I "thought" I has everything using IP addresses. I am not making "outside" calls this is all internal. I have a connection between two machines both running asterisk. I am using 1.8.3 and I see a lot of dnsmgr_lookup's for "mymachine". I have a register line in sip.conf that is the only place mymachine is referenced. the actual definition for host= is the IP address. the register line is something like: register => jerry_asterisk:password at mymachine I presume the mymachine is causing the dnsmgr_lookup's Can I just replace the @mymachine with the machines IP address? Will this work for 1.8 and 1.4? Thanks, Jerry