Which two descriptions of +E.164 and enterprise alternate number for directory numbers in Cisco Unified communications Manager 10.6 are true(choose two)
A. They cannot be advertised as PSTN fail over number
B. They can be added into local partition
C. If the number mask is not configured, the alternate number is invalid
D. They cannot be added into local partition
E. They are not eligible to be advertised using Global Dial Plan Replication
F. If the number mask it is not configured, use DN as alternate number
