[macro-monitor]
exten => s,1,Set(CALLFILENAME=${CALLERID(number)}-${MACRO_EXTEN}-${TIMESTAMP}.wav|b)
exten => s,n,MixMonitor(${CALLFILENAME},b)

[from-dtag]
exten => 13056992700,1,Macro(monitor)
exten => 13056992700,n,Goto(default,1310,1)