[outgoing]
exten => _1900NXXXXXX,1,Congestion()
exten => _900NXXXXXX,1,Congestion()
exten => _NXXNXXXXXX,1,Dial(SIP/XXXXXXXX*1${EXTEN}@flowroute)
exten => _NXXNXXXXXX,2,Congestion()
exten => _1NXXNXXXXXX,1,Dial(SIP/XXXXXXXX*${EXTEN}@flowroute)
exten => _011NXXXXXXXXX,1,Dial(SIP/XXXXXXXX*${EXTEN}@flowroute)
I got a DID for each person, but if your making outbound calls only you wouldent need em..