Which four statements about the Cisco Voice Messaging portfolio are true? (Choose four)

Which four statements about the Cisco Voice Messaging portfolio are true? (Choose four)

A.
Cisco Unity Express supports redundancy.

B.
Cisco Unity Connection could be installed on a router.

C.
Cisco Unity express could be installed on a Cisco MCS server.

D.
Cisco Unity express offers integrated auto attendant capabilities.

E.
Cisco Unity express supports up to 500 mailboxes.

F.
Cisco Unity connection messaging access is only supported via IP phones and email Clients.

G.
Cisco Unity is offered as an appliance running on Linux.

H.
Cisco Unity connection supports up to 20,000 mailboxes per sever.