Error: Call failed: Not Found

I use FreeBPX interface to create extensions 1100 and 1000 then i config for X-Lite with that extensions. After All, i call itself. EX: X-Lite 1000 then call 100 and has error: Call failed: Not Found (That informations are saved in sip_additional.conf and i included it into sip.conf)
else
If i create that info in sip.conf then OK. Please help me.

Name/username Host Dyn Nat ACL Port Status
/ (Unspecified) D 0 Unmonitored
123/123 (Unspecified) D 0 Unmonitored
2006/2006 (Unspecified) D 0 Unmonitored
2008/2008 (Unspecified) D 0 Unmonitored
2009/2009 (Unspecified) D 0 Unmonitored
2002/2002 (Unspecified) D 0 Unmonitored
2001/2001 (Unspecified) D 0 Unmonitored
2000/2000 (Unspecified) D 0 Unmonitored
callwithus/7211 192.168.129.248 5060 Unmonitored
1100/1100 192.168.129.128 D N 20394 OK (57 ms)
1000/1000 192.168.129.4 D N 2074 OK (53 ms)
11 sip peers [Monitored: 2 online, 0 offline Unmonitored: 1 online, 8 offline]