DUNDiLookup( ) Looks up a phone number using DUNDi
DUNDiLookup(number[,context[,options]])
Looks up the given phone number in the context specified, or in the reserved e164 context if not specified. On completion, the variables ${DUNDTECH} and ${DUNDDEST} will contain the appropriate technology and destination to access the number. If no answer was found, and the priority n+101 (where n is the current priority) exists, execution will continue at that priority.
The options argument is currently ignored.
Returns -1 if the channel is hung up during the lookup, or 0 otherwise.
; look up a number via DUNDi, and dial it
exten => 123,1,DUNDiLookup(8885551212)
exten => 123,2,Dial(${DUNDITECH}/${DUNDDEST})
; if DUNDi lookup fails, dial it on a Zap channel instead
exten => 123,102,Dial(Zap/4/1888551212)