exten => 3799,1,Set(LCR_CAR0=Teliax)
exten => 3799,n,Set(LCR_CAR1=NuFone)
exten => 3799,n,Set(LCR_CAR2=FnordPhone)
exten => 3799,n,Set(LCR_CAR3=NuFone)
exten => 3799,n,Set(MAX_INDEX=3)
exten => 3799,n,Set(INDEX=0)
exten => 3799,n,While($[${INDEX} < ${MAX_INDEX}])
exten => 3799,n,Set(CARRIER=LCR_CAR${INDEX})
exten => 3799,n,Set(CARRIER_NAME=${LCR_CAR${INDEX}})
exten => 3799,n,Noop(INDEX=${INDEX} CARRIER=${CARRIER} CARRIER_NAME=${CARRIER_NAME})
exten => 3799,n,Set(INDEX=$[${INDEX} + 1])
exten => 3799,n,EndWhile
exten => 3799,n,Hangup