ResetCDR( ) Resets the Call Detail Record
ResetCDR([options])
Causes the Call Detail Record to be reset. If the w option is specified, a copy of the current CDR will be stored before the current CDR is zeroed out.
Always returns 0.
; write a copy of the current CDR record, and then reset the CDR
exten => 123,1,Answer( )
exten => 123,2,Playback(tt-monkeys)
exten => 123,3,ResetCDR(w)
exten => 123,4,Playback(tt-monkeys)