line?
It is possible to activate both DID/DOSA facility on the same trunk; but you cannot assign flexible number of the extension starting with 1. 8. The Barge-In facility on my extension 21 does not work some times. Barge-in will not work when the destination is in a 3-party conference, or has privacy enabled or is in a dialing or ringer mode.