Four geographic regions have defined for an IP telephony deployment: Southern Germany, Northern Germany, Austria, and, Hungary. Although voice bandwidth within a region is not constrained, voice bandwidth between regions is constrained. When you configure CallManager, select the most appropriate codec to configure between the Austria region and the other regions.

A.
G.711

B.
G.722

C.
G.726

D.
G.728

E.
G.729

F.
Wideband