Problem with call to custom extension from external

1006 - custom app
10 - extension
& voxeo free number

calling to 1006 from voxeo number (sip:1006!sip.domain.com@sbc-staging-internal) one signal & hangup
calling to 10 from voxeo number (sip:10!sip.domain.com@sbc-staging-internal) - works good
calling to 1006 - from 10 works good

log asterisk:
– Executing [[email protected]:1] NoOp(“SIP/sipproxy-out.orl.voxeo.net-b5d0d188”, “Received incoming SIP connection from unknown peer to 1006”) in new stack
– Executing [[email protected]:2] Set(“SIP/sipproxy-out.orl.voxeo.net-b5d0d188”, “DID=1006”) in new stack
– Executing [[email protected]:3] Goto(“SIP/sipproxy-out.orl.voxeo.net-b5d0d188”, “s|1”) in new stack
– Goto (from-sip-external,s,1)
– Executing [[email protected]:1] GotoIf(“SIP/sipproxy-out.orl.voxeo.net-b5d0d188”, “1?from-trunk|1006|1”) in new stack
– Goto (from-trunk,1006,1)