exten => 700,1,Goto(IVR,s,1) 

[IVR]
exten => s,1,Ringing
exten => s,n,Wait(1)
exten => s,n,Answer
exten => s,n,NoOp(${CALLERIDNUM})
exten => s,n,Set(LANGUAGE()=ru)
exten => s,n,BackGround(vm-call-auto)

exten => _XXXXXXX,1,Wait(1)
exten => _XXXXXXX,n,Dial(SIP/${EXTEN}@sipnet)

exten => _8812XXXXXXX,1,Wait(1)
exten => _8812XXXXXXX,n,Dial(SIP/${EXTEN}@sipnet)

exten => _8495XXXXXXX,1,Wait(1)
exten => _8495XXXXXXX,n,Dial(SIP/${EXTEN}@sipnet)

exten => t,1,HangUp