[sip-inbound]
exten => 0208XXXXXXX,1,Noop
exten => 0208XXXXXXX,n,Set(OLI=CALLERID(num))
exten => 0208XXXXXXX,n,MixMonitor(/delme/${STRFTIME(,,'%Y/%m/%d')}/${CALLERID(num)}.WAV|b)
exten => 0208XXXXXXX,n,Dial(Zap/G2/2624)