I have some calls that are set to route to a route/hunt group. This then goes to a line group. It successfully rings the extensions in the line group. The problem is if nobody picks up it drops to a fast busy signal. How do I make it finish into a voice mail box?
if your version does not have the option just add the VM ports line group at last of the groups and create a call routing rule in unity for calls coming from that pilot
if this helps, please rate