enum MtasFcdVersionDT

Numeric Enumeration:0-2 (0=LEGACY, 1=WAIT_SENDING_ACK, 2=BUSYEVERYWHERE_ENDUSER)

`0`	`LEGACY` Legacy version.
`1`	`WAIT_SENDING_ACK` ACK to called party at answer sent when receiving ACK from caller.
`2`	`BUSYEVERYWHERE_ENDUSER` Busy Everywhere triggered when end users do reject.