Which media resource on a Cisco Unified Border Element and Cisco Unified Communications Manager must the engineer configure to manage the codec negotiation?

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An incoming off-net call to a user fails. An engineer notices that the off-net call is G.711, but the phone accepts only G.729.

Which media resource on a Cisco Unified Border Element and Cisco Unified Communications Manager must the engineer configure to manage the codec negotiation?
A . transcoder
B . CFB
C . MOH
D . MTP

Answer: A