Which two gateway configuration statements are required in order to enable Cisco Unified Communications Manager to control a T1 PRI in an MGCP gateway? (Choose two.)
A. mgcp
B. ccm-manager config
C. pri-group configuration on the controller
D. mgcp call-agent pointing to tftp server
E. isdn 13-backhaul ccm-manager on the serial interface
F. ccm-manager config server {TFTP ip_address}
