Hi I am very new about the freeswitch and just finished setup a new freeswitch and config a test sip account from my voip provider. in the fs_cli, originate sofia/gateway/gw1/xxxxxx(my other number) &echo() I got the phone ring but no echo. originate sofia/user/1000 &echo() works fine. nat_map status shows; freeswitch@internal> nat_map status Nat Type: UNKNOWN, ExtIP: 0 total. freeswitch@internal> sofia status profile internal ================================================================================================= Name internal Domain Name N/A Auto-NAT false DBName sofia_reg_internal Just wonder how to fix the NAT issue on my freeswitch. The router is WRT54GL with Tomato 1.28 on it, which seems support upnp... Thanks a lot Alex